TWI345069B - System and/or method for reducing ambiguities in received sps signals - Google Patents

Description

1345069 九、發明說明： 【發明所屬之技術領域】 本文中所揭示之標的物係關於基於自地理位置衛星所接 收之信號來判定一位置。 【先前技術】 衛星定位系統（SPS)通常包含使得實體能夠至少部分基 於自衛星所接收的信號判定其在地球上之位置的地球軌道 衛星系統。此SPS衛星通常發射一以若干碼片之重複偽隨 機雜訊（PN)碼加以標記的信號。舉例而言，諸如GPS或伽 利略（Galileo)之全球導航衛星系統（Global Navigation Satellite System，GNSS)之集群中的衛星可發射一以一可與 由集群中之其他衛星所發射之PN碼相區別的pn碼加以標 記的信號。 為估計接收器處之位置，導航系統可使用熟知技術至少 部分基於對自衛星所接收的信號中之PN碼的伯測來判定至 接收器"看得見"之衛星的偽距量測值。可至少部分基於在 接收器處獲得已接收信號之過程期間以與衛星相關聯的pN 碼加以標記之已接收信號中偵測到的碼相位來判定至衛星 之此偽距。為獲得已接收信號，導航系統通常使已接收信 號與本地產生之與衛星相關聯的PN碼相關。舉例而言，此 導航系統通常使此已接收信號與此本地產生之PN碼的多個 碼及/或時間偏移版本相關。對產生具有最高信號功率之 相關結果的特定時間及/或碼偏移版本的偵測可指示與用 於量測如上文所論述之偽距的所獲得信號相關聯的碼相 123967.1000321 .doc 一偵測到自GNSS衛星所接收的信號之碼相位，接吹器 便可形成多個偽距假設。使用額外資訊，接收器可消除此 等偽距假設以有效減少與真實偽距量測值相關聯的模糊 性。除了以週期性重複之PN碼序列進行編碼之外，由 GNSS衛星發射之信號亦可由諸如資料信號及/或已知序列 值之額外資訊來調變。藉由偵測自GNSS衛星所接收之信 號中的此額外資訊’接收器可消除與已接收信號相關聯的 偽距假設。 圖1A說明S P S系統之應用’藉此無線通信系統中之用戶 台100接收來自用戶台100視線中之衛星1〇2a、102b、 102c、102d的發射，且自四個或四個以上發射得到時間量 測值。用戶台10 0可將此等量測值提供至位置判定實體 (PDE)l 04 ’其自該等量測值來判定該用戶台之位置。或 者’用戶台100可自此資訊判定其自身位置。 用戶台1 00可藉由使衛星之PN碼與已接收信號相關來搜 尋來自特定衛星的發射《已接收信號通常包含在存在雜訊 情況下來自用戶台100處之接收器視線中之一或多個衛星 的發射之複合。可在已知為碼相位搜尋窗之碼相位假 没的範圍内及已知為多普勒（D0ppler)搜尋窗"之多普 勒頻率假设的範圍内執行一相關。如上文所指出，通常將 此等碼相位假設表示為PN碼偏移之範圍。同樣，通常將多 普勒頻率假設表示為多普勒頻率倉（frequency bin) ^ 通常在一可表不為队與河之乘積的積分時間"丨"内執行相 123967-100032l.doc 1345069 關，其中Nc為相干積分時間，且袼為未經相干組合之相干 積分之數目。對於—特碼，相關值通常與相應pN碼 偏移及多普勒倉（Doppler bin)相關聯以界定二維相關函 數。定位相關函數之峰值並將該峰值與一預定雜訊臨限值 比較。該臨限值通常經選擇以使得錯誤警報概率、錯誤傾 測衛星發射之概率處於一預定值或在該預定值之下。通常 自等於或大於臨限值的沿碼相位維度之最早非旁辦峰值的1345069 IX. INSTRUCTIONS: TECHNICAL FIELD OF THE INVENTION The subject matter disclosed herein relates to determining a location based on signals received from geostationary satellites. [Prior Art] A satellite positioning system (SPS) typically includes an earth orbit satellite system that enables an entity to determine its position on the earth based, at least in part, on signals received from the satellite. The SPS satellite typically transmits a signal that is marked with a repeating pseudo random noise (PN) code of a number of chips. For example, a satellite in a cluster such as GPS or Galileo's Global Navigation Satellite System (GNSS) can transmit a PN code that is distinguishable from other satellites in the cluster. The signal marked by the pn code. To estimate the location at the receiver, the navigation system can determine the pseudorange measurement to the receiver "visible" satellite using at least in part based on a beta test of the PN code in the signal received from the satellite using well known techniques. value. The pseudorange to the satellite can be determined based at least in part on the code phase detected in the received signal marked with the pN code associated with the satellite during the process of obtaining the received signal at the receiver. To obtain the received signal, the navigation system typically correlates the received signal with a locally generated PN code associated with the satellite. For example, the navigation system typically correlates the received signal with a plurality of code and/or time offset versions of the locally generated PN code. The detection of a particular time and/or code offset version that produces a correlation result with the highest signal power may indicate a code phase associated with the acquired signal used to measure the pseudorange as discussed above. 123967.1000321 .doc By detecting the code phase of the signal received from the GNSS satellite, the blower can form multiple pseudorange hypotheses. Using additional information, the receiver can eliminate these pseudorange assumptions to effectively reduce the ambiguity associated with true pseudorange measurements. In addition to encoding with periodically repeated PN code sequences, signals transmitted by GNSS satellites may also be modulated by additional information such as data signals and/or known sequence values. By detecting this additional information in the signal received from the GNSS satellite, the receiver can eliminate the pseudorange hypothesis associated with the received signal. Figure 1A illustrates the application of the SPS system 'by means that the subscriber station 100 in the wireless communication system receives transmissions from the satellites 1〇2a, 102b, 102c, 102d in the line of sight of the subscriber station 100, and derives time from four or more transmissions Measurement value. Subscriber station 10 may provide such measurements to a location decision entity (PDE) 104' from which the location of the subscriber station is determined. Or the 'user station 100' can determine its own location from this information. Subscriber station 100 can search for transmissions from a particular satellite by correlating the satellite's PN code with the received signal. "The received signal is typically contained in one or more of the receiver's line of sight from subscriber station 100 in the presence of noise. The composite of satellite launches. A correlation can be performed within a range known as the code phase of the code phase search window and within the range of the Doppler frequency hypothesis known as the Doppler search window. As noted above, these code phase hypotheses are typically expressed as a range of PN code offsets. Similarly, the Doppler frequency hypothesis is usually expressed as a Doppler frequency bin ^ (usually in the integral time of the product that can be expressed as the product of the team and the river " 丨 " execution phase 123967-100032l.doc 1345069 Off, where Nc is the coherent integration time and 袼 is the number of coherent integrations that are not coherent. For a special code, the correlation value is usually associated with the corresponding pN code offset and Doppler bin to define a two-dimensional correlation function. The peak of the correlation function is located and compared to a predetermined noise threshold. The threshold is typically selected such that the probability of false alarms, the probability of falsely tilting satellite transmissions is at or below a predetermined value. Usually the earliest non-side-side peak of the code-phase dimension equal to or greater than the threshold

位置得到衛星之時間量測值。可自等於或大於臨限值的沿 夕曰勒頻率維度之最早非旁瓣峰值的位置得制戶台之多 普勒量測值。 ° 解決與所獲得之GNSS信號相關聯的偽距假設之模糊性 消耗功率及處理資源。功率及處理資源之此消耗通常為諸 如灯動電話及其他設備之攜帶型羞品的關鍵設計約束條 【發明内容】The location gets the time measurement of the satellite. The Doppler measurement of the household can be obtained from the position of the earliest non-sidelobe peak of the frequency range of the 曰 曰 等于 等于. ° Solve the ambiguity of the pseudorange hypothesis associated with the obtained GNSS signal. Power consumption and processing resources. The consumption of power and processing resources is usually a key design constraint for portable shame such as a light telephone and other devices. [Summary of the Invention]

SV 在一態樣中，以一資料信號調變在接收器處自第 所接收的第-SPS信號。在本文中所說明之—特定㈣ 中’系統及方法係針對至少部分基於在接收器處接收的第 二奶信號中之資訊而減少資料信號中位元邊沿⑽edge、 之模糊性。然而’應理解’此僅為根據本文中所說明之特 定實例的一特定特微，B % + 斤主張之私的物不限於此態樣。 【實施方式】 貫穿本說明書提及&quot;一實例&quot; 及/或貫例所描述的特定特徵、 一特徵&quot;意謂結合該特徵 結構或特性包括於所主張 123967-1000321.doc 1345069 ==少一特徵及/或實例中。因此，貫穿本說明書 :，各處所出現之短語”在一實例中&quot;、”一實例.·、”在一特徵 β或:特徵”未必全部指代相同特徵及/或實例。此外， =特定特徵、結構或特性組合於—或多個實例及/或特 本：中所描述之方法可根據特定特徵及/或實例而視應 以：方式來實施。舉例而言’此等方法可實施於硬 體，體、軟體及/或其組合中。舉例而t，在硬體實施 例中，-處理單元可實施於一或多個特殊應用積體電路 (ASK：)、數位信號處理器（Dsp)、數位信號處理設備 (DSPD)'可程式化邏輯設備(pLD)、場可程式化閘陣列 (FPGA)、處理器、控制器、微控制器、微處理器、電子設 備i »又D十以執行本文中所描述之功能的其他設備單元及/ 或其組合中。 於本文中所提及的&quot;指令&quot;與表示一或多個邏輯操作之表 達式有關。舉例而言’指令可為可由一機器解譯以對一或 多個資料物件執行一或多個操作的&quot;機器可讀指令&quot;、然 而’此僅為指令之一實例，且所主張之標的物不限於此態 樣。在另一實例中，本文中所提及之指令可與可由一具有 包括經編碼命令之命令集合的處理電路執行的經編瑪命令 有關。此指令可以由處理電路理解的機器語言之形式來編 碼又，此等僅為指令之實例，且所主張之標的物不限於 此態樣。 於本文中所提及之，，儲存媒體&quot;與能夠維護可由一或多個 123967-1000321.doc 理解的表達式之媒體有關。舉例而言，一儲存媒體可 ^用於儲存機器可讀指令及/或資訊之—或多個儲存設 與。此等儲存設備可包含若干媒體類型（包括（例如）磁、光 :或半導體儲存媒體)中之任-者。此等儲存設備亦可包 :任何類型的長期、短期、揮發性或非揮發性記憶體設 '然而’此等僅為儲存媒體之實例’且所主張之標的物 不限於此等態樣。 除非另有特別陳述，否則如自以下論述將顯而易見的， 應瞭解貫穿本說明書之論述使用諸如&quot;處理·，、&quot;計算選 擇&quot;、&quot;形成&quot;、”賦能&quot;、&quot;抑制&quot;、&quot;定位&quot;、&quot;終止,.、；別广 起始”、，W貞測&quot; ' ”獲取&quot;、&quot;代管&quot;、”维護&quot;、&quot;表示&quot;、&quot;估 計”、&quot;減少”、，，相關聯”、”接收，，、”發射，，、，，判定，，及/或其 =術語之術語來指代可由一計算平台（諸如電腦或類似 好計算㈣）執行的㈣及/或處理，料算平纟操縱及/ 變換計算平台之處理器、記憶體、暫存器及/或其他資 訊儲存、發射、接收及/或顯示設備中表示為物理電子量 及/或磁量及/或其他物理量的資料。此等動作及/或處理可 在儲存於（例如）儲存媒體中的機器可讀指令之控制下由計 算平台來執行。此等機器可讀指令可包含(例如)儲存於包 括為什异平台之一部分（例如，包括為處理電路之一部分 或在此處理電路之外部）的儲存媒體中之軟體或勃體。此 外’除非另有特別陳述’否則本文中參考流程圖或其他内 谷所描述之㈣亦可全㈣部分地由此計算平台執行及/ 或控制。 123967-1000321.doc 於本文中所提及之”太空航行器（SV)”與一能夠發射信號 至地球表面上之接收器的物件有關。在一特定實例中，此 SV可包含一地球同步衛星。或者，SV可包含一在軌道上 行進並相對於地球上之固定位置移動的衛星。然而，此等 僅為SV之實例，且所主張之標的物不限於此等態樣。 於本文中所提及之''位置&quot;與相關聯於物件或事物（thing) 根據參考點之行蹤的資訊有關。此處，舉例而言，此位置 可表示為諸如緯度及經度之地理座標。在另一實例中，此 位置可表示為地心XYZ座標。在又一實例中，此位置可表 示為街道地址、市區或其他政府管轄區域、郵政編碼及/ 或其類似物。然而，此等僅為可根據特定實例表示位置之 方式的實例，且所主張之標的物不限於此等態樣。 本文中描述之位置判定及/或估計技術可用於諸如無線 廣域網路（WWAN)、無線區域網路（WLAN)、無線個人區 域網路（WPAN)等之各種無線通信網路。術語&quot;網路&quot;及&quot;系 統''在本文中可互換使用。WWAN可為一分碼多重存取 (CDMA)網路、分時多重存取（TDMA)網路、分頻多重存取 (FDMA)網路、正交分頻多重存取（OFDMA)網路、單載波 分頻多重存取（SC-FDMA)網路等。CDMA網路可實施諸如 cdma2000、寬頻CDMA (W-CDMA)(僅舉幾個無線電技術 之例子）之一或多種無線電存取技術（RAT)。此處， cdma2000可包括根據IS-95、IS-2000及IS-856標準實施的 技術。TDMA網路可實施全球行動通信系統（GSM)、數位 高級行動電話系統（D-AMPS)或某一其他RAT。來自稱為&quot;第 123967-1000321.doc 1345069 3代合作夥伴計劃&quot;（3GPP)的協會之文獻中描述了 GSM及 W-CDMA。來自稱為&quot;第3代合作夥伴計劃2”（3GPP2)的協 會之文獻中描述了 cdma2000。3GPP及3GPP2文獻可公開得 到。舉例而言，WLAN可包含IEEE 802.1 lx網路，且WPAN 可包含一藍牙網路、IEEE 802.15x。本文中描述之此位置 判定技術亦可用於WWAN、WLAN及/或WPAN之任何組 合。 根據一實例，一設備及/或系統可至少部分基於自SV所 接收之信號來估計其位置。詳言之，此設備及/或系統可 獲取包含相關聯SV與導航衛星接收器之間的距離之近似值 的&quot;偽距”量測值。在一特定實例中，可在能夠處理來自作 為衛星定位系統（SPS)之部分的一或多個SV之信號的接收 器處判定此偽距。此SPS可包含（例如）全球定位系統 (GPS)、伽利略、全球導航衛星系統（Glonass)(僅舉幾個例 子）或未來開發的任何SPS。為判定其位置，衛星導航接收 器可獲取至三個或三個以上衛星之偽距量測值以及其在發 射時之位置。知曉SV之軌道參數，可對於任何時間點計算 此等位置。接著可至少部分基於信號自SV行進至接收器的 時間乘以光速來判定偽距量測值。雖然本文中所描述之技 術可提供為根據特定實例之特定說明的GPS及/或伽利略類 型之SPS中的位置判定之實施例，但應理解，此等技術亦 可應用於其他類型的SPS，且所主張之標的物不限於此態 樣。 本文中描述之技術可（例如）與若干SPS(包括前述SPS)中 123967-1000321.doc -12- 1345069 之任-者-起使用。此外，此等技術可與使用偽衛星或衛 星與偽衛星之組合的定位判定系統一起使用。偽衛星可包 含廣播在L頻帶（或其他頻率）載波信號上調變的pN碼或其 他測距碼（例如，類似於GPS或CDMA蜂巢式信號）的陸基 發射器，其可與GPS時間同步。可向此發射器指派一唯一 的PN碼，以准許由遠端接收器識別。偽衛星可用於來自軌 道衛星之GPS信號可能不可用的情形，諸如在隧道、礦 井、建築物、城市峽谷或其他封閉區域中。偽衛星之另一 貫施例稱為無線電信標。於本文中使用之術語&quot;衛星&quot;意欲 包括偽衛星、偽衛星之等效物及其他可能之物。於本文中 使用之術語”SPS信號&quot;意欲包括來自偽衛星或偽衛星之等 效物的類似SPS之信號^ 於本文中提及之&quot;全球導航衛星系統&quot;（Global Navigation Satellite System，GNSS)與包含發射根據共同傳信格式之同 步導航信號之SV的SPS有關。此GNSS可包含（例如）同步軌 道中之SV之集群’集群&gt; 之多個SV同時發射導航信號至 大部分地球表面上的位置。一為特定GNSS集群之成員的 SV通常以特定GNSS格式所獨有的格式發射導航信號。因 此，用於獲得由第一 GNSS中之SV發射的導航信號之技術 可經改變以用於獲得由第二GNSS中之SV發射的導航信 號。在一特定實例中（儘管所主張之標的物不限於此態 樣）’應理解，GPS、伽利略及Glonass各自表示一不同於 其他兩個名稱為SPS之GNSS。然而，此等僅為與不同 GNSS相關聯的SPS之實例，且所主張之標的物不限於此態 123967-1000321.doc •13· 1345069 樣。 /據一特徵…導航接收器可至少部分基於自特定sv 獲得以週期性重複之PN碼序列編碼的信號而獲取一至特定 SV之偽距量測值。此信號之獲得可包含制―涉及時間及 在PN碼序列中之相關聯點的”碼相位&quot;。舉例而言，在一 特定特徵中，此碼相位可能涉及一本地產生之時脈信號及 PN碼序财之—特定碼片。然而，此僅為表示碼相位之方 式之一實例，且所主張之標的物不限於此態樣。 根據一實例’碼相位之偵測可在PN碼間隔處提供若干 模糊候選偽距或偽距假設。因此，導航接收器可至少部分 基於所偵測之碼相位及選擇該等偽距假設中之一者作為一 至SV之真實偽距菫測值的模糊性之解決方法而獲取—至 SV之偽距量測值。如上文所指出，導航接收器可至少部分 基於自多個SV所獲取之偽距量測值來估計其位置。 根據一實例（儘管所主張之標的物不限於此態樣），自sv 所發射之信號可在預定週期内及按預定序列而以一或多個 資料信號來調變。在GPS信號格式中，例如，SV可發射以 一以毫秒間隔重複的已知PN碼序列編碼的信號。另外，舉 例而言，此信號可以一可在預定之2 0毫秒間隔内改變的資 料信號來調變。根據一特定實例（儘管所主張之標的物不 限於此態樣），此資料信號及重複之PN碼序列可在以無综^ 電頻率載波信號混合以自SV發射之前以模2和運算加以組 合0 圖1B為一說明根據一實例之疊加於在一參考位置處自 123967-1000321.doc •14· 1345069 GPS集群中之SV所接收的信號中之資料信號154上的偽距 假設152之時序圖。此處，資料信號.154中之位元間隔可為 20 ms長且在20個偽距假設152上延伸，該等偽距假設152 係至少部分基於對重複之丨·〇 ms PN碼序列中的碼相位之 偵測而判定》藉由在20毫秒位元間隔内選擇偽距假設i 56 中之一者’接收器可判定20 ms資料位元間隔之間的邊界 或劃分資料信號1 54中之連續位元的&quot;位元邊沿&quot;。 根據一實例（儘管所主張之標的物不限於此態樣），接收 器可至少部分基於自另一 SV接收之信號來偵測調變一自一 SV接收之信號的資料信號中之位元邊沿及/或位元間隔之 間的邊界。此處，第一信號之偽距假設可與第二信號之偽 距假設相關聯。至少部分基於第一信號之偽距假設與第二 k號之偽距假設之間的此關聯’接收器可解決調變信號中 之位元邊沿相對於真實偽距的對準及/或相位的模糊性。 然而，此僅為一實例’且所主張之標的物不限於此態樣。 圖2展示根據一實例之能夠藉由量測至sV的偽距而判定 接收器處之位置的系統之示意圖。地球表面168上之一參 考位置中心166處的接收器可觀察並接收來自svi及SV2之 k號。可知曉參考位置中心166在由（例如）半徑為約1〇 km 之圓所界定之參考位置區域164内。然而，應理解，此僅 為可如何根據一特定態樣表示所估計之位置的不確定度之 一實例，且所主張之標的物不限於此態樣。在一實例中， 區域164可包含在一已知位置處的蜂巢式無線通信網路之 特定單元之覆蓋區域。 123967-100Q32l.doc -15- 1345069 根據一實例，在參考位置區域164處之接收器可經由（例 如）一衛星通信網路或陸上無線通信網路中的無線通信鏈 路與諸如伺服器（未圖示）之其他設備通信。在一特定實例 中’此伺服器可發射獲得輔助（AA)訊息至接收器，該等獲 得輔助（AA)訊息包含由接收器用以處理自sv所接收之信 號及/或獲取偽距量測值的資訊。或者，可自本地儲存於 接收器之記憶體中的資訊提供此等AA訊息。此處，可將 $ 此本地健存之資訊自一可移式記憶體設備儲存至本地記憶 體及/或自先前自一伺服器所接收之AA訊息得到本地儲存鲁 之資訊（僅舉幾個實例卜在一特定實例中’ AA訊息可包含 諸如指示SV1及SV2之位置、參考位置中心166之位置的估 计、與所估計之位置相關聯之不確定度、當前時間之估計 及/或其類似物的資訊之資訊。指示Svi及SV2之位置的此 等資訊可包含星曆資訊及/或年曆資訊。如下文根據特定 實例所指出，接收器可至少部分基於此星曆及/或年曆及 φ 對時間的粗略估計來估計SV1及SV2之位置。SV之此估計 位置可包含（例如）一相對於參考方向的經估計之方位角及鲁 一相對於參考位置中心166處的地球地平線之仰角及/或地 心XYZ座標。 根據一實例’ SV1與SV2可為相同或不同GNSS，群之成 員在下文所說明之特定實例中，SV1可為GPS集群之成 員而SV2可為伽利略集群之成員。然而，應理解，此僅 為接收器可如何接收來自屬於不同GNSS集群之SV之信號 的實例，且所主張之標的物不限於此態樣。 123967-I000321.doc -16- S) 1345069 圖3為根據一實例之用於減少自sv所接收之信號的模糊 I1生的過私200之—流程圖。此處，在參考位置區域處之接 收器可自第一 SV(例如，SV1)接收一以一第一週期性重複 之PN碼加以編碼的第一信號，並自第二sv(例如，SV2)接 收一以一第二週期性重複之PN碼加以編碼的第二信號。為 在步驟202處獲得第一信號，此接收器可偵測已接收信號 之多普勒頻率及碼相位。對碼相位之此偵測可包含（例如） 本地產生碼序列之碼及/或時間偏移版本與如下文所說明 之已接收之第一信號的相關性。舉例而言，在一自一伽利 略SV發射已接收信號的實例中，可在PN碼序列之4.0 ms重 複週期内偵測此碼相位。或者，當自GPS SV發射已接收 信號時，可在PN碼序列之1〇啦重複週期内偵測此碼相 位°然而’此僅為可如何獲得來自特定GNSSisv之信號 的一實例’且所主張之標的物不限於此態樣。 在一特定替代方案中’第一及第二SV可來自gps集群， 而兩個SV中之至少一者能夠發射lic信號。如同來自伽利 略SV之‘航仏號’ L1C導航信號可包含以4.0 ms週期重複 之PN碼序列加以編碼的信號。因此，應理解，雖然本文中 所論述之特定實例可與來自伽利略及GPS集群之SV的使用 有關，但此等技術亦可應用於使用sv中之至少一者能夠發 射L1C信號的兩個GPS sv之其他實例。又，此等僅為可在 處於參考位置區域之接收器處自SPS接收的特定信號之實 例’且所主張之標的物不限於此態樣。 步驟204可使用上文結合步驟2〇2所論述之技術獲得自第 123967-1000321.doc •17· 1345069 二sv接收的第二信號。然而，應理解，可根據不同於用於 發射第一信號之GNSS格式的GNSS格式發射已接收之第二 信號。此處，例如，可自在GPS集群中之SV發射第一已接 收信號’而可自在伽利略集群中之SV發射第二已接收信 號。或者’可自在伽利略集群中之SV發射第一已接收信 號’而可自GPS集群發射第二已接收信號。然而，應理 解’此等僅為接收器可如何接收來自屬於不同GNS S集群 的SV之信號的實例，且所主張之標的物不限於此態樣。 一獲得來自SV之信號（例如，如上文參考步驟202及204 · 所說明）’接收器便可自碼相位偵測來判定偽距假設。舉 例而言，在SV根據GPS格式發射一信號的特定實例中，接 收器可至少部为基於在接收器處獲得的信號中所偵測的週 期性重複之PN碼序列的相位而以1 〇 ms間隔及/或以約3.0 X 105米之增量來判定偽距假設。舉例而言，在Sv根據伽 利略格式發射號的另一實例中，可至少部分基於在接收 器處獲得的信號中所偵測的週期性重複之PN碼序列的相位 而以4.0 ms間隔及/或以约1 ·2χ 1 〇6米之增量來判定偽距假 · 設。在偵測由SV發射之信號之ρν碼序列的相位的過程 中’接收器可使用（例如）在一 ΑΑ訊息中提供至接收器的資 訊。然而，此僅為接收器可如何 貞測自發射的信號之週 期ΡΝ碼序列之相位的實例，且所主張之標的物不限於此態 樣。 根據一實例’步驟2〇6可使自第一 S V (S V1)所接收之信 號的偽距假設與自第二SV (SV2)所接收之信號的偽距假設 123967-1000321.doc 1345069 相關聯。如圖4中根據一特定實例所說明，至少部分基於 在自參考位置中心至第一 SV之距離與自參考位置中心至第 一 sv之距離之間的估計差而使在參考位置區域處自 群中之第一 SV所接收的信號之偽距假設254與在參考位置 區域處自伽利略集群令的第二sv所接收之信號的偽距假設 相關聯。此處，應觀察到，自參考位置至第一 sv之距 離可不同於自參考位置至第二sv之距離。在一特定實例 中’ AA訊息中提供至接收器（例如，在參考位置區域丨 處）之資訊可用於估計自參考位置中心至第一 8乂之距離與 鲁 自參考位置中心至第二8¥之距離的此差。 實際差1可界定自參考位置至第一 sv之距離與自參考位 置至第二SV之距離之間的差（例如，以時間單位計）。此 處’將實際差L表達如下： 1 其中： T!=在參考位置處在給定時間所量測的來自§¥1之信號的 鲁 傳播延遲；且 丁2=在參考位置處在相同給定時間所量測的來自SV2之信 號的傳播延遲。 因此’為使偽距假設254與偽距假設256相關聯，接收器 可根據如下關係（i)判定自參考位置中心至第一 sv之距離 與自參考位置中心至第二SV之距離之間的差ζ(例如，以時 間單位計）之估計： 123967-1000321 .doc -19- 1345069 E[L]=E[T2-T!] ⑴ 因為可將與丁2及Τι相關聯之誤差假定為大體獨立，所以 表達式Ε[Τ2·Τ1]可與表達式ΕΡ+ΕΙ：!^]近似《此處，在一 特定實例中，對於特定時間的表達式Ε[Τ2]_Ε[Τι]之值可藉 由ΑΑ訊息而使一接收器知曉及/或可用於一接收器。或 者’一接收器可自在此ΑΑ訊息中所接收之資訊得到對於 特定時間之表達式EtTd-EI；!^]值。 可將差Z之估計E[Z](根據關係（1)應用於相關聯之偽距假 鲁 叹254及25 6)簡化為一如下所述消除接收器時脈誤差τ的表 達式： E[Z] = E[T2]-E[T,] =(RsV2/c-t)-(RSVj/c-t) —(RsV2_Rsvl )/c 其中： C=光速； τ=接收器時脈偏移誤差；In one aspect, the SV modulates the first-SPS signal received from the receiver at the receiver with a data signal. The system-specific method described herein - in particular (4) reduces the ambiguity of the bit edge (10) edge in the data signal based at least in part on the information in the second milk signal received at the receiver. However, it should be understood that this is only a specific feature according to the specific examples described herein, and that the private content claimed by B% + jin is not limited to this aspect. [Embodiment] Throughout the specification, reference to &quot;an example&quot; and/or the specific features, a feature &quot; described in the <RTI ID=0.0> </ RTI> </ RTI> <RTI ID=0.0> </ RTI> </ RTI> </ RTI> </ RTI> Less than one feature and / or instance. Thus, throughout the specification, the phrase "a" or "an" or "an" or "an" In addition, the specific method, structure, or combination of features in the <RTI ID=0.0>> </ RTI> </ RTI> <RTI ID=0.0> </ RTI> </ RTI> </ RTI> <RTIgt; For example, such methods can be implemented in hardware, body, software, and/or combinations thereof. For example, in a hardware embodiment, the processing unit can be implemented in one or more special application integrated circuits (ASK:), digital signal processor (Dsp), digital signal processing device (DSPD). Logic devices (pLDs), field programmable gate arrays (FPGAs), processors, controllers, microcontrollers, microprocessors, electronic devices, and other device units that perform the functions described herein / or a combination thereof. The &quot;instructions&quot; referred to herein are related to expressions that represent one or more logical operations. For example, an 'instruction can be a machine readable instruction&quot; that can be interpreted by a machine to perform one or more operations on one or more data objects, however 'this is merely one example of an instruction, and is claimed The subject matter is not limited to this aspect. In another example, the instructions referred to herein may be associated with a naming command that may be executed by a processing circuit having a set of commands including encoded commands. This instruction may be encoded in the form of a machine language understood by the processing circuit, and these are merely examples of instructions, and the claimed subject matter is not limited in this respect. As referred to herein, the storage medium &quot; is associated with media capable of maintaining expressions that can be understood by one or more of 123967-1000321.doc. For example, a storage medium can be used to store machine readable instructions and/or information - or multiple storage devices. Such storage devices may include any of a number of media types including, for example, magnetic, optical: or semiconductor storage media. Such storage devices may also include: any type of long-term, short-term, volatile or non-volatile memory device 'however' these are merely examples of storage media' and the subject matter claimed is not limited to such aspects. Unless otherwise stated, as will be apparent from the following discussion, it should be understood that the discussion throughout this specification uses such &quot;process&quot;, &quot;calculation selection&quot;, &quot;formation&quot;,&quot;energy&quot;,&quot ; suppression &quot;, &quot;location&quot;, &quot;terminate,.,; don't start wide,", "when" &quot; ' " get &quot;, &quot;hosting&quot;, "maintenance&quot;, &quot ; means &quot;, &quot;estimate,&quot;reduce,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, (4) and/or processing performed by a platform (such as a computer or similar computing (4)), which is intended to store, transmit, receive, and/or processor, memory, scratchpad, and/or other information on the computing and/or computing platform. Or information in the display device expressed as physical electronic quantities and/or magnetic quantities and/or other physical quantities. Such actions and/or processes may be performed by a computing platform under the control of machine readable instructions stored in, for example, a storage medium. To execute. These machine readable instructions can include (eg) stored in a storage medium including a portion of a platform (eg, included as part of a processing circuit or external to the processing circuitry). In addition, 'unless otherwise specifically stated' otherwise The reference flow chart or other internal valley descriptions (4) may also be partially (4) partially executed and/or controlled by this computing platform. 123967-1000321.doc As mentioned in this article, "Space Vehicle (SV)" and The transmitting signal is related to an object of the receiver on the surface of the earth. In a particular example, the SV may comprise a geosynchronous satellite. Alternatively, the SV may comprise a satellite that travels in orbit and moves relative to a fixed position on the earth. However, these are merely examples of SVs, and the claimed subject matter is not limited to such aspects. The ''location' as referred to herein is associated with an object or thing (thing) according to the reference point. For information, here, for example, this location can be represented as a geographic coordinate such as latitude and longitude. In another example, this location can be represented as a geocentric XYZ coordinate. In yet another example This location may be expressed as a street address, an urban or other government jurisdiction, a postal code, and/or the like. However, these are merely examples of ways in which a location may be represented by a particular instance, and the claimed subject matter is not Limited to this aspect. The location determination and/or estimation techniques described herein can be used in various wireless communication networks such as wireless wide area networks (WWANs), wireless local area networks (WLANs), wireless personal area networks (WPANs), and the like. The terms &quot;network&quot; and &quot;system&quot; are used interchangeably herein. The WWAN can be a code division multiple access (CDMA) network, a time division multiple access (TDMA) network, a frequency division multiple access (FDMA) network, an orthogonal frequency division multiple access (OFDMA) network, Single carrier frequency division multiple access (SC-FDMA) network, etc. A CDMA network may implement one or more radio access technologies (RATs) such as cdma2000, Wideband CDMA (W-CDMA), to name a few radio technologies. Here, cdma2000 may include technologies implemented in accordance with the IS-95, IS-2000, and IS-856 standards. The TDMA network can implement the Global System for Mobile Communications (GSM), the Digital Advanced Mobile Phone System (D-AMPS), or some other RAT. GSM and W-CDMA are described in documents from an association called &quot;123967-1000321.doc 1345069 3 Generation Partnership Project&quot; (3GPP). Cdma2000 is described in documents from an association called &quot;3rd Generation Partnership Project 2&quot; (3GPP2). The 3GPP and 3GPP2 documents are publicly available. For example, a WLAN may include an IEEE 802.1 lx network, and the WPAN may include A Bluetooth network, IEEE 802.15x. The location determination technique described herein can also be used for any combination of WWAN, WLAN, and/or WPAN. According to an example, a device and/or system can be based, at least in part, on receiving from a SV. The signal is used to estimate its position. In particular, the device and/or system can obtain a &quot;pseudorange&quot; measurement that includes an approximation of the distance between the associated SV and the navigation satellite receiver. In a particular example, this pseudorange can be determined at a receiver capable of processing signals from one or more SVs that are part of a satellite positioning system (SPS). This SPS may include, for example, the Global Positioning System (GPS), Galileo, Global Navigation Satellite System (Glonass) (to name a few) or any SPS developed in the future. To determine its position, the satellite navigation receiver can acquire pseudorange measurements to three or more satellites and their position at the time of transmission. Knowing the orbital parameters of the SV, these locations can be calculated for any point in time. The pseudorange measurement can then be determined based at least in part on the time the signal travels from the SV to the receiver multiplied by the speed of light. Although the techniques described herein may be provided as an embodiment of position determination in a GPS and/or Galileo type SPS according to a particular description of a particular example, it should be understood that such techniques may also be applied to other types of SPS, and The subject matter claimed is not limited to this aspect. The techniques described herein can be used, for example, with any of a number of SPSs (including the aforementioned SPS) of 123967-1000321.doc -12- 1345069. Moreover, such techniques can be used with positioning determination systems that use pseudolites or a combination of satellites and pseudolites. The pseudolite may comprise a land based transmitter that broadcasts a pN code or other ranging code (e.g., similar to a GPS or CDMA cellular signal) modulated on an L-band (or other frequency) carrier signal, which may be time synchronized with the GPS. This transmitter can be assigned a unique PN code to permit identification by the remote receiver. Pseudolites can be used in situations where GPS signals from orbiting satellites may be unavailable, such as in tunnels, mines, buildings, urban canyons, or other enclosed areas. Another example of a pseudolite is called a radio beacon. The term &quot;satellite&quot; as used herein is intended to include pseudolites, pseudolite equivalents, and other possibilities. The term "SPS signal" as used herein is intended to include SPS-like signals from pseudo-satellite or pseudo-satellite equivalents. ^ "Global Navigation Satellite System" (GNSS) Corresponding to an SPS containing an SV that transmits a synchronized navigation signal according to a common messaging format. This GNSS may include, for example, a cluster of clusters of clusters of SVs in a synchronous track, simultaneously transmitting navigation signals to most of the earth's surface. The location above. An SV that is a member of a particular GNSS cluster typically transmits navigation signals in a format unique to the particular GNSS format. Thus, the techniques used to obtain the navigation signals transmitted by the SVs in the first GNSS can be changed to For obtaining a navigation signal transmitted by the SV in the second GNSS. In a specific example (although the claimed subject matter is not limited to this aspect), it should be understood that GPS, Galileo and Glonass each represent a different name from the other two. GNSS for SPS. However, these are only examples of SPS associated with different GNSS, and the claimed subject matter is not limited to this state 123967-1000321.doc •13· 1345069. / According to a feature, the navigation receiver can obtain a pseudorange measurement value of a specific SV based at least in part on obtaining a signal encoded by a periodically repeated PN code sequence from a specific sv. The acquisition of this signal can include - The "code phase" involved in time and associated points in the PN code sequence. For example, in a particular feature, the code phase may relate to a locally generated clock signal and a PN code-specific chip. However, this is merely an example of a method of representing a code phase, and the claimed subject matter is not limited to this aspect. According to an example &apos;code phase detection, several fuzzy candidate pseudoranges or pseudorange hypotheses can be provided at the PN code interval. Therefore, the navigation receiver can obtain the pseudorange from the SV based at least in part on the detected code phase and selecting one of the pseudorange hypotheses as a solution to the ambiguity of the true pseudorange measurement of the SV. Measurement value. As noted above, the navigation receiver can estimate its position based at least in part on the pseudorange measurements obtained from the plurality of SVs. According to an example (although the claimed subject matter is not limited in this aspect), the signal transmitted from sv can be modulated by one or more data signals over a predetermined period and in a predetermined sequence. In the GPS signal format, for example, the SV may transmit a signal encoded with a known PN code sequence that is repeated at intervals of milliseconds. Additionally, for example, the signal can be modulated by a data signal that can be changed within a predetermined 20 millisecond interval. According to a specific example (although the claimed subject matter is not limited to this aspect), the data signal and the repeated PN code sequence can be combined by modulo 2 and operation before being mixed with the carrier signal of the uncompressed frequency to be transmitted from the SV. 0B is a timing diagram illustrating a pseudorange hypothesis 152 on a data signal 154 in a signal received from an SV in a GPS cluster at 123967-1000321.doc • 14·1345069, superimposed at a reference location, according to an example. . Here, the bit interval in the data signal .154 may be 20 ms long and extend over 20 pseudorange hypotheses 152, which are based at least in part on the sequence of 重复·〇ms PN codes for repetitions. Determining the detection of the code phase" by selecting one of the pseudorange hypotheses i 56 within a 20 millisecond bit interval, the receiver can determine the boundary between the 20 ms data bit intervals or divide the data signal 1 54 The &quot;bit edge&quot; of consecutive bits. According to an example (although the claimed subject matter is not limited in this aspect), the receiver can detect a bit edge in a data signal modulated by a signal received from an SV based at least in part on a signal received from another SV. And/or the boundary between bit intervals. Here, the pseudorange hypothesis of the first signal can be associated with the pseudorange hypothesis of the second signal. Based at least in part on the correlation between the pseudorange hypothesis of the first signal and the pseudorange hypothesis of the second kth, the receiver can resolve the alignment and/or phase of the bit edge in the modulated signal relative to the true pseudorange. Fuzziness. However, this is merely an example' and the subject matter claimed is not limited to this aspect. 2 shows a schematic diagram of a system capable of determining the position at a receiver by measuring a pseudorange to sV, according to an example. The receiver at center 166 of the reference location on earth surface 168 can observe and receive the k numbers from svi and SV2. The reference position center 166 can be known to be within a reference location area 164 defined by, for example, a circle having a radius of about 1 〇 km. However, it should be understood that this is merely an example of how the uncertainty of the estimated position may be represented in accordance with a particular aspect, and the claimed subject matter is not limited in this respect. In an example, region 164 can include a coverage area for a particular unit of a cellular wireless communication network at a known location. 123967-100Q32l.doc -15- 1345069 According to an example, a receiver at reference location area 164 can communicate with, for example, a server via a wireless communication link in, for example, a satellite communication network or a terrestrial wireless communication network (not Other devices communicated as shown). In a particular example, 'this server can transmit an auxiliary (AA) message to the receiver, and the received auxiliary (AA) message includes the receiver for processing the signal received from sv and/or obtaining the pseudorange measurement. Information. Alternatively, such AA messages may be provided from information stored locally in the memory of the receiver. Here, the information of the local health storage can be stored from a removable memory device to the local memory and/or the AA message received from a previous server can be locally stored (only a few EXAMPLES In a particular example, an 'AA message may include, for example, an indication of the location of SV1 and SV2, an estimate of the location of the reference location center 166, an uncertainty associated with the estimated location, an estimate of the current time, and/or the like. Information on the information of the object. Such information indicating the location of Svi and SV2 may include ephemeris information and/or almanac information. As indicated by the specific examples, the receiver may be based, at least in part, on the ephemeris and/or almanac and φ. A rough estimate of time is used to estimate the position of SV1 and SV2. This estimated position of the SV may include, for example, an estimated azimuth relative to the reference direction and an elevation angle of Luyi relative to the Earth's horizon at the center 166 of the reference position and / or geocentric XYZ coordinates. According to an example 'SV1 and SV2 can be the same or different GNSS, members of the group in the specific example described below, SV1 can be a member of the GPS cluster and SV2 can It is a member of the Galileo cluster. However, it should be understood that this is only an example of how the receiver can receive signals from SVs belonging to different GNSS clusters, and the claimed subject matter is not limited to this aspect. 123967-I000321.doc -16 - S) 1345069 FIG. 3 is a flow chart of a fuzzy I1 generated for reducing a signal received from sv according to an example. Here, the receiver at the reference location area may receive a first signal encoded by a first periodically repeated PN code from the first SV (eg, SV1), and from the second sv (eg, SV2) A second signal encoded with a second periodically repeated PN code is received. To obtain the first signal at step 202, the receiver can detect the Doppler frequency and code phase of the received signal. This detection of the code phase may include, for example, the correlation of the code and/or time offset version of the locally generated code sequence with the received first signal as described below. For example, in an example of transmitting a received signal from a Galileo SV, the code phase can be detected within a 4.0 ms repetition period of the PN code sequence. Alternatively, when the received signal is transmitted from the GPS SV, the code phase can be detected within a repetition period of the PN code sequence. However, 'this is only an example of how the signal from a particular GNSSisv can be obtained' and is claimed The subject matter is not limited to this aspect. In a particular alternative, the first and second SVs may be from a GPS cluster, and at least one of the two SVs is capable of transmitting a lic signal. As with the 'Airword' L1C navigation signal from the Galileo SV, it may contain a signal encoded with a PN code sequence repeated in a 4.0 ms period. Accordingly, it should be understood that although the specific examples discussed herein may be related to the use of SVs from Galileo and GPS clusters, such techniques may also be applied to two GPS svs capable of transmitting L1C signals using at least one of sv. Other examples. Again, these are merely examples of specific signals that can be received from the SPS at the receiver at the reference location area and the claimed subject matter is not limited in this respect. Step 204 may obtain the second signal received from the second 123967-1000321.doc • 17· 1345069 two sv using the techniques discussed above in connection with step 2〇2. However, it should be understood that the received second signal may be transmitted according to a GNSS format different from the GNSS format used to transmit the first signal. Here, for example, the first received signal can be transmitted from the SV in the GPS cluster and the second received signal can be transmitted from the SV in the Galileo cluster. Alternatively, the second received signal may be transmitted from the GPS cluster by 'transmitting the first received signal' from the SV in the Galileo cluster. However, it should be understood that these are merely examples of how the receiver can receive signals from SVs belonging to different GNS S clusters, and the claimed subject matter is not limited in this respect. Upon obtaining a signal from the SV (e.g., as described above with reference to steps 202 and 204), the receiver can determine the pseudorange hypothesis from code phase detection. For example, in a particular example in which the SV transmits a signal according to the GPS format, the receiver can be at least partially based on the phase of the periodically repeated PN code sequence detected in the signal obtained at the receiver by 1 〇ms. The pseudorange hypothesis is determined at intervals and/or in increments of approximately 3.0 X 105 meters. For example, in another example of Sv according to a Galileo format transmission number, the phase of the periodically repeated PN code sequence detected in the signal obtained at the receiver can be based at least 4.0 ms intervals and/or The pseudorange is determined in increments of about 1 · 2 χ 1 〇 6 meters. In the process of detecting the phase of the ρν code sequence of the signal transmitted by the SV, the receiver can use, for example, the information provided to the receiver in a message. However, this is merely an example of how the receiver can measure the phase of the periodic weight sequence of the self-transmitted signal, and the claimed subject matter is not limited in this respect. According to an example 'Step 2〇6, the pseudorange hypothesis of the signal received from the first SV (S V1) can be associated with the pseudorange hypothesis 123967-1000321.doc 1345069 of the signal received from the second SV (SV2) . As illustrated in FIG. 4, based on a particular example, at least in part based on an estimated difference between the distance from the center of the reference location to the first SV and the distance from the center of the reference location to the first sv, the self-group at the reference location region The pseudorange hypothesis 254 of the signal received by the first SV is associated with a pseudorange hypothesis of the signal received from the second sv of the Galileo cluster order at the reference location area. Here, it should be observed that the distance from the reference position to the first sv may be different from the distance from the reference position to the second sv. In a particular example, the information provided to the receiver (eg, at the reference location area A) in the AA message can be used to estimate the distance from the center of the reference location to the first 8 与 and the center of the reference position to the second 8¥ The difference in distance. The actual difference 1 may define the difference between the distance from the reference position to the first sv and the distance from the reference position to the second SV (e.g., in units of time). Here, the actual difference L is expressed as follows: 1 where: T! = Lu propagation delay of the signal from §¥1 measured at the reference position at the reference position; and D = 2 = at the same position at the reference position The propagation delay of the signal from SV2 measured over time. Therefore, in order to associate the pseudorange hypothesis 254 with the pseudorange hypothesis 256, the receiver can determine between the distance from the reference position center to the first sv and the distance from the center of the reference position to the second SV according to the following relationship (i) Estimate of rates (for example, in time units): 123967-1000321 .doc -19- 1345069 E[L]=E[T2-T!] (1) Because the errors associated with D2 and Τι can be assumed to be general Independent, so the expression Ε[Τ2·Τ1] can be approximated by the expression ΕΡ+ΕΙ:!^]. Here, in a specific example, the value of the expression Ε[Τ2]_Ε[Τι] for a specific time can be A receiver is made aware of and/or available to a receiver by means of a message. Or a receiver can obtain the value of the expression EtTd-EI;!^] for a specific time from the information received in the message. The estimate E[Z] of the difference Z (applied to the associated pseudorange false sighs 254 and 25 6 according to the relationship (1)) can be reduced to an expression that eliminates the receiver clock error τ as follows: E[ Z] = E[T2]-E[T,] =(RsV2/ct)-(RSVj/ct) —(RsV2_Rsvl )/c where: C=speed of light; τ=receiver clock offset error;

Rsvi=自參考位置中心至SV1之距離的估計；且 Rsv2=自參考位置中心至SV2之距離的估計。 此處，應觀察到，可將差估計ER]之值以線性長度單位 或時間單位來表達，且E[Z]之值的此表達式之單位之間的 轉換可由以適當單位表達之光速來提供。因此，應理解， 在不偏離所主張之標的物的情況下，差估計町***時間 軸上標記於0 ms、4 ms、8 ms、12 ms、16 ms及20 ms。因 此’在此特定實例中，調變GP S信號的資料信號之位元邊 沿可出現於ί=〇與i=2〇 ms之間的某一時刻。此處，自在參 考位置區域處自GPS SV所接收之信號得到的偽距假設254 可（例如）以1.0 ms之增量來判定，例如表示為一列具有1〇 ms的增量之垂直小刻度標記，其平行該時間轴延伸且在這 個實例中始於户0 ms ’且其中每四個刻度標記表示一偽距 假s史252，其在一橢圓中顯示。於此，自在參考位置區域 處自伽利略sv所接收之信號得到的偽距假設256可（例如） 以4.0 ms之增量來判定，例如顯示為另一列垂直小刻度標 記（標示為偽距假設250)，其平行於時間軸延伸且在這個實 例中自i=0 ms稍微偏移，且具有一4.0 ms之增量。。應理 解，在參看圖4及參看圖5A至6C所說明之特定實例中，自 第一 SV所發射之伽利略信號可與調變自第二5^所接收之 123967-1000321.doc -21 - 1345069 GPS信號的資料信號同步。以下更詳細地說明，在一實例 中，偽距假設256之一特定偽距假設可唯一地藉由如上文 在關係（1)中所判定的差估計E[I]而與偽距假設254之特定 偽距假设252相關聯，例如，於圖4中表示為較長的垂直 線，其垂直於時間軸自該等橢圓中延伸至該列垂直小刻度 標記（標示為偽距假設250)。 根據一實例（儘管所主張之標的物不限於此態樣），差估 計E[L]之準確度至少部分基於與參考位置區域（例如，如 XYZ地心座標中所表示）之估計相關聯的不確定度之量或 程度。在圖4中，差估計Ε[Ι]之值展示為約〇.6 ms*單側不 破定度小於0_5 ms。因此，偽距假設250唯一地與與偽距假 設250分開0.6 +/- 0.5 ms的偽距假設252相關聯。因此，若 知曉差估計E[Z]精確至0.5 ms内，則如圖4中所說明，來自 偽距假設254中的特定偽距假設252可與特定單一偽距假設 250相關聯。此處，在圖3步驟2〇8處，剩餘之不相關偽距 假設254(例如’在圖4中，不在橢圓中表示的刻度標記）可 作為用於判定GP S資料信號之位元邊沿相對於資料位元間 隔内之真實偽距的相位及/或對準之假設而被消除。如圖4 中根據一特定實例所說明，保留20個偽距假設254中的五 個與偽距假設250相關聯之偽距假設252。因此，需要使用 (例如）應用於與五個剩餘偽距假設252(例如不在橢圓中表 示的刻度標記）相關聯的相關量度之似然函數來處理僅五 個剩餘偽距252 ’而非處理用於偵測位元邊沿袓對於真實 偽距之相位及/或對準的20個偽距假設。此處，藉由將相 123967-1000321.doc •22· 鄰偽距假設之間距自1 .〇 ms增加至4.0 ms，此似然函數可 更快及/或使用更少的處理資源或使用更低的輸入信號強 度來解決五個剩餘偽距假設252中的此模糊性。 在上文圖4中所說明之實例中，差估計E[z]中之小於〇 5 毫秒的單側不確定度允許偽距假設250與單一偽距假設252 關聯。然而’在其他實例中，差估計中之〇.5毫秒的此 單側不確定度可大於〇.5毫秒，從而導致兩個或兩個以上 偽距假設的關聯。此處，此似然函數亦可應用於解決此等 額外模糊性。 在一替代實例中，接收器可消除用於藉由解碼伽利略信 號上之引示通道而偵測所獲得的GPS信號中之位元邊沿之 相位及/或對準的偽距假設。此處，伽利略信號之此引示 通道可以一在100 ms週期上重複的已知資料序列來編碼， 其中100 ms資料序列重疊25個連續的4.0毫秒之曆元及/或 重複之PN碼序列。在獲得伽利略信號的過程中對4.〇 ms PN碼序列中之碼相位的偵測可提供25個假設用於相對於真 實偽距對準100 ms資料序列。舉例而言，為在25個假設中 選擇，接收器可藉由順序地將1 〇〇 ms資料序列之至少一部 分的達25個可能之4.0 ms偏移與已接收之伽利略信號相關 直至結果大於一預定臨限值來判定10〇 ms資料序列之相位 對準。當結果大於預定臨限值時，接收器可自25個對準假 設中選擇經偵測之碼相位相對於1〇〇 ms資料序列的相關聯 對準。 如圖5 A中根據一特定實例所說明，一旦判定經偵測之碼 123967-1000321.doc •23· 1345069 相位相對於100 ms資料序列對準，則可藉由根據關係（1)判 定的差估計E[I]而使20 ms資料位元間隔内的GPS信號之偽 距假設280與含有單一偽距假設286的1〇〇 ms資料序列之 ms區段相關聯。又，為說明之目的，將此差估計中之單側 不確定度展示為小於0.5毫秒。此處，偽距假設28〇中之單 一偽距假設284與單一偽距假設286相關聯。因此，可在已 接收之；i料仏號中不模糊地偵測位元邊沿相對於已接收 GPS信號之真實偽距的對準。然而，又在其他實例中，差 估計E[L]中的〇·5毫秒之此單側不確定度可大於〇 5毫秒， 從而導致兩個或兩個以上偽距假設相關聯。又，似然函數 亦可應用於解決此等額外模糊性。 在另一特定實例中，對調變一在參考位置處自GPS sv 所接收之信號的資料信號之位元邊沿的偵測可有助於獲得 自伽利略SV所接收之信號。如圖5B中所說明，所獲得之 GPS信號290包含1.0毫秒重複之pn碼序列，且藉由具有如 上文所說明之20.0毫秒位元間隔之資料信號292來調變。 此處，應觀察到資料信號292之此等20·〇毫秒位元間隔中 之任一者可與已接收伽利略信號294之五個連續4 〇毫秒重 複之PN碼序列相關聯。因此，藉由偵測資料信號292之位 元邊沿，可藉由差估計E[Z]而使所獲得之Gps信號中的偽 距假設296與已接收伽利略信號294之部分相關聯。因此， 在獲得伽利略信號的過程中，碼相位搜尋範圍可以藉由差 估計Ε[Ζ]而與已接收GPS信號292中所偵測之偽距296相關 聯的已接收伽利略信號中的時刻為中心。此碼相位搜尋可 123967-1000321.doc _ 24 _ 1345069 接耆以與差估计E [Z]相關聯的不確定度（其 一特定實例所示之關係（3)來判定）為邊界。 根據一實例，可自以下分詈刺宗Α 4 土 里疋在參考位置處自SV接 收的導航信號之時序的不確定廑：接此吳 疋度接收益處的時脈之時序 的不確定度；SV相對於參考位置之位署.κ 气置之位置，及正接收導航信 ’可根據如下關係（2)表達 號之時序的單側不確定度Rsvi = an estimate of the distance from the center of the reference position to SV1; and Rsv2 = an estimate of the distance from the center of the reference position to SV2. Here, it should be observed that the value of the difference estimate ER] can be expressed in linear length units or time units, and the conversion between the units of this expression of the value of E[Z] can be expressed by the speed of light expressed in appropriate units. provide. Therefore, it should be understood that the value of the difference estimation can be expressed interchangeably in units of time or linear length without deviating from the claimed subject matter, 123967-1000321.doc • 20-1345069. According to an example, step 206 may calculate an estimated difference between the distance from the reference position center 166 to SV1 (&quot;Rsvi&quot;) and the distance from the reference position center 166 to SV2 (&quot;Rsv2&quot;). Here, step 206 may obtain AA information from one or more AA messages indicating the position of svi and SV2 in the coordinates of the center χ ζ (, in addition to the estimation of the coordinates of the XYZ coordinates of the center of the reference position center 166. Estimated. Using these geocentric XYZ coordinates, step 206 is available. The Euclidean distance of the Rsvi and Rsv2. Figure 4 is a timing diagram illustrating the association of pseudorange assumptions for a duration of 20 ms starting at ί = 0 and ending at ί = 20 ms, for example, as indicated on the horizontal time axis at 0 ms, 4 ms, 8 Ms, 12 ms, 16 ms, and 20 ms. Thus, in this particular example, the bit edge of the data signal of the modulated GP S signal can occur at some point between ί = 〇 and i = 2 〇 ms. Here, the pseudorange hypothesis 254 derived from the signal received from the GPS SV at the reference location area can be determined, for example, in increments of 1.0 ms, for example as a column of vertical small tick marks having increments of 1 〇ms. It extends parallel to the time axis and begins in this example with 0 ms ' and each of the four tick marks represents a pseudorange false s history 252, which is displayed in an ellipse. Here, the pseudorange hypothesis 256 obtained from the signal received from Galileo sv at the reference position region can be determined, for example, in increments of 4.0 ms, for example, as another column of vertical small scale marks (labeled as pseudorange hypothesis 250) ), which extends parallel to the time axis and is slightly offset from i=0 ms in this example, and has an increment of 4.0 ms. . It should be understood that in the particular example illustrated with reference to FIG. 4 and with reference to FIGS. 5A through 6C, the Galileo signal transmitted from the first SV can be modulated from the second received by 123967-1000321.doc -21 - 1345069 The data signals of the GPS signals are synchronized. As explained in more detail below, in one example, one of the pseudorange hypotheses 256, a particular pseudorange hypothesis, can be uniquely represented by the difference estimate E[I] as determined above in relation (1) and the pseudorange hypothesis 254 The particular pseudorange hypothesis 252 is associated, for example, as a longer vertical line in FIG. 4 that extends from the ellipse perpendicular to the time axis to the column vertical small tick mark (labeled as pseudorange hypothesis 250). According to an example (although the claimed subject matter is not limited in this aspect), the accuracy of the difference estimate E[L] is based, at least in part, on an estimate associated with a reference location region (eg, as represented in the XYZ geocentric coordinates). The amount or extent of uncertainty. In Figure 4, the value of the difference estimate Ε[Ι] is shown to be approximately .6 ms* unilateral non-breaking less than 0_5 ms. Therefore, the pseudorange hypothesis 250 is uniquely associated with a pseudorange hypothesis 252 that is separated from the pseudorange hypothesis 250 by 0.6 +/- 0.5 ms. Thus, if the difference estimate E[Z] is known to be accurate to within 0.5 ms, then as illustrated in Figure 4, the particular pseudorange hypothesis 252 from the pseudorange hypothesis 254 can be associated with a particular single pseudorange hypothesis 250. Here, at step 2〇8 of FIG. 3, the remaining irrelevant pseudorange hypothesis 254 (eg, 'the tick mark not represented in the ellipse in FIG. 4) can be used as the bit edge for determining the GP S data signal. The phase and/or alignment assumption of the true pseudorange within the data bit interval is eliminated. As illustrated in Figure 4, according to a particular example, five of the 20 pseudorange hypotheses 254 are reserved for pseudorange hypotheses 252 associated with the pseudorange hypothesis 250. Therefore, it is necessary to use, for example, a likelihood function applied to the correlation metric associated with the five remaining pseudorange hypotheses 252 (eg, not the tick marks represented in the ellipse) to process only five remaining pseudoranges 252 ' instead of processing 20 pseudorange assumptions for the phase and/or alignment of the true pseudorange are detected on the edge of the bit. Here, by increasing the distance between the phases 123967-1000321.doc •22· adjacent pseudoranges from 1 〇ms to 4.0 ms, this likelihood function can be faster and/or use less processing resources or use more. The low input signal strength resolves this ambiguity in the five remaining pseudorange hypotheses 252. In the example illustrated in FIG. 4 above, a one-sided uncertainty of less than 〇 5 milliseconds in the difference estimate E[z] allows the pseudorange hypothesis 250 to be associated with a single pseudorange hypothesis 252. However, in other instances, this one-sided uncertainty of 5 milliseconds in the difference estimate may be greater than 〇.5 milliseconds, resulting in an association of two or more pseudorange hypotheses. Here, this likelihood function can also be applied to address these additional ambiguities. In an alternate example, the receiver can eliminate the pseudorange hypothesis for detecting the phase and/or alignment of the bit edges in the GPS signals obtained by decoding the pilot channel on the Galileo signal. Here, the pilot channel of the Galileo signal can be encoded by a known data sequence repeated over a 100 ms period, wherein the 100 ms data sequence overlaps 25 consecutive 4.0 millisecond epochs and/or repeated PN code sequences. The detection of the code phase in the 4. 〇 ms PN code sequence during the acquisition of the Galileo signal provides 25 hypotheses for aligning the 100 ms data sequence with respect to the true pseudorange. For example, to select among the 25 hypotheses, the receiver can sequentially correlate up to 25 possible 4.0 ms offsets of at least a portion of the 1 〇〇ms data sequence with the received Galileo signal until the result is greater than one The threshold is predetermined to determine the phase alignment of the 10 〇 ms data sequence. When the result is greater than the predetermined threshold, the receiver can select the associated alignment of the detected code phase relative to the 1 〇〇 ms data sequence from the 25 alignment hypotheses. As illustrated in FIG. 5A, according to a specific example, once the detected code 123967-1000321.doc • 23· 1345069 phase is aligned with respect to the 100 ms data sequence, the difference can be determined by the relationship (1). The E[I] is estimated such that the pseudorange hypothesis 280 of the GPS signal within the 20 ms data bit interval is associated with the ms segment of the 1 〇〇 data sequence containing the single pseudorange hypothesis 286. Again, for illustrative purposes, the one-sided uncertainty in this difference estimate is shown to be less than 0.5 milliseconds. Here, the single pseudorange hypothesis 284 of the pseudorange hypothesis 28 is associated with a single pseudorange hypothesis 286. Therefore, the alignment of the bit edge relative to the true pseudorange of the received GPS signal can be detected without blurring in the received nickname. However, in yet other examples, this one-sided uncertainty of 〇·5 milliseconds in the difference estimate E[L] may be greater than 〇 5 milliseconds, resulting in two or more pseudorange hypotheses being associated. Again, the likelihood function can also be applied to address these additional ambiguities. In another specific example, detecting the bit edge of the data signal of the signal received from the GPS sv at the reference location can aid in obtaining the signal received from the Galileo SV. As illustrated in Figure 5B, the obtained GPS signal 290 contains a 1.0 millisecond repeating pn code sequence and is modulated by a data signal 292 having a 20.0 millisecond bit interval as explained above. Here, it should be observed that any of these 20 〇 millisecond bit intervals of the data signal 292 can be associated with five consecutive 4 〇 millisecond repeated PN code sequences of the received Galileo signal 294. Thus, by detecting the bit edge of the data signal 292, the pseudorange hypothesis 296 in the obtained Gps signal can be correlated with the portion of the received Galileo signal 294 by the difference estimate E[Z]. Therefore, in the process of obtaining the Galileo signal, the code phase search range can be centered on the time in the received Galileo signal associated with the pseudorange 296 detected in the received GPS signal 292 by the difference estimate Ζ[Ζ] . This code phase search can be 123967-1000321.doc _ 24 _ 1345069 The boundary is determined by the uncertainty associated with the difference estimate E [Z] (determined by the relationship (3) shown in a specific example). According to an example, the uncertainty of the timing of the navigation signal received from the SV at the reference position may be determined from the following: the uncertainty of the timing of the clock receiving the benefit; The position of the SV relative to the reference position. The location of the κ gas, and the receiving navigation letter ' can be based on the following relationship (2) the unilateral uncertainty of the timing of the expression number

可根據下文根據 號的參考位置之不確定度。此處 在參考位置處自SV接收之導航信 SV Tunc : SV_Tunc=Clock_Tunc+[(Punc/c)*c〇s(sv^el)] ⑺ 其中：The uncertainty of the reference position according to the number below can be used. Here, the navigation signal received from the SV at the reference position SV Tunc : SV_Tunc=Clock_Tunc+[(Punc/c)*c〇s(sv^el)] (7) where:

Clock_TUnC=以時間單位表示的接收器處之時脈之時 序的不確定度；Clock_TUnC = the uncertainty of the timing of the clock at the receiver in units of time;

Punc=以長度單位表示的接收器距參考位置之位置的 單側不確定度； c=光速；且 SV一el=參考位置處SV之仰角。 根據一實例，在某些條件下’在參考位置處獲得來自第 一 SV之伽利略信號及準確知曉在參考位置處所接收之伽利 略信號的時序可有助於獲得自第二SV所接收之GPS信號。 又，如上文所}曰出，應理解，自第一 SV發射之伽利略信號 可與一調變自第二SV所接收之GPS信號的資料信號同步。 此外，應觀察到’已接收之GPS信號中之資料信號的20毫 秒週期對應於已接收之伽利略信號的五個連續4. 〇毫秒曆 123967-1000321.doc -25- 1345069 元。因此’藉由具有如上文在關係（2)中所判定的在參考位 置處自伽利略SV接收的導航信號之時序之足夠準確度，導 航接收器可使已接收伽利略信號的特定4〇毫秒曆元（來自 五個此等4.0毫秒曆元中）之開始或前邊沿與在參考位置處 接收的GPS信號中之位元邊沿相關聯。舉例而言，可藉由 如上文根據關係（1)所判定之差估計E[z]而使在參考位置處 接收的已接收伽利略信號的此4.0毫秒曆元（其已知達足夠 準確度）與在參考位置處接收的GPS信號之資料信號中的位 元邊沿相關聯。由於以足夠準確度在參考位置處接收伽利 略信號之時序’所以可藉由一已知相位（若可用）及差估計 E[Z]而使4.0毫秒曆元之前邊沿與在參考位置處接收的gPs 信號中之位元邊沿相關聯。 如圖6A中所示，在參考位置區域處自第一 sV所接收的 伽利略信號308可包含在ί= 1.0、5.0、9.0、13.0、17.0、 21.0、25.0、29.0、33.0及3 7.0毫秒處開始的4.0毫秒曆 元。藉由一包含在 ί= 1.0、2.0、3.0、4.0、5.0、6.0、7.0、 8.0等毫秒處之1.0毫秒曆元的重複prn碼310來調變在參考 位置區域處自第二SV所接收之GPS信號。假如如在參考位 置區域處所接收的伽利略信號之時序的單側不破定度（例 如如根據關係（2)判定）在2.0毫秒内，則接收器可使4.〇毫秒 盾元之特定前邊沿304(在雙側不確定度範圍〆内）與來自伽 利略SV之特定資料曆元之發射的開始相關聯。舉例而言， 可在一週之開始、資料訊框之開始、資料區段之開始等發 生特疋^料曆元之發射的此開始。由於自伽利略之資料信 123967-1000321 .doc •26· 1345069 號的發射可與來自GPS之資料信號的發射同步，所以接收 器可使4.0毫秒伽利略曆元之特定前邊沿304與GPS資料信 號302之特定位元邊沿306相關聯。此處，應觀察到，例如 如根據關係（1)所判定之差估計Ε[Ζ]可用於至少部分基於差 估計Ε[Ζ]之準確度來以一準確度估計位元邊沿306之時 刻。Punc = one-sided uncertainty of the position of the receiver from the reference position expressed in units of length; c = speed of light; and SV - el = elevation angle of SV at the reference position. According to an example, obtaining the Galileo signal from the first SV at the reference location and accurately knowing the timing of the Galileo signal received at the reference location under certain conditions may facilitate obtaining the GPS signal received from the second SV. Again, as noted above, it should be understood that the Galileo signal transmitted from the first SV can be synchronized with a data signal that is modulated from the GPS signal received by the second SV. In addition, it should be observed that the 20 millisecond period of the data signal in the received GPS signal corresponds to five consecutive 4. 〇 milliseconds of the received Galileo signal of 123967-1000321.doc -25 - 1345069. Thus, by having sufficient accuracy of the timing of the navigation signals received from the Galileo SV at the reference position as determined in relation (2) above, the navigation receiver can cause a particular 4 〇 millisecond epoch of the received Galileo signal The start or front edge (from five of these 4.0 millisecond epochs) is associated with the bit edge in the GPS signal received at the reference location. For example, this 4.0 millisecond epoch of the received Galileo signal received at the reference location (which is known to be sufficiently accurate) can be obtained by estimating the difference E[z] as determined above based on relationship (1) Associated with a bit edge in the data signal of the GPS signal received at the reference location. Since the timing of receiving the Galileo signal at the reference position with sufficient accuracy 'so the edge of the 4.0 millisecond epoch and the gPs received at the reference position can be made by a known phase (if available) and the difference estimate E[Z] The bit edges in the signal are associated. As shown in FIG. 6A, the Galileo signal 308 received from the first sV at the reference location area may be included at ί = 1.0, 5.0, 9.0, 13.0, 17.0, 21.0, 25.0, 29.0, 33.0, and 3 7.0 ms. The 4.0 millisecond epoch. Modulating from the second SV at the reference location area by a repeated prn code 310 containing 1.0 millisecond epochs at ί=1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, etc. GPS signal. If the one-sided unbreakiness of the timing of the Galileo signal received at the reference location area (eg, as determined by relationship (2)) is within 2.0 milliseconds, the receiver may cause a particular front edge 304 of the 4. 〇 millisecond dong. (within the two-sided uncertainty range )) associated with the start of the transmission of a particular data epoch from Galileo SV. For example, the beginning of the launch of a special epoch can occur at the beginning of the week, at the beginning of the data frame, at the beginning of the data segment, and the like. Since the transmission from Galileo's information letter 123967-1000321.doc •26·1345069 can be synchronized with the transmission of the data signal from the GPS, the receiver can make the specific front edge 304 of the 4.0 millisecond Galileo epoch and the GPS data signal 302 A particular bit edge 306 is associated. Here, it should be observed that, for example, the difference estimate Ε[Ζ] as determined according to relationship (1) can be used to estimate the time of the bit edge 306 with an accuracy based at least in part on the accuracy of the difference estimate Ζ[Ζ].

如上文所說明，一不確定度範圍Α可自根據關係（2)判定 之單側不確定度範圍得到。根據一實例，一額外不確定度 範圍C/可表示一與差估計E[L]相關聯的不確定度。再次參 看圖6A之特定實例，若此不確定度範圍t/單側小於0.5毫 秒，則可唯一地判定與GPS信號上的特定1.0毫秒PRN曆元 之前邊沿相關聯的位元邊沿之相位及/或對準。若不確定 度範圍C/單側大於0.5毫秒，則GPS SV之此位元邊沿之精 確相位及/或對準仍可保留些微的模糊性。在一特定實例 中，可根據如下關係（3)判定關於SV1及SV2之差估計Ε[Ζ] 的此單側不確定度： t/=l/c*Punc*[{cos(E2)*cos(A2)-cos(El)*cos(Al)}2+{cos(E2)*sin(A2)- cos(El)*sin(Al)}2]丨/2 (3) 其中： c = 光速 A1 = SV1與參考位置之估計方位角； A2 = SV2與參考位置之估計方位角；As explained above, an uncertainty range Α can be derived from the one-sided uncertainty range determined by the relationship (2). According to an example, an additional uncertainty range C/ may represent an uncertainty associated with the difference estimate E[L]. Referring again to the particular example of FIG. 6A, if the uncertainty range t/one side is less than 0.5 milliseconds, the phase of the bit edge associated with the edge of the particular 1.0 millisecond PRN epoch on the GPS signal can be uniquely determined and/or Or aligned. If the uncertainty range C/one side is greater than 0.5 milliseconds, the precise phase and/or alignment of this bit edge of the GPS SV may still retain some ambiguity. In a specific example, this one-sided uncertainty with respect to the difference estimate S[Ζ] between SV1 and SV2 can be determined according to the following relationship (3): t/=l/c*Punc*[{cos(E2)*cos (A2)-cos(El)*cos(Al)}2+{cos(E2)*sin(A2)- cos(El)*sin(Al)}2]丨/2 (3) where: c = speed of light A1 = estimated azimuth of SV1 and reference position; A2 = estimated azimuth of SV2 and reference position;

El = SV1與參考位置之估計仰角； 123967-1000321.doc •27- 1345069 E2 = SV2與參考位置之估計仰角；且El = estimated elevation angle of SV1 and reference position; 123967-1000321.doc • 27-1345069 E2 = estimated elevation angle of SV2 and reference position;

Pune =以長度單位表示之參考位置的單側不確定 度。 措由如上文所說明而估計調變一在參考位置處接收之 GPS信號的資料信號之位元邊沿的位置，可使用具有增強 敏感度之預先债測積分（pre-detection integration, PDI)獲 付已接收之GPS彳§號。舉例而言’在位元邊沿306與312之 間，資料信號302不改變。因此，可在如上文描述之至少 部分基於在參考位置區域處獲得之伽利略信號的位元邊沿 306之估計與312之估計之間在已接收gps信號之一部分上 執行具有增強敏感度之PDI。 根據一替代特徵’在判定在參考位置區域處接收之Gps 資料信號之位元邊沿之相位及/或對準的過程中，一接收 器可自在參考位置處接收的伽利略信號獲取額外資訊以准 許已接收伽利略信號之時序的額外初始不確定度。詳言 之’應觀察到’來自伽利略SV之信號中的週期性重複之 PN碼序列中的碼片可經速率1/4維特比（rate 1/2 Viterbi)編碼 為一”資料通道其中以交替4.0 ms曆元上之&quot;1&quot;或·，〇&quot;來 維特比編碼在4 · 0毫秒曆元上發射之pn碼序列。 在上文所說明之實例中’自在參考位置區域處對伽利略 信號的獲得及對單側不確定度不大於2. 〇毫秒且差估計e[I] 的單側不確定度t/不大於〇.5毫秒的伽利略信號之時序的知 曉而獲取調變一在參考位置區域處接收之Gps信號的資料 k號之位元邊沿。然而，在一替代特徵中，在參考位置處 123967-1000321.doc -28- 1345069 接收的伽利略k號之資料通道的維特比解碼可使得能夠偵 測在參考位置處接收之GPS信號中的位元邊沿，其中根據 ’_判定之伽利略信號之時序的單側不較度高達4 〇 毫秒。此處，已接收GPS信號之資料信號與伽利略信號之 維特比編碼之4.〇毫秒曆元同步。參看圖6b，由於已接收 ，GPS與伽利略信號可同步，所以可知曉（已接收之⑽信 號的）貝料k號322中之位元邊沿326與已接收伽利略信號 之維特比碼（例如）自至&quot;”的特定轉變同步。另外’知 曉”有足夠準確度的已接收伽利略信號之時序，接收器可 判疋自G _£ 1’的此特^轉變位於㈣毫秒不確定度範圍〆 内。因此’接收器可接著推斷轉變324與來自伽利略sv之 特定資料曆元的發射之開始相關聯。又，發射之此開始可 包含週的開始、資料訊框之開始、資料區段之開始等。由 於來自伽利略之資料信號之發射可與來自㈣的資料信號 之發射同步，所以接收器可藉由差估計_而使8·〇毫秒伽^ 利略曆元之特定前邊沿324與調變Gps信號的資料信號切 之特定位元邊沿326相關聯’且差估計EW之單側不確定 度C7不大於〇5毫秒。阳士 , 因此如上文所說明，可在已接收 GPS信號之-部分上執行pm ’以用於以增強之敏感度在 如上文所描述之至少部分基於在參考位置處獲得之伽利略 k號的位元邊沿326與之估計之間獲得。 、為說明之目的’圖6B將維特比編碼之資料通道的資料通 乙〇展不為具有父替4 〇毫秒暦元中的值&quot;1&quot;及&quot;〇&quot;。然 而’應理解’此等值不必在連續4〇毫秒曆元上交替，且 123967-1000321.doc •29· 1345069 所主張之標的物不限於此態樣。 在又一替代特徵中，GPS接收器可將自在參考位置處獲 得的伽利略信號之引示通道擷取的資訊用於判定在參考位 置處接收的GPS資料信號之位元邊沿的相位及/或對準。如 圖6C中所說明，伽利略信號之此引示通道4〇6可以一在重 疊重複PRN序列404的25個連續4‘0毫秒曆元之1〇〇 ms週期 上重複的已知資料序列來編碼。此處，已接收Gps信號之 寊料L號402可與引示通道406同步。同樣，應觀察到，在 參考位置處接收的引示通道4 之1 〇〇毫秒週期可與資料信 號402之五個連續20毫秒週期相關聯。具有一根據關係 判定的小於50毫秒之已接收伽利略信號的時序之單側不確 定度（或小於10 0毫秒之不確定度範圍）使得經解碼之引示通 道的100毫秒週期之一時刻能夠與來自伽利略SV2特定資 料曆兀的發射之開始（諸如在週的開始、資料訊框之開 始資料區^又之開始等處的發射之開始）相關聯。由於引 示通道406之傳輸可與資料信號4〇2之發射同步，所以接收 器可使引不通道406之loo.o毫秒曆元的特定前邊沿4〇8與 已接收GPSk號之資料信號4〇2中的特定位元邊沿412相關 聯。因此，可藉由根據關係（1)判定的差估計而使已接 收伽利略信號中的經偵測之引示通道之1〇〇毫秒週期中的 一已知時刻與已接收GPS信號的位元邊沿相關聯，且差估 計E[L]中之單側不確定度v不大於〇 5毫秒。又，在判定已 接收GPS 號中的位元邊沿之情況下，pDI可在已接收Gps 信號之一部分上執行，以用於以增強之敏感度在位元邊沿 123967-1000321.doc 1345069 . 之估計之間獲得GPS信號。 . 根據一實例（儘管所主張之標的物不限於此態樣），在參 考位置處接收的GPS信號中之位元邊沿的偵測可用於判定 在參考位置處接收的伽利略信號之維特比編碼邊界β如上 文所說明，例如，可知曉已接收GPS信號之資料信號中的 特定位元邊沿與已接收伽利略信號之維特比碼的自”〇”至 &quot;1”的轉變同步或與自，，丨&quot;至”〇&quot;的轉變同步。同樣，在根攄 • 關係（2)判定的已接收GPS信號之時序的單側不確定度小於 10毫秒之情況下，應觀察到，若自GPS 8乂至伽利略8乂的 估計E[z]之差不確定度小於2.0毫秒，則可藉由上文根據關 係（1)判定的差估計E[L]而使已接收GPS信號之資料信號中 的特定經债測之位元邊沿肖已接收伽#略信號之資料通道 中的此轉變（維特比解碼邊界）相關聯。根據上文關係（3)判 定差不確定度。如圖6D中所說明，例如，在已接收Gps信 號之時序的單側不衫度小於1〇毫秒之情況下，對調變在 • 參考位置處接收的GPS信號482之資料信號4?2之位元邊沿 476的偵測向在參考位置處接收的維特比編碼之伽利略信 f 478提供-準確時間參考。因此，在如所示之雙側不; 定度A小於4.0毫秒的情況下，可唯一地判定伽利略信號 478中之維特比編碼邊界484的轉變。 根據一實例，在一接收器處可見的sv(例如，如AA訊息 中所指不）可與界定待針對該sv而搜尋之碼相位與多普勒 頻率假設之二維域的搜尋窗參數之特定集合相關聯。:圖 7中所說明之一實施例中，用於SV之搜尋窗參數包含碼相 123967-1000321.doc -31- 1345069 位搜尋窗尺寸WIN_SIZEC/&gt;、碼相位窗中心WIN_CENTCjP、 多普勒搜尋窗尺寸WIN_SIZEd〇m及多普勒窗中心 WI^CENT^o/»/» » Η ^ ^ % t ^ ^ IS-801 的無線通信系統中之用戶台的狀況下，此等參數可藉由由 PDE提供至用戶台之AA訊息來指示。 圖7中所說明之用於SV之二維搜尋空間將碼相位軸展示 為水平軸，且將多普勒頻率轴展示為垂直轴，但此指派為 任意的且可相反。將碼相位搜尋窗之中心稱為 WIN_CENTc/&gt;，且將碼相位搜尋窗之尺寸稱為 WIN_SIZEc/3。將多普勒頻率搜尋窗之中心稱為 WINJENT^^，且將多普勒頻率搜尋窗之尺寸稱為 WIN—SIZEdo 尸户。 根據一實例，在自第一 SV獲得第一信號後，可至少部 分基於該第一獲得信號中所偵測的碼相位、接收器位置之 估計及描述對於特定時間ί的第一及第二SV之位置的資訊 來判定用於獲得來自第二SV之第二信號的WIN_CENTc尸及 WIN_SIZEc/&gt;。此處，可將用於獲得第二信號之搜尋空間 分成複數個區段1202a、1202b、1202c，其每一者特徵在 於多普勒頻率之範圍及碼相位之範圍。 根據一實例，表示區段特徵的碼相位之範圍可等於相關 器之通道通過一次通道搜尋區段的容量。例如，在通道容 量為32個碼片之一特定實例中，表示區段特徵的碼相位之 範圍可同樣為32個碼片，但應瞭解，其他實例係可能的。 可使區段以一指定數目之碼片來重疊以避免遺漏在如圖 123967-1000321.doc -32- 1345069 8中所說明之區段邊界處出現的峰值。此處，區段12〇2&amp;之 尾端與區段1202b之前端重疊△個碼片，且區段12〇 2b之尾 知與區段12 0 2 c之韵端同樣重疊△個碼片。由於歸因於此重 疊之附加項’所以由區段表示之碼相位的有效範圍可能會 小於通道容量。舉例而言’在重疊為四個碼片的狀況下， 由區段表示之碼相位的有效範圍可為二十八個碼片。 圖9中根據一特定實例說明一用於獲得來自SVi週期性 φ 重複之信號的系統。然而，此僅為根據一特定實例之能夠 獲得此等信號之系統的一實例，且可在不偏離所主張之標 鲁 的物的情況下使用其他系統。如圖9中根據一特定實例所 說明，此系統可包含一包括處理器13〇2、記憶體13〇4及相 關器1306之計鼻平台。相關器1306可經調適以自由接收器 (未圖示）提供之信號產生相關函數以待由處理器13〇2(直接 地或經由記憶體1304)來處理。相關器13〇6可實施於硬 體、軟體或硬體與軟體之組合中。然而，此等僅為可如何 • 根據特定態樣實施一相關器之實例，且所主張之標的物不 限於此等態樣。 _ 根據一實例，記憶體1304可儲存機器可讀指令，該等機 器可讀指令可由處理器1302存取並執行以提供計算平台之 至少一部分。此處，與此等機器可讀指令結合之處理器 1302可經調適以執行上文參看圖3所說明之過程2〇〇之全部 或部分。在一特定實例中（儘管所主張之標的物不限於 此等態樣），處理器1302可指示相關器13〇6搜尋如上文所 說明之位置判定信號並自由相關器13〇6產生之相關函數得 123967-1000321 .doc •33- 1345069 到量測值。 返回至圖10，無線電收發器1406可經調適以將具有基頻 資訊（諸如語音或資料）之RF載波信號調變於RF載波上，且 解調變一經調變之RF載波以獲取此基頻資訊。天線1410可 經調適以經由一無線通信鏈路傳輸一經調變之RF載波並經 由一無線通信鏈路接收一經調變之RF載波。 基頻處理器1408可經調適以將基頻資訊自CPU 1402提供 至收發器1406以供經由無線通信鏈路傳輸。此處，CPU 1402可自一在使用者介面1416中之輸入設備獲取此基頻資 訊。基頻處理器1408亦可經調適以將基頻資訊自收發器 1406提供至CPU 1402以供經由使用者介面1416中之輸出設 備發射》 使用者介面1416可包含用於輸入或輸出諸如語音或資料 之使用者資訊的複數個設備。此等設備可包括（例如）鍵 盤'顯示幕、麥克風及揚聲器。 SPS接收器（SPS Rx)1412可經調適以接‘並解調變來自 sv之發射，且將經解調變之資訊提供至相關器1418。相關 1418可經調適以自由接收器1412提供之資訊得到相關函 數。舉例而言，對於一給定pN碼，相關器1418可產生一在 設定出一碼相位搜尋窗的碼相位之範圍内及在如上文所說 明之多普勒頻率假設之範圍内界定的相關函數。同樣，可 根據界定之相干及不相干積分參數執行個別相關。 相關器1418亦可經調適以自與由收發器14〇6提供之引示 信號相關的資訊得到與引示相關之相關函數。此資訊可由 123967-1000321.doc 用戶台使用以獲得無線通信服務。 、通道解碼@142G可經調適以將自基頻處SS14G8接收的 解瑪成基礎源位元。在通道符號包含卷積編碼符 ，實例令’此通道解碼器可包含一維特比解碼器。在 、d虎包含卷積碼之串行或並行級聯的第二實例中，通 道解碼器142G可包含渴輪解碼器⑽bo d⑽der)。 J:憶體1404可經調適以儲存機器可讀指令，該等機器可 °貝才曰令可經執行以執行過程、實例、實施例或已經描述或 提議的其實例中之-或多者。cpu 14〇2可經調適以存取並 執行此等機器可讀指令。藉由執行此等機器可讀指令， u 1402可指不相關器1418使用步驟2〇2及2〇4處之特定搜 尋板式執行搜尋，分析由相關器i 4 i 8提供之CM相關函 數’自其蜂值得到量測值’並判定位置之估計是否足夠準 確然而，此等僅為在特定態樣中可由cpu執行的任務之 貫例，且所主張之標的物不限於此等態樣。 在特定實例中，如上文所說明，用戶台處之cpu 14〇2可 至少部分基於自SV接收的信號來估計用戶台之位置。如上 文根據特定實例所說明，CPU 1402亦可經調適以至少部分 基於在第一已接收k號中所偵測的碼相位來判定用於獲得 第二接收信號的碼搜尋範圍。然而，應理解m堇為根 據特定態樣之用於至少部分基於偽距量測值來估計一位 置，判定此等偽距壹測值之定量估計並終止一過程以改良 偽距量測值之準確度的系統之實例，且所主張之標的物不 限於此等態樣。 123967-1000321.doc -35- 1345069 雖然已說明並描述目前認為係實例特徵的特徵，但熟習 此項技術者將瞭解，在不偏離所主張的標的物之情況下， 可進行各種其他修改，且可以等效物替代。此外在不偏 離本文所描述之中心概念的情況下，可進行許多修改以使 特疋清形適合所主張之標的物的教示。因此，意欲所主 張之標的物不限於所揭示之特定實例，而此所主張之標的 物亦可包括屬於附加申請專利範圍之範轉内之所有態樣及 其專效物。 【圖式簡單說明】 圖1A為根據一態樣之衛星定位系統（sps)之示意圖。 圖為說明根據一態樣之已接收〇&gt;^8信號的偽距假設 之時序圖。 圖2展示根據一態樣之能夠藉由量測至太空航行器（sv) 的偽距而判定接收器處之位置的系統之示意圖。 圖3為說明根據一態樣之用於在自sv獲得的信號中減少 模糊性之過程的流程圖。 圖4為說明根據-態樣之自自不同…所獲得之信號得到 的偽距假設之關聯的時序圖。 圖5A為說明根據一替代特徵之自自不同sv所獲得之信 號得到的偽距假設之關聯的時序圖。 圖5B為說明根據-替代特徵之在獲得獲得第二挪信號 時使用對調變第-SPS信號之資料信號的位元邊沿之偵測 的時序圖。 圖6A為說明根據一替代特徵之自自不同sv所獲得之信 123967-1000321.doc •36· 1J45U69 號得到的偽距假設之關聯的時序圖。 β圖68為說明根據-替代特徵t自自$同sv所獲得之信 號得到的偽距假設之關聯的時序圖。 圖6C為說明根據一替代特徵之自自不同sv所獲得之信 號得到的偽距假設之關聯的時序圖。 圖6D為說明根據一替代特徵之自自不同SV所獲得之信 號得到的偽距假設之關聯的時序圖。Pune = One-sided uncertainty of the reference position expressed in units of length. The position of the bit edge of the data signal of the GPS signal received at the reference position as estimated above can be estimated to be paid using pre-detection integration (PDI) with enhanced sensitivity. Received GPS 彳§ number. For example, between bit edges 306 and 312, data signal 302 does not change. Accordingly, a PDI having enhanced sensitivity may be performed on a portion of the received gps signal based at least in part on the estimation of the bit edge 306 of the Galileo signal obtained at the reference location region and the estimate of 312 as described above. According to an alternative feature 'in determining the phase and/or alignment of the bit edges of the Gps data signal received at the reference location region, a receiver can obtain additional information from the Galileo signal received at the reference location to permit Additional initial uncertainty in the timing of receiving the Galileo signal. In detail, it should be observed that the chips in the periodically repeated PN code sequence in the signal from Galileo SV can be encoded as a "data channel" by rate 1/4 Viterbi. On the 4.0 ms epoch, &quot;1&quot; or ·, 〇&quot; to Viterbi encodes a sequence of pn codes transmitted on the 4,000 millisecond epoch. In the example described above, 'the free reference position area is for Galileo. The acquisition of the signal and the one-sided uncertainty is not greater than 2. 〇 milliseconds and the difference estimate e[I] of the one-sided uncertainty t / not more than 〇.5 milliseconds of the timing of the Galileo signal to obtain the modulation Refers to the bit edge of the data k number of the received Gps signal at the location area. However, in an alternative feature, the Viterbi decoding of the Galileo k data channel received at the reference position 123967-1000321.doc -28-1345069 It can enable detection of a bit edge in the GPS signal received at the reference position, wherein the one-sided disparity according to the timing of the '_determined Galileo signal is up to 4 〇 milliseconds. Here, the data signal of the received GPS signal Dimension with Galileo signal The special encoding is 4. 〇 millisecond epoch synchronization. Referring to Fig. 6b, since the GPS and Galileo signals can be synchronized, since it has been received, it can be known that the bit edge 326 of the (k) signal of the received (10) signal is The Viterbi code that has received the Galileo signal is, for example, synchronized from a particular transition to &quot;&quot;. In addition to 'knowing' the timing of the received Galileo signal with sufficient accuracy, the receiver can determine that this special transition from G_£1' is within the (four) millisecond uncertainty range. Therefore, the receiver can then infer the transition. 324 is associated with the beginning of the transmission of a particular data epoch from Galileo sv. Again, the start of the transmission may include the beginning of the week, the beginning of the data frame, the beginning of the data section, etc. due to the emission of the data signal from Galileo. It can be synchronized with the transmission of the data signal from (4), so the receiver can make a specific bit of the specific front edge 324 of the 8 〇 〇 伽 伽 历 历 与 与 调 调 与 与 调 调 调 调 调 调 调 调Edge 326 is associated 'and the difference unilateral uncertainty C7 of the difference estimate EW is no more than 〇5 milliseconds. Yangs, therefore, as explained above, pm ' can be performed on the portion of the received GPS signal for enhancement The sensitivity is obtained, at least in part, based on the estimate of the bit edge 326 of the Galileo k number obtained at the reference location as described above. For purposes of illustration, Figure 6B encodes the Viterbi code. The data of the channel is not the value of "1&quot; and &quot;〇&quot; in the parent cell for 4 milliseconds. However, it should be understood that these values do not have to alternate between consecutive 4 〇 epochs. And the subject matter claimed by 123967-1000321.doc • 29· 1345069 is not limited to this aspect. In still another alternative feature, the GPS receiver can use the information extracted from the channel of the Galileo signal obtained at the reference position. Determining the phase and/or alignment of the bit edges of the GPS data signals received at the reference locations. As illustrated in Figure 6C, the Galileo signal of the channel 4〇6 may overlap the PRN sequence 404 by 25 A sequence of known data repeated over a 1 〇〇 ms period of consecutive 4'0 millisecond epochs is encoded. Here, the data L number 402 of the received Gps signal can be synchronized with the pilot channel 406. Again, it should be observed The 1 〇〇 millisecond period of the pilot channel 4 received at the reference location can be associated with five consecutive 20 millisecond periods of the data signal 402. There is a timing of the received Galileo signal less than 50 milliseconds as determined by the relationship. Side uncertainty (or an uncertainty range of less than 100 milliseconds) enables one of the 100 millisecond periods of the decoded pilot channel to be able to start with the transmission of the Galileo SV2 specific data calendar (such as at the beginning of the week, the data frame) The start of the start of the transmission of the data area ^ and the start of the data is synchronized. Since the transmission of the pilot channel 406 can be synchronized with the transmission of the data signal 4〇2, the receiver can make the loo.o millisecond calendar of the channel 406. The specific front edge 4〇8 of the element is associated with a specific bit edge 412 of the data signal 4〇2 that has received the GPSk number. Therefore, the received Galileo signal can be made by the difference estimate determined according to the relationship (1). A known time in the 1 〇〇 millisecond period of the detected pilot channel is associated with the edge of the received GPS signal, and the one-sided uncertainty v in the difference estimate E[L] is not greater than 〇 5 milliseconds. Furthermore, in the case of determining the edge of the bit in the received GPS number, the pDI can be performed on a portion of the received GPS signal for estimation of the sensitivity on the edge of the bit 123967-1000321.doc 1345069. Get GPS signals between. According to an example (although the claimed subject matter is not limited to this aspect), the detection of the bit edge in the GPS signal received at the reference location can be used to determine the Viterbi coding boundary of the Galileo signal received at the reference location. As described above, for example, it can be known that the specific bit edge in the data signal of the received GPS signal is synchronized with or from the transition of the Viterbi code of the received Galileo signal from &quot;1&quot;丨&quot;to"〇&quot; Similarly, in the case where the one-sided uncertainty of the received GPS signal determined by the root relationship (2) is less than 10 milliseconds, it should be observed that the estimate E[z] from GPS 8乂 to Galileo 8乂If the difference uncertainty is less than 2.0 milliseconds, the specific margin of the measured bit in the data signal of the received GPS signal can be received by the difference estimate E[L] determined according to the relationship (1) above. This transition (Viterbi decoding boundary) in the data channel of the gamma-slight signal is associated. According to the above relationship (3), the uncertainty of the difference is determined. As illustrated in FIG. 6D, for example, in the case where the one-side non-wearing degree of the timing of receiving the GPS signal is less than 1 〇 millisecond, the position of the data signal 4? 2 of the GPS signal 482 received at the reference position is modulated. The detection of the element edge 476 provides an accurate time reference to the Viterbi coded Galileo signal f 478 received at the reference location. Thus, in the case where the two sides are not shown; the degree A is less than 4.0 milliseconds, the transition of the Viterbi coding boundary 484 in the Galileo signal 478 can be uniquely determined. According to an example, the sv visible at a receiver (eg, as indicated in the AA message) may be associated with a search window parameter defining a two-dimensional domain of the code phase and Doppler frequency hypothesis to be searched for the sv. A specific collection is associated. In one embodiment illustrated in FIG. 7, the search window parameters for SV include code phase 123967-1000321.doc -31-1345069 bit search window size WIN_SIZEC/&gt;, code phase window center WIN_CENTCjP, Doppler search Window size WIN_SIZEd〇m and Doppler window center WI^CENT^o/»/» » Η ^ ^ % t ^ ^ IS-801 In the case of the subscriber station in the wireless communication system, these parameters can be The PDE provides an AA message to the subscriber station to indicate. The two-dimensional search space for SV illustrated in Figure 7 shows the code phase axis as a horizontal axis and the Doppler frequency axis as a vertical axis, but this assignment is arbitrary and can be reversed. The center of the code phase search window is called WIN_CENTc/&gt;, and the size of the code phase search window is called WIN_SIZEc/3. The center of the Doppler frequency search window is called WINJENT^^, and the size of the Doppler frequency search window is called WIN-SIZEdo. According to an example, after obtaining the first signal from the first SV, the first and second SVs for the specific time ί may be based, at least in part, on the detected code phase, the receiver position estimate, and the description of the receiver position. The location information determines the WIN_CENTc corpse and WIN_SIZEc/&gt; for obtaining the second signal from the second SV. Here, the search space for obtaining the second signal can be divided into a plurality of sections 1202a, 1202b, 1202c, each of which is characterized by a range of Doppler frequencies and a range of code phases. According to an example, the range of code phases representing the feature of the segment may be equal to the capacity of the channel of the correlator to search for the segment through the primary channel. For example, in a particular instance where the channel capacity is 32 chips, the range of code phases representing the segment features may equally be 32 chips, although it should be understood that other examples are possible. The segments can be overlapped by a specified number of chips to avoid missing peaks occurring at the segment boundaries as illustrated in Figures 123967-1000321.doc - 32-1345069 8. Here, the trailing end of the segment 12〇2&amp; overlaps the front end of the segment 1202b by Δ chips, and the tail of the segment 12〇 2b overlaps with the rhyme of the segment 12 0 2 c by Δ chips. The effective range of the code phase represented by the segment may be smaller than the channel capacity due to the additional term attributed to this overlap. For example, in the case of overlapping by four chips, the effective range of the code phase represented by the segment may be twenty-eight chips. A system for obtaining a signal from a periodic φ repetition of SVi is illustrated in Figure 9 in accordance with a specific example. However, this is only one example of a system capable of obtaining such signals according to a particular example, and other systems may be used without departing from the claimed subject matter. As illustrated in Figure 9 in accordance with a particular example, the system can include a nasal platform including a processor 13A2, a memory 13A4, and a correlator 1306. Correlator 1306 can be adapted to generate a correlation function with a signal provided by a free receiver (not shown) to be processed by processor 13A2 (directly or via memory 1304). The correlator 13〇6 can be implemented in a combination of hardware, software, or a combination of hardware and software. However, these are merely examples of how to implement a correlator according to a particular aspect, and the claimed subject matter is not limited to such aspects. According to an example, memory 1304 can store machine readable instructions that are accessible and executable by processor 1302 to provide at least a portion of a computing platform. Here, processor 1302 in conjunction with such machine readable instructions may be adapted to perform all or part of the process 2 described above with reference to FIG. In a particular example (although the claimed subject matter is not limited to such an aspect), the processor 1302 can instruct the correlator 13〇6 to search for a position determination signal as explained above and a correlation function generated by the free correlator 13〇6. Get 123967-1000321 .doc •33- 1345069 to the measured value. Returning to Figure 10, the radio transceiver 1406 can be adapted to modulate an RF carrier signal having fundamental frequency information (such as voice or data) onto an RF carrier and demodulate the modulated RF carrier to obtain the fundamental frequency. News. Antenna 1410 can be adapted to transmit a modulated RF carrier over a wireless communication link and to receive a modulated RF carrier over a wireless communication link. The baseband processor 1408 can be adapted to provide baseband information from the CPU 1402 to the transceiver 1406 for transmission via a wireless communication link. Here, the CPU 1402 can obtain the baseband information from an input device in the user interface 1416. The baseband processor 1408 can also be adapted to provide baseband information from the transceiver 1406 to the CPU 1402 for transmission via an output device in the user interface 1416. The user interface 1416 can include input or output such as voice or data. Multiple devices of user information. Such devices may include, for example, a keyboard 'display screen, a microphone, and a speaker. The SPS Receiver (SPS Rx) 1412 can be adapted to &apos;demodulate the transmission from sv and provide the demodulated information to correlator 1418. The correlation 1418 can be adapted to obtain information about the information provided by the free receiver 1412. For example, for a given pN code, correlator 1418 can generate a correlation function that is defined over a range of code phases that set a code phase search window and within the range of Doppler frequency hypotheses as explained above. . Similarly, individual correlations can be performed based on defined coherent and non-coherent integration parameters. Correlator 1418 can also be adapted to derive a correlation function associated with the pilot from information associated with the pilot signals provided by transceivers 14A6. This information can be used by the 123967-1000321.doc subscriber station to obtain wireless communication services. The channel decoding @142G can be adapted to the solution received from the baseband SS14G8 into the base source bit. The channel symbol contains a convolutional coder, and the instance command 'this channel decoder can contain a one-dimensional ratio decoder. In a second example where serial or parallel concatenation of convolutional codes is included, channel decoder 142G may include a thirsty wheel decoder (10) bo d(10) der). J: The memory 1404 can be adapted to store machine readable instructions that can be executed to perform a process, an instance, an embodiment, or one or more of its examples that have been described or suggested. Cpu 14〇2 can be adapted to access and execute such machine readable instructions. By executing such machine readable instructions, u 1402 may refer to the non-correlator 1418 performing a search using the particular search slabs at steps 2〇2 and 2〇4, analyzing the CM correlation function provided by correlator i 4 i 8 Its bee value is measured and it is determined whether the estimation of the position is sufficiently accurate. However, these are only examples of tasks that can be performed by the CPU in a particular aspect, and the claimed subject matter is not limited to such aspects. In a particular example, as explained above, the CPU 14 at the subscriber station can estimate the location of the subscriber station based at least in part on the signals received from the SV. As explained above in accordance with certain examples, CPU 1402 can also be adapted to determine a code search range for obtaining a second received signal based at least in part on the code phase detected in the first received k number. However, it should be understood that m堇 is based on a particular aspect for estimating a position based at least in part on the pseudorange measurement, determining a quantitative estimate of the pseudorange measurements and terminating a process to improve the pseudorange measurement. Examples of systems of accuracy, and the subject matter claimed is not limited to such aspects. </ RTI> </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; Can be replaced by an equivalent. In addition, many modifications may be made to adapt the invention to the teachings of the claimed subject matter without departing from the central concepts described herein. Therefore, the subject matter of the subject matter is not limited to the specific examples disclosed, and the claimed subject matter may also include all aspects and their specifics within the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1A is a schematic diagram of a satellite positioning system (sps) according to an aspect. The figure is a timing diagram illustrating the pseudorange hypothesis of a received 〇&gt;^8 signal according to an aspect. 2 shows a schematic diagram of a system that can determine the position of a receiver by measuring the pseudorange to the spacecraft (sv) according to an aspect. Figure 3 is a flow chart illustrating the process for reducing ambiguity in signals obtained from sv, according to an aspect. Fig. 4 is a timing chart showing the correlation of the pseudorange assumptions obtained from the signals obtained from the different states. Figure 5A is a timing diagram illustrating the association of pseudorange hypotheses derived from signals obtained from different svs according to an alternative feature. Figure 5B is a timing diagram illustrating the detection of bit edges of a data signal for a modulated SP-S signal, obtained in accordance with an alternative feature. Figure 6A is a timing diagram illustrating the association of pseudorange hypotheses obtained from letters 123967-1000321.doc • 36·1J45U69 obtained from different svs according to an alternative feature. Figure 68 is a timing diagram illustrating the association of pseudorange hypotheses derived from the signals obtained from $sv with sv based on the alternative feature t. Figure 6C is a timing diagram illustrating the association of pseudorange hypotheses derived from signals obtained from different svs according to an alternative feature. Figure 6D is a timing diagram illustrating the association of pseudorange hypotheses derived from signals obtained from different SVs in accordance with an alternate feature.

圖7為根據一態樣之待搜尋以用於偵測自太空航行器所 發射的信號之二維域之示意圖。 圖8說明根據一態樣之用搜尋窗中之指定數目的碼片進 行的重疊以避免遺漏在區段邊界處出現的峰值。 圖9為根據一態樣之用於處理信號以判定位置的系統之 示意圖。Figure 7 is a schematic illustration of a two-dimensional domain to be searched for detecting signals transmitted from a spacecraft based on an aspect. Figure 8 illustrates the overlap performed by a specified number of chips in a search window in accordance with an aspect to avoid missing peaks occurring at the segment boundaries. Figure 9 is a schematic illustration of a system for processing signals to determine position in accordance with an aspect.

圖10為根據一態樣之用戶 【主要元件符號說明】 台的示意圖。 100 用戶台 102a, 102b, 102c, 102d 衛星 104 實體 152 偽距假設 154 資料信號 156 偽距假設 164 參考位置區域 166 參考位置中心 168 地球表面 123967-1000321.doc -37- 1345069Fig. 10 is a schematic diagram of a user [main component symbol description] according to an aspect. 100 subscriber station 102a, 102b, 102c, 102d satellite 104 entity 152 pseudorange hypothesis 154 data signal 156 pseudorange hypothesis 164 reference location area 166 reference location center 168 earth surface 123967-1000321.doc -37- 1345069

250 偽距假設 252 偽距假設 254 偽距假設 256 偽距假設 280 偽距假設 284 偽距假設 286 偽距假設 290 GPS信號 292 資料信號 294 伽利略信號 296 偽距 302 GPS資料信號 304 前邊沿 306, 312 位元邊沿 308 伽利略信號 310 PRN碼 322 資料信號 324 前邊沿 326, 332 位元邊沿 330 資料通道 402 資料信號 404 PRN序列 406 引示通道 408, 410 前邊沿 123967-1000321.doc ·38· 1345069 412 位元邊沿 472 資料信號 476 位元邊沿 478 伽利略信號 482 GPS信號 484 維特比編碼邊界 1202a, 1202b, 1202c 區段 1302 處理器 1304 記憶體 1306 相關器 1402 CPU 1404 記憶體 1406 收發器 1408 基頻處理器 1410, 1414 天線 1412 SPS接收器 1416 使用者介面 1418 相關器 1420 通道解碼器 E[I] 差估計 SV1 空間飛行器1 SV2 空間飛行器2 u不 痛定度範圍 WIN_CENTCP 碼相位窗中心 123967-1000321.doc -39- 1345069 WIN_CENT DOPP WIN_SIZECP WIN_ SIZE D〇pp μ 多普勒窗中心 碼相位搜尋窗尺寸 多普勒搜尋窗尺寸 雙側不確定度範圍250 pseudorange hypothesis 252 pseudorange hypothesis 254 pseudorange hypothesis 256 pseudorange hypothesis 280 pseudorange hypothesis 284 pseudorange hypothesis 286 pseudorange hypothesis 290 GPS signal 292 data signal 294 Galileo signal 296 pseudorange 302 GPS data signal 304 front edge 306, 312 Bit Edge 308 Galileo Signal 310 PRN Code 322 Data Signal 324 Front Edge 326, 332 Bit Edge 330 Data Channel 402 Data Signal 404 PRN Sequence 406 Lead Channel 408, 410 Front Edge 123967-1000321.doc ·38· 1345069 412 Bit Element edge 472 data signal 476 bit edge 478 Galileo signal 482 GPS signal 484 Viterbi code boundary 1202a, 1202b, 1202c Section 1302 Processor 1304 Memory 1306 Correlator 1402 CPU 1404 Memory 1406 Transceiver 1408 Baseband processor 1410 , 1414 Antenna 1412 SPS Receiver 1416 User Interface 1418 Correlator 1420 Channel Decoder E[I] Difference Estimation SV1 Spacecraft 1 SV2 Space Vehicle 2 u No Pain Range WIN_CENTCP Code Phase Window Center 123967-1000321.doc -39 - 1345069 WIN_CENT DOPP WIN_SIZECP WIN_ SIZE D pp μ Doppler window center code phase search window size Doppler search window size sided uncertainty range

123967-1000321.doc -40- (§)123967-1000321.doc -40- (§)

Claims (1)

1345069 十、申請專利範圍： ι_ 一種方法，其包含： 使自一在一參考位置處自一第一太空航行器（sv)所獲 知之第一信號得到的第一偽距假設與自一在該參考位置 處自 第二SV所接收之一第二信號得到的一或多個第二 偽距假設相關聯，該相關聯係至少部分基於一在—自該 參考位置至該第—SV之第一距離與一自該參考位置至該 第二SV之第二距離之間的經估計之差；及 至少部分基於該等相關聯之第一偽距假設來減少—調 _ 變該第一信號的資料信號之一位元邊沿之一相位的一模 糊*生，其中該第一信號係根據一第一格式而被傳輸且該 第一化號係根據一不同於該第一格式的第二格式而被 輸。 2. 如請求項！之方法，其進一步包含至少部分基於該第一 SV及該第二8乂之位置來判定該經估計之差。 3. 如明求項2之方法’其進一步包含接收自一獲得辅助訊 息獲得的指示該第—〜及該第二SV之位置的資訊。 4. 如請求们之方法，其中該第二信號係以一重複資料序 列來編碼，且其中該方法進一步包含： 對該來自該第二信號之至少一部分的重複資料序列進 行解碼；及 至少部分基於該經解碼之資料序列來消 距假設中之至少一些假設。 乐一妈 5.如請求項4之方法’其中該減少該模糊性進一步包含： 123967-1000321.doc 將該等相關聯之第—偽距假設限於與在該消除之後的 任何幻餘第一偽距假設相關聯的第一偽距假設。 6·如請求項1之方法，其中該第二信號係以一已知資料序 列來編碼’且其中該方法進一步包含： 債測該已知資料序列相對於一至該第二SV之真實偽距 的一相位對準’且其中該相關聯進一步包含使至該第二 SV之該真實偽距與該等第一偽距假設相關聯。 如巧求項1之方法，其中該第一 SV包含一在一 GPS集群 中之衛星，且該第二§乂包含一在一伽利略集群（Galileo constellation)中之衛星。 8. —種方法，其包含： 至少部分基於一在一在一參考位置處接收之第一信號 中偵測的第一碼相位來判定自該參考位置至一第一太空 航行器（SV)的複數個第一偽距假設，該第一信號係由一 資料信號來調變；及 至少部分基於一在一在該參考位置處自一第二sv所接 收的第二信號令偵測之第二碼相位來減少一與一在關於 該資料信號的該等第-爲距假設t之真實偽距相關聯的 模糊性，其中該第一信號係根據一第一格式而被傳輸且 該第二信號係根據一不同於該第一格式的第二格式而被 傳輸。 9.如請求項8之方法，其中該第二信號係以一週期性重複 之隨機碼序列來編碼，且其中該減少該模糊性進一步包 含： 123967-1000321.doc 1345069 ，至少部分基於該第二碼相位來判定自該參考位置至該 第二sv的一或多個第二偽距假設；及 • 使該等第一假設與該等第二假設相關聯。 10.如明求項9之方法，其中該使該等第一假設與該等第二 假設相關聯進一步包含至少部分基於在一自該參考位置 至該第一 SV之距離與一自該參考位置至該第二SV之距 離之間的-差的—估計而使該等第—假設與豸等第二假 ^ 設相關聯。 η·如明求項10之方法，其中該估計係至少部分基於該等sv 之位置。 12. ^請求項9之方法，其中該第二信號係以資訊加以調 變，且其中該減少該模糊性進一步包含至少部分基於該 資訊來消除該第二偽距假設。 13. 如明求項12之方法，其中該資訊包含一週期性重複之資 料序列。 鲁 月求項13之方法，其中該資訊包含-伽利略引示通 道。 。青长項8之方法’其中根據—第—GNSS發射該第一信 號’且根據一不同於該第一GNSS之第二〇卿發射 信號。 16·如請求項15之方法，其中該第-SV屬於一GPS集群，且 該第二sv屬於一伽利略集群。 17. —種方法，其包含： 第衛星定位系統接收一第一太空航行器（sv)信 123967-1000321.doc 1345069 號；及 至^郤刀基於該已接收之第一 sv信號中的資訊來減少 調變自—第二衛星定位系統所接收之第二sv信號的 貝料k號之一位元邊沿模糊性，其中該第一 §、信號係根 據一第一格式而被傳輸且該第二sv信號係根據一不同於 該第一格式的第二格式而被傳輸。 18. 如。月求項17之方法，其中該資訊包含一在該第一 sv信號 中所偵測之碼相位。 19. 如明求項18之方法，其中該減少該位元邊沿模糊性進一鲁 步包含： 至少部分基於該碼相位判定—或多個第__偽距假設；及 使該或該等第一偽距假設與複數個與該第二sv信號相 儲存媒體，該儲存媒體包含儲存於其上之機器可讀1345069 X. Patent Application Range: ι_ A method comprising: a first pseudorange hypothesis obtained from a first signal obtained from a first spacecraft (sv) at a reference location The reference location is associated with one or more second pseudorange hypotheses derived from a second signal received by the second SV, the associated association being based at least in part on a first distance from the reference location to the first SV And an estimated difference between the reference position and the second distance from the second SV; and at least in part based on the associated first pseudorange hypothesis to reduce the data signal of the first signal a fuzzy one of the phases of one of the bit edges, wherein the first signal is transmitted according to a first format and the first number is transmitted according to a second format different from the first format . 2. As requested! The method further comprising determining the estimated difference based at least in part on the locations of the first SV and the second 8乂. 3. The method of claim 2, further comprising receiving information indicative of the location of the first to the second SV obtained from obtaining the auxiliary message. 4. The method of claimant, wherein the second signal is encoded in a repeating data sequence, and wherein the method further comprises: decoding the repeated data sequence from at least a portion of the second signal; and based at least in part on The decoded data sequence is used to at least some of the assumptions of the distance hypothesis.乐一妈 5. The method of claim 4, wherein the reduction of the ambiguity further comprises: 123967-1000321.doc limiting the associated first-pseudorange hypothesis to any imaginary first pseudo after the elimination The first pseudorange hypothesis associated with the hypothesis. 6. The method of claim 1, wherein the second signal is encoded in a sequence of known data 'and wherein the method further comprises: determining a true pseudorange of the known data sequence relative to one to the second SV A phase alignment 'and wherein the correlating further comprises associating the true pseudorange to the second SV with the first pseudorange hypotheses. The method of claim 1, wherein the first SV comprises a satellite in a GPS cluster, and the second § includes a satellite in a Galileo constellation. 8. A method comprising: determining, based at least in part on a first code phase detected in a first signal received at a reference location, from the reference location to a first space vehicle (SV) a plurality of first pseudoranges, the first signal being modulated by a data signal; and based at least in part on a second signal detected at a reference position from a second sv a code phase to reduce ambiguity associated with a true pseudorange of the first-to-distance hypothesis t with respect to the data signal, wherein the first signal is transmitted according to a first format and the second signal It is transmitted according to a second format different from the first format. 9. The method of claim 8, wherein the second signal is encoded in a periodically repeated random code sequence, and wherein the reducing the ambiguity further comprises: 123967-1000321.doc 1345069, based at least in part on the second The code phase determines one or more second pseudorange hypotheses from the reference position to the second sv; and • correlates the first hypotheses with the second hypotheses. 10. The method of claim 9, wherein the associating the first hypotheses with the second hypotheses further comprises at least partially based on a distance from the reference location to the first SV and a reference from the reference location The estimation of the difference between the distances to the second SV causes the first hypotheses to be associated with a second hypothesis such as 豸. η. The method of claim 10, wherein the estimating is based at least in part on the locations of the svs. 12. The method of claim 9, wherein the second signal is modulated with information, and wherein reducing the ambiguity further comprises eliminating the second pseudorange hypothesis based at least in part on the information. 13. The method of claim 12, wherein the information comprises a periodically repeated sequence of data. Lu Yue's method of claim 13, wherein the information includes a Galileo priming channel. . The method of the term 8 wherein the first signal is transmitted according to the - GNSS and the signal is transmitted according to a second 不同于 different from the first GNSS. The method of claim 15, wherein the first-SV belongs to a GPS cluster, and the second sv belongs to a Galileo cluster. 17. A method comprising: receiving, by a satellite positioning system, a first space vehicle (sv) letter 123967-1000321.doc 1345069; and until the knife is reduced based on information in the received first sv signal Modulating the edge ambiguity of a bit k of the second sv signal received by the second satellite positioning system, wherein the first §, the signal is transmitted according to a first format and the second sv The signal is transmitted according to a second format different from the first format. 18. For example. The method of claim 17, wherein the information includes a code phase detected in the first sv signal. 19. The method of claim 18, wherein the reducing the edge edge ambiguity further comprises: at least in part based on the code phase decision - or a plurality of __ pseudorange hypotheses; and causing the or the first a pseudorange hypothesis and a plurality of storage media associated with the second sv signal, the storage medium comprising a machine readable thereon 關聯之第二偽距假設相關聯。 20. —種物品，其包含：The associated second pseudorange hypothesis is associated. 20. An item comprising: 指令’若由-計算平台執行，則該等機器可讀指令經調 適以使該計舁平台執行以下動作： 使自在參考位置處自一第一太空航行器（sv)獲 得之第-信號得到的第—偽距假設與自—在該參考位 置處自-第二SV接收之第二信號得到的一或多個第二 爲距假設相關聯，該等第-與第二偽距假設之間的該 關聯係至少部分基於在一自該參考位置至該第一…之 第-距離與-自該參考位置至該第二sv之第二距離之 間的一經估計之差；及 123967-1000321.doc ,4. CS) 1345069 至少部分基於該等相關聯之第一偽距假設來減少一調 變該第一信號之資料信號的一相位之一模糊性，其中該 第一信號係根據一第一格式而被傳輸且該第二信號係根 據一不同於該第一格式的第二格式而被傳輸。 21. —種物品，其包含： 一儲存媒體，該儲存媒體包含儲存於其上之機器可讀 指令，若由一計算平台執行，則該等機器可讀指令經調 適以使該計算平台執行以下動作： 至少部分基於一在一在一參考位置處接收的第一信號 _ 中所偵測之第一碼相位來判定自該參考位置至第一太空 航行器（SV)的複數個第一偽距假設，該第一信號係由一 資料信號來調變；及 至少部分基於一在一在該參考位置處自一第二sv所接 收之第二信號中偵測的第二碼相位來減少一與一關於該 資料信號的該等第-偽距假設中之真實偽距相關聯的模 糊性，其中該第一信號係根據一第一格式而被傳輪且該 第二信號係根據-不同於該第一格式的第二格式而被傳籲 輸。 22. —種物品，其包含： -儲存媒體’該儲存媒體包含料於其上之機器可讀 指令’若由一計算平台執行，則今蓉地 仃則这等機器可讀指令經調 適以使該計算平台執行以下動作： 定位系統接收的第一 ;及 至少部分基於一自一第一衛星 太空航行器（SV)信號來獲取資訊 123967-1000321.doc 一至少部分基於該已接收之第一sv信號中之資訊來減少 調變自一第一衛星定位系統接收之第二§乂信號的資 料^號之-位疋邊沿模糊性，其中該帛—信號係根據 A第格式而被傳輸且該第二SV信號係根據一不同於該 第一格式的第二格式而被傳輸。 23. —種用戶單元，其包含： 接收器，該接收器接收一包含指示第一及第二太空 &quot;亍器（SV)之位置之資訊的獲得輔助（aa)訊息；及 處理器以存取該資訊，其指示該等位置以： 至少部分基於該資訊來估計一在一自一參考位置至 該第一 sv之第一距離與一自該參考位置至該第二sv 之第&quot;一距離之間的差； 至少部分基於該經估計之差來使自一在一參考位置 處自該第一 SV獲得之第一信號所得到的第一偽距假設 與自一在該參考位置處自該第二SV獲得之第二信號所 得到的一或多個第二偽距假設相關聯；及 至少部分基於該等相關聯之第一偽距假設來減少一調 變忒第一信號的資料信號之一位元邊沿之一相位的一模 糊性，其中該第一信號係根據一第一格式而被傳輸且該 第二信號係根據一不同於該第一格式的第二格式而被傳 輸。 24. 如請求項23之用戶單元，該接收器經由一陸上無線通信 鍵路接收該AA訊息。 25. —種用戶單元，其包含： 123967-1000321.doc 1345069 一接收器，該接收器接收一包含指示第一及第二太空 航行器（SV)之位置之資訊的獲得輔助（AA)訊息；及 一處理器以存取該資訊，其指示該等位置以： 至少部分基於一在第一信號中所偵測之第一碼相位 來判定複數個第一偽距假設，該第一信號係由—資料 信號來調變；及 至少部分基於該資訊及一在第二信號中所偵測之第二 碼相位來減少一與關於該資料信號之該等第一偽距假設 中的一真實偽距相關聯的模糊性，其中該第一信號係根 據一第一格式而被傳輸且該第二信號係根據一不同於該 第一格式的第二格式而被傳輸。 26. 如請求項25之用戶單元，該接收器經由一陸上無線通信 鏈路接收該AA訊息。 27. —種用戶單元，其包含： 一接收器，該接收器接收一包含指示第一及第二太空 航行器（SV)之位置之資訊的獲得輔助（AA)訊息；及 一處理器以存取該資訊，其指示該等位置且接收第一 SV信號及第二SV信號，及至少部分基於該已接收之第 一 SV信號t之資訊及指示該等位置的該資訊來減少一調 變該第二已接收之sv信號的資料信號之一位元邊沿模糊 性，其中該第一信號係根據一第—格式而被傳輸且該第 二信號係根據一不同於該第一格式的第二格式而被傳 輸。 28. 如請求項27之用戶單元’該接收器經由一陸上無線通信 123967-1000321.doc 1345069 鏈路接收該AA訊息。 29. —種系統，其包含： 一位置判定實體（PDE);及 一用戶單元，該用戶單元經調適以： 經由一陸上無線通信鏈路自該PDE接收一獲得辅助 (ΑΑ)訊息’該ΑΑ訊息包含指示第一及第二太空航行 器（SV)之位置的資訊； 至少部分基於該資訊來估計一在一自一參考位置至 該第一 SV之第一距離與一自該參考位置至該第二籲 之第二距離之間的差； 至少部分基於該經估計之差來使自一在一參考位置 處自該第一SV所獲得之第一信號得到的第一偽距假設 與自一在該參考位置處自該第二SV所接收之第二信號 得到的一或多個第二偽距假設相關聯；及 至少部分基於該等相關聯之第一偽距假設來減少一 至該第一 SV之真實偽距相對於一調變該第一信號之資 · 料k號的一位元邊沿之一對準的一模糊性，其中該第 一信號係根據一第一格式而被傳輸且該第二信號係根 據一不同於該第一格式的第二格式而被傳輸。 3 0. —種系統，其包含： 一位置判定實體（PDE);及 一用戶單元’該用戶單元經調適以： 經由一陸上無線通信鏈路自該1&gt;1)£接收一獲得輔助 (AA)訊息，該AA訊息包含指示第一及第二太空航行 123967-1000321.doc -8 -The instructions 'when executed by the computing platform, the machine readable instructions are adapted to cause the computing platform to perform the following actions: obtaining the first signal obtained from a first space vehicle (sv) at the reference location a first pseudorange hypothesis and one or more second derived from the second signal received at the reference position from the second SV are associated with a hypothesis between the first and second pseudorange hypotheses The relationship is based at least in part on an estimated difference between a first distance from the reference position to the first ... and a second distance from the reference position to the second sv; and 123967-1000321.doc , 4. CS) 1345069 reducing, based at least in part on the associated first pseudorange hypothesis, a ambiguity of a phase of a data signal modulating the first signal, wherein the first signal is based on a first format And being transmitted and the second signal is transmitted according to a second format different from the first format. 21. An article comprising: a storage medium comprising machine readable instructions stored thereon, if executed by a computing platform, the machine readable instructions are adapted to cause the computing platform to perform the following Action: determining a plurality of first pseudoranges from the reference location to the first space vehicle (SV) based at least in part on a first code phase detected in the first signal _ received at a reference location Assume that the first signal is modulated by a data signal; and is based at least in part on a second code phase detected in a second signal received from a second sv at the reference position to reduce a a ambiguity associated with the true pseudorange in the pseudo-pseudorange hypotheses of the data signal, wherein the first signal is transmitted according to a first format and the second signal is based on - different from the The second format of the first format is advertised. 22. An article comprising: - a storage medium 'the machine readable instructions onto which the storage medium is contained', if executed by a computing platform, such machine readable instructions are adapted such that The computing platform performs the following actions: the first received by the positioning system; and based at least in part on obtaining information from a first satellite space vehicle (SV) signal 123967-1000321.doc based at least in part on the received first sv Information in the signal to reduce edge ambiguity of the data of the second § 接收 signal received from a first satellite positioning system, wherein the 帛-signal is transmitted according to the A format and the The two SV signals are transmitted according to a second format different from the first format. 23. A subscriber unit, comprising: a receiver, the receiver receiving an access assistance (aa) message including information indicating locations of the first and second space &quot;SV; and a processor Taking the information, indicating the locations to: estimate a first distance from a reference position to the first sv and a first from the reference position to the second sv based at least in part on the information a difference between the distances; based at least in part on the estimated difference, the first pseudorange hypothesis obtained from the first signal obtained from the first SV at a reference position is from the reference position And one or more second pseudorange hypotheses obtained by the second signal obtained by the second SV are associated; and reducing the data signal of the first modulated signal based at least in part on the associated first pseudorange hypothesis A ambiguity of a phase of one of the bit edges, wherein the first signal is transmitted according to a first format and the second signal is transmitted according to a second format different from the first format. 24. The subscriber unit of claim 23, the receiver receiving the AA message via a landline wireless communication link. 25. A subscriber unit comprising: 123967-1000321.doc 1345069 a receiver that receives an Acknowledgement (AA) message including information indicative of a location of the first and second space vehicles (SVs); And a processor for accessing the information, indicating the locations to: determine a plurality of first pseudorange hypotheses based at least in part on a first code phase detected in the first signal, the first signal being - a data signal to be modulated; and based at least in part on the information and a second code phase detected in the second signal to reduce a true pseudorange in the first pseudorange hypothesis regarding the data signal Associated ambiguity, wherein the first signal is transmitted according to a first format and the second signal is transmitted according to a second format different from the first format. 26. The subscriber unit of claim 25, the receiver receiving the AA message via a landline wireless communication link. 27. A subscriber unit comprising: a receiver receiving an Auxiliary (AA) message including information indicative of a location of a first and a second space vehicle (SV); and a processor for storing Taking the information, indicating the locations and receiving the first SV signal and the second SV signal, and reducing the modulation based at least in part on the information of the received first SV signal t and the information indicating the locations One bit edge ambiguity of the data signal of the second received sv signal, wherein the first signal is transmitted according to a first format and the second signal is according to a second format different from the first format And being transmitted. 28. The subscriber unit of claim 27, the receiver receiving the AA message via a landline wireless communication 123967-1000321.doc 1345069 link. 29. A system comprising: a location decision entity (PDE); and a subscriber unit adapted to: receive an auxiliary (ΑΑ) message from the PDE via a landline wireless communication link. The message includes information indicating the locations of the first and second space vehicles (SV); based at least in part on the information, estimating a first distance from a reference position to the first SV and a reference from the reference position to the a difference between the second distances of the second call; the first pseudorange hypothesis obtained from the first signal obtained from the first SV at a reference position based at least in part on the estimated difference Relating one or more second pseudorange hypotheses obtained from the second signal received by the second SV at the reference location; and reducing one to the first based at least in part on the associated first pseudorange hypothesis a ambiguity in which the true pseudorange of the SV is aligned with respect to a one-bit edge of the resource k of the first signal, wherein the first signal is transmitted according to a first format and the The second signal is different from The second format of the first format is transmitted. A system comprising: a location decision entity (PDE); and a subscriber unit adapted to: receive an assistance from the 1&gt; 1) £ via a landline wireless communication link (AA) ) message that the AA message contains instructions for the first and second space navigation 123967-1000321.doc -8 - 器（sv)之位置的資訊； 至少部分基於一在一參考位置處接收之第一信號中 所偵測之第一碼相位來判定自該參考位置至該第一太 空航行器（SV)的複數個第一偽距假設，該第一信號係 由一資料信號來調變；及 至少部分基於一在一在該參考位置處自一第二SV接 收之第二信號中所偵測的第二碼相位來減少一與關於 該資料信號之該等第一偽距假設中之一真實偽距之一 對準相關聯的模糊性，其中該第一信號係根據一第一 格式而被傳輸且該第二信號係根據一不同於該第一格 式的第二格式而被傳輸。 3 1. —種系統，其包含： 一位置判定實體（PDE);及 一用戶單元，該用戶單元經調適以： 經由一陸上無線通信鏈路自該PDE接收一獲得輔助 (AA)訊息，該AA訊息包含指示第一及第二太空航行 器（SV)之位置的資訊，該第一 SV係來自一第一衛星定 位系統（SPS)且一第二SV係來自一第二SPS ; 接收一來自該第一 SV之第一 SV信號及一來自該第 二SV之第二SV信號；及 至少部分基於該第一已接收之SV信號中之資訊及該 指示該第一 SV及該第二SV之該等位置的資訊來減少 一調變該第二已接收SV信號的資料信號之一位元邊沿 模糊性’其中該第一信號係根據一第一格式而被傳輸 123967-1000321.doc •9· 1345069 且該第二信號係根據一不同於該第一格式的第二格式 而被傳輸。 32. —種方法，其包含： 在一參考位置處獲得一第一導航信號； 估計一調變一在該參考位置處所接收之第二導航信號 的資料信號之一位元邊沿的時序；及 至少部分基於該位元邊沿之該經估計之時序來執行預 先偵測積分以獲得該第二導航信號之一間隔内之該第二 導航信號i 守脱信鈮係由 33·如請求項32之方法，其中該第 空航行器（sv)發射且該第二導航信號係由一第二sv發 射，其中該位元邊沿與該第一導航信號之一已知時刻同 步，且其中該估計該位元邊沿之該時序進一步包含至少 部分基於一在一自該參考位置至該第一 sv之第一距離與 自4參考位置至—第二sv之第二距離之間的經估計之 差而使該已知時刻與該位元邊沿相關聯。 34.如請求項32之方法，苴中 甲忑估计s亥位疋邊沿之該時序 一步包含： 對一調變該第— 解碼；及 導航信號的交替維特比編碼信號進行 35. 使該經解碼之交替 邊沿相關聯。 如請求項32之方法， 一步包含： 維特比編碼信號之一轉變與該位元 其中該估計該位元邊沿之該時序進 123967-1000321.doc 1345069 對一調變該第一導航信號之重複資料序列進行解碼；及 使該第二信號中之該位元邊沿與該經解碼之資料序列 之一時刻相關聯。 36. 如請求項32之方法，其中該第一導航信號係自一為一伽 利略集群之一成員的太空航行器（sv)發射，且該第二導 航信號係自一為一 GPS集群之一成員的SV發射。 37. —種方法，其包含： 判定一調變一在一參考位置處接收之第一導航信號的 資料信號之一位元邊沿的時序；及 至少部分基於該位元邊沿之該時序來判定一調變一在 該參考位置處接收之第二導航信號的交替維特比編碼信 號中之轉變的時序。 38.Information of the position of the device (sv); determining the plural from the reference position to the first space vehicle (SV) based at least in part on the first code phase detected in the first signal received at a reference location The first pseudorange assumes that the first signal is modulated by a data signal; and based at least in part on a second code detected in a second signal received from a second SV at the reference position Phase reducing a ambiguity associated with one of the true pseudoranges of the first pseudorange hypotheses regarding the data signal, wherein the first signal is transmitted according to a first format and the The two signals are transmitted according to a second format different from the first format. 3 1. A system comprising: a location decision entity (PDE); and a subscriber unit adapted to: receive an assist (AA) message from the PDE via a landline wireless communication link, The AA message contains information indicating the locations of the first and second space vehicles (SV) from a first satellite positioning system (SPS) and a second SV system from a second SPS; a first SV signal of the first SV and a second SV signal from the second SV; and based at least in part on information in the first received SV signal and the indication of the first SV and the second SV Information of the locations to reduce a bit edge ambiguity of a data signal of the second received SV signal. wherein the first signal is transmitted according to a first format 123967-1000321.doc •9· 1345069 and the second signal is transmitted according to a second format different from the first format. 32. A method, comprising: obtaining a first navigation signal at a reference position; estimating a timing of a bit edge of a data signal of a second navigation signal received at the reference position; and at least Performing pre-detected integration based on the estimated timing of the edge of the bit to obtain the second navigation signal i in the interval between the second navigation signal and the method of claim 32 Wherein the first air vehicle (sv) transmits and the second navigation signal is transmitted by a second sv, wherein the bit edge is synchronized with a known time of the first navigation signal, and wherein the bit is estimated The timing of the edge further includes at least in part based on an estimated difference between a first distance from the reference position to the first sv and a second distance from the 4 reference position to the second sv The known moment is associated with the edge of the bit. 34. The method of claim 32, wherein the step of estimating the edge of the s 疋 包含 包含 包含 包含 包含 包含 包含 该 对 对 对 对 该 该 该 该 该 该 该 该 该 该 及 及 及 及 及 该 及 及 及 及 及 及 及 及 及 及 及 及 及 及Alternate edges are associated. The method of claim 32, the one step comprising: converting one of the Viterbi coded signals to the bit, wherein the timing of estimating the edge of the bit is entered into 123967-1000321.doc 1345069 to modify the duplicate data of the first navigation signal The sequence is decoded; and the bit edge of the second signal is associated with one of the decoded data sequences. 36. The method of claim 32, wherein the first navigation signal is transmitted from a space vehicle (sv) that is a member of a Galileo cluster, and the second navigation signal is from a member of a GPS cluster SV launch. 37. A method, comprising: determining a timing of a bit edge of a data signal of a first navigation signal received at a reference position; and determining a timing based at least in part on the timing of the edge of the bit The timing of the transition in the alternating Viterbi encoded signal of the second navigation signal received at the reference location is modulated. 38. 39. 如請求項37之方法，其中該第一導航信號係由一第一太 空航行器（sv)發射且該第二導航信號係由一第二3¥發 射’且其中該判定該等轉變之該時序進一步包含至少部 分基於一在一自該參考位置至該第一SV之第一距離與一 自6玄參考位置至一第二SV之第二距離之間的經估計之差 而使该位70邊沿之該時序與該等轉變之該時序相關聯。 如β求項38之方法，其中該第一 sv為一 Gps集群之一成 員，且該第二SV為一伽利略集群之一成員。 123967-1000321.doc 1345069 七、指定代表圖： (一) 本案指定代表圖為：第（3)圖。 (二) 本代表圖之元件符號簡單說明： (無元件符號說明） • 八、本案若有化學式時，請揭示最能顯示發明特徵的化學式： (無） 123967-1000321.doc39. The method of claim 37, wherein the first navigation signal is transmitted by a first space vehicle (sv) and the second navigation signal is transmitted by a second 3¥ and wherein the determining is such a transition The timing further includes at least partially determining the bit based on an estimated difference between the first distance from the reference position to the first SV and a second distance from the 6th reference position to a second SV This timing of the 70 edges is associated with the timing of the transitions. A method of β, wherein the first sv is a member of a Gps cluster and the second SV is a member of a Galileo cluster. 123967-1000321.doc 1345069 VII. Designated representative map: (1) The representative representative of the case is: (3). (2) A brief description of the symbol of the representative figure: (No component symbol description) • 8. If there is a chemical formula in this case, please disclose the chemical formula that best shows the characteristics of the invention: (none) 123967-1000321.doc