JPS5842980B2 - Transmitting/receiving device - Google Patents
Transmitting/receiving deviceInfo
- Publication number
- JPS5842980B2 JPS5842980B2 JP53072559A JP7255978A JPS5842980B2 JP S5842980 B2 JPS5842980 B2 JP S5842980B2 JP 53072559 A JP53072559 A JP 53072559A JP 7255978 A JP7255978 A JP 7255978A JP S5842980 B2 JPS5842980 B2 JP S5842980B2
- Authority
- JP
- Japan
- Prior art keywords
- transmitting
- standby monitoring
- circuit
- signal
- receiving device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Transceivers (AREA)
Description
【発明の詳細な説明】
この発明は、無線通信系に対する有効な妨害信号の送出
手段をもつ送受信装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a transmitting/receiving device having means for transmitting an effective interference signal to a wireless communication system.
第１図は従来のこの種の送受信装置の一例を示すブロッ
ク結線図であり、１は対象無線信号を受信する受信空中
線、２はこの受信空中線１で捕捉した電波を増幅検出す
る受信回路、３は妨害電波を送出する送信回路、４はこ
の送信回路３の出力を放射する送信空中線、５はクロッ
ク信号を発生するクロック発生回路、６はこのクロック
発生回路５からのクロック信号により上記受信回路２の
待受監視（ルックスルー）時間及び上記送信回路３の送
信時間の制御を行う制御回路である。FIG. 1 is a block wiring diagram showing an example of a conventional transmitting/receiving device of this type, in which 1 is a receiving antenna that receives a target radio signal, 2 is a receiving circuit that amplifies and detects the radio waves captured by this receiving antenna 1, and 3 4 is a transmitting antenna that emits the output of this transmitting circuit 3; 5 is a clock generating circuit that generates a clock signal; and 6 is a clock signal from this clock generating circuit 5 to generate the above-mentioned receiving circuit 2. This is a control circuit that controls the standby monitoring (look-through) time of the transmission circuit 3 and the transmission time of the transmission circuit 3.
上記のように構成された送受信装置においては、待受監
視（ルックスルー）期間には送信回路３からの妨害電波
の送信を停止し受信回路２の受信動作が確実に行えるよ
うにしている。In the transmitting/receiving device configured as described above, the transmission of interfering radio waves from the transmitting circuit 3 is stopped during the standby monitoring (look-through) period so that the receiving circuit 2 can perform the receiving operation reliably.
待受監視（ルックスルー）期間には、受信回路２は対象
無線信号（所定の周波数の信号）の有無を検出し、定め
られたスレッショールドレベル以上の信号に対シ信号「
有」の出力を制御回路６に送る。During the standby monitoring (look-through) period, the receiving circuit 2 detects the presence or absence of a target radio signal (a signal with a predetermined frequency), and sends a target radio signal to a signal exceeding a predetermined threshold level.
An output of "Yes" is sent to the control circuit 6.
制御回路６では信号「有」の信号が入った場合には、一
定のタイミングで送信回路３に送信開始の信号を送る。When the control circuit 6 receives the "present" signal, it sends a transmission start signal to the transmission circuit 3 at a fixed timing.
一定時間送信を行った後は制御回路６からの信号で送信
を停止し、待受監視（ルックスルー）動作に入る。After transmitting for a certain period of time, the transmitter stops transmitting in response to a signal from the control circuit 6 and enters standby monitoring (look-through) operation.
上記のように待受監視（ルックスルー）動作及び送信動
作を交互に行い時分割的に運用される。As described above, the standby monitoring (look-through) operation and the transmission operation are performed alternately and operated in a time-division manner.
第２図は送受信装置の動作バタン図であり、図において
ｔｓｌ 、ｔｓ２．ｔｓ３は送信期間、ｔｌｌ、ｔ１２
は待受監視（ルックスルー）期間である。FIG. 2 is an operational button diagram of the transmitting/receiving device, and in the figure, tsl, ts2. ts3 is the transmission period, tll, t12
is the standby monitoring (look-through) period.
これらの期間は一定条件下では特に変化させないのが普
通であった。These periods were usually not changed under certain conditions.
すなわち図においてｔｓ１＝ｔＳ２−ｔＳ３及びｔ１１
＝ｔ１２であった。That is, in the figure, ts1 = tS2 - tS3 and t11
= t12.
上記のように待受監視（ルックスルー）動作及び送信動
作は時分割的に運用されるので、受信空中線１と送信空
中線４は共用されることがある。As described above, the standby monitoring (look-through) operation and the transmitting operation are performed in a time-division manner, so the receiving antenna 1 and the transmitting antenna 4 may be used in common.
共用される場合には、１つの空中線をスイッチ等で切換
えて使用する。When shared, use one antenna by switching it with a switch or the like.
なお送信回路３から出力される信号の特性は、無変調で
ある場合もあり、また適当な変調信号、適当な変調形式
で運用されることもあり、目的により最適の方法がその
都度選定される。Note that the characteristics of the signal output from the transmitting circuit 3 may be unmodulated, or may be operated with an appropriate modulated signal or appropriate modulation format, and the optimal method is selected each time depending on the purpose. .
上記のような送受信装置では待受監視（ルックスルー）
期間及び繰返し周期を容易に計測され、計測されたのち
は、この待受監視（ルックスルー）の時間内に情報の伝
達を効率的に行われることがあり、これを防ぐためには
待受監視（ルックスルー）の時間及び繰り返し周期をし
ばしば変更することが必要できわめて繁雑な運用が要求
された。The above-mentioned transmitting/receiving devices use standby monitoring (look-through).
The period and repetition period can be easily measured, and after being measured, information may be efficiently transmitted within the time of this standby monitoring (look-through).To prevent this, standby monitoring ( It was necessary to frequently change the look-through time and repetition period, which required extremely complicated operation.
この発明は上記のような欠点を除去するためになされた
もので、待受監視（ルックスルー）の時間を容易に予測
されないようにすることにより、有効な電波妨害を行う
ことのできる送受信装置を得ることを目的とするもので
ある。This invention was made in order to eliminate the above-mentioned drawbacks, and provides a transmitting/receiving device that can effectively jam radio waves by making the standby monitoring (look-through) time difficult to predict. The purpose is to obtain.
第３図はこの発明の一実施例を示すブロック結線図であ
り、１〜６は上記従来装置と全く同一のものである。FIG. 3 is a block diagram showing one embodiment of the present invention, and numerals 1 to 6 are exactly the same as the conventional device described above.
７は不定期的な待受監視（ルックスルー）の周期を発生
するランダム信号発生回路である。7 is a random signal generating circuit that generates an irregular standby monitoring (look-through) cycle.
上記のように構成された送受信装置の動作を第４図を参
照しながら説明する。The operation of the transmitting/receiving apparatus configured as described above will be explained with reference to FIG.
第４図は第３図の送受信装置の動作バタン図である。FIG. 4 is an operational button diagram of the transmitting/receiving device shown in FIG. 3.
制御装置６は、ランダム信号発生回路１よりの信号によ
り待受監視（ルックスルー）の発生時間を不規則にし、
従って送信期間はｔｓ４＼ｔｓ５＼ｔｓ６のように不同
になっている。The control device 6 makes the generation time of standby monitoring (look-through) irregular based on the signal from the random signal generation circuit 1,
Therefore, the transmission periods are different, such as ts4\ts5\ts6.
又待受監視（ルックスルー）の期間ｔ７３ｙｔｓ＋は受
信信号が検知できるに必要な最短期間に設定するため、
多くの場合はｔ１３＝ｔ１４となるものであり、これ以
上の短時間化ができない限界とすることがこの機器の目
的にかなうものである。Also, the standby monitoring (look-through) period t73yts+ is set to the shortest period necessary to detect the received signal.
In many cases, t13=t14, and the purpose of this device is to set it to a limit at which the time cannot be shortened any further.
ランダム信号発生回路７は、待受監視（ルックスルー）
のタイミング周期を相手側に容易に検知計測され得ない
程度の不規則性の信号を発生するもので、擬似ランダム
信号発生回路、乱数発生回路などでもよい。The random signal generation circuit 7 performs standby monitoring (look-through)
The device generates a signal whose timing period is so irregular that it cannot be easily detected and measured by the other party, and may be a pseudo-random signal generation circuit, a random number generation circuit, or the like.
上記のように待受監視（ルックスルー）の期間の長さは
、常に一定であるのが通常であるが、検出すべき受信信
号の種類によって検出確率が変動するため、これをも可
変とすることが効用のある場合がある。As mentioned above, the length of the standby monitoring (look-through) period is normally constant, but since the detection probability varies depending on the type of received signal to be detected, it is also variable. There are cases where it is useful.
この発明は以上説明したとおり、ランダム信号発生回路
を設けるという簡単な構造により、待受監視の発生周期
をランダム的に変化させることにより有効な妨害を行う
ことができるという効果がある。As described above, the present invention has the advantage that effective interference can be performed by randomly changing the generation cycle of standby monitoring using a simple structure in which a random signal generating circuit is provided.
第１図は従来の送受信装置の一例を示すブロック結線図
、第２図は第１図の送受信装置の動作パターン図、第３
図はこの発明の一実施例を示すブロック結線図、第４図
は第３図の送受信装置の動作パターン図である。
図において２は受信回路、３は送信回路、５はクロック
発生回路、６は制御回路、γはランダム信号発生回路で
ある。
なお各図中同一符号は、同一または相当部分を示すもの
とする。Figure 1 is a block wiring diagram showing an example of a conventional transmitter/receiver, Figure 2 is an operation pattern diagram of the transmitter/receiver in Figure 1, and Figure 3 is a block diagram showing an example of a conventional transmitter/receiver.
The figure is a block diagram showing one embodiment of the present invention, and FIG. 4 is an operation pattern diagram of the transmitting/receiving device shown in FIG. 3. In the figure, 2 is a receiving circuit, 3 is a transmitting circuit, 5 is a clock generating circuit, 6 is a control circuit, and γ is a random signal generating circuit. Note that the same reference numerals in each figure indicate the same or corresponding parts.
Claims (1)
待受監視動作終了後に妨害電波を送信する送信動作とを
交互に繰返し行う送受信装置において、上記待受監視動
作の開始時期をランダム又は擬似ランダム的に制御する
ランダム信号発生回路を備えたことを特徴とする送受信
装置。1. In a transmitting/receiving device that alternately repeats a standby monitoring operation in which a target radio signal is received during standby and a transmission operation in which jamming radio waves are transmitted after the standby monitoring operation is completed, the start timing of the standby monitoring operation is set randomly or A transmitting/receiving device comprising a random signal generating circuit that performs pseudo-random control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53072559A JPS5842980B2 (en) | 1978-06-14 | 1978-06-14 | Transmitting/receiving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53072559A JPS5842980B2 (en) | 1978-06-14 | 1978-06-14 | Transmitting/receiving device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54162921A JPS54162921A (en) | 1979-12-25 |
| JPS5842980B2 true JPS5842980B2 (en) | 1983-09-22 |
Family
ID=13492829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53072559A Expired JPS5842980B2 (en) | 1978-06-14 | 1978-06-14 | Transmitting/receiving device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5842980B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10285148A (en) * | 1997-04-04 | 1998-10-23 | Matsushita Electric Ind Co Ltd | Radio communication device and cellular system |
-
1978
- 1978-06-14 JP JP53072559A patent/JPS5842980B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54162921A (en) | 1979-12-25 |
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