WO2008144990A1 - Procédé et système de traitement hf généralement configurables pour un signal de satellite de navigation - Google Patents

Procédé et système de traitement hf généralement configurables pour un signal de satellite de navigation Download PDF

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Publication number
WO2008144990A1
WO2008144990A1 PCT/CN2007/071072 CN2007071072W WO2008144990A1 WO 2008144990 A1 WO2008144990 A1 WO 2008144990A1 CN 2007071072 W CN2007071072 W CN 2007071072W WO 2008144990 A1 WO2008144990 A1 WO 2008144990A1
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WO
WIPO (PCT)
Prior art keywords
frequency
configurable
digital
navigation satellite
signal
Prior art date
Application number
PCT/CN2007/071072
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English (en)
Chinese (zh)
Inventor
Hansheng Wang
Original Assignee
Olinkstar Corporation, Ltd.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Olinkstar Corporation, Ltd. filed Critical Olinkstar Corporation, Ltd.
Publication of WO2008144990A1 publication Critical patent/WO2008144990A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/33—Multimode operation in different systems which transmit time stamped messages, e.g. GPS/GLONASS
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/32—Multimode operation in a single same satellite system, e.g. GPS L1/L2

Definitions

  • the invention relates to the field of satellite navigation, in particular to a configurable universal radio frequency processing method and system for Navigating satellite signals.
  • the method and system are applicable to radio frequency processing of satellite signals of various navigation satellite systems, various frequencies and various codes. These include the US GPS system, the Galileo system in Europe, the GLONASS system in Russia, the Beidou system in China, and the new satellite navigation system and new satellite signals that may emerge in the future.
  • the invention makes it possible to receive signals of the corresponding navigation satellites according to a common radio frequency circuit, and only needs different settings according to different frequencies and bandwidths, regardless of its system, frequency and pattern, and has versatility, flexibility, and The advantage of low cost.
  • the digital intermediate frequency signal output by the RF circuit is passed through a configurable digital processing module, including a configurable digital mixer, a configurable digital filter, configurable downsampling, etc., such that the final output of the digital intermediate frequency signal has an intermediate frequency, bandwidth, and sampling.
  • a configurable digital processing module including a configurable digital mixer, a configurable digital filter, configurable downsampling, etc.
  • the frequency, the number of bits of the sampling point can be set to increase the flexibility of the output of the RF processing part, and to match the requirements of the digital baseband processing part to the maximum extent.
  • a satellite navigation system is a system in which a plurality of navigation satellite signals are received by a receiver, and the receiver performs operations based on the received navigation satellite signals to obtain a receiver position.
  • the general satellite navigation system consists of multiple navigation satellites distributed in different orbital planes to ensure that any navigation satellite can receive signals from any location within the application at any time, such as the current US GPS (Global Positioning). System Global Positioning System)
  • the system is used worldwide to ensure that at least four navigation satellites can be received at any time, anywhere in the world.
  • the satellite navigation receiver is a device that receives the navigation satellite signal and calculates the position, time, and speed according to the received satellite signal.
  • FIG. 1 is a block diagram of the components of a satellite navigation receiver.
  • Satellite navigation receivers are usually composed of hardware and software.
  • the hardware part includes the antenna, the RF section, and the baseband processing.
  • the antenna converts the navigation satellite electromagnetic waves in space into electrical signals.
  • the radio frequency part amplifies, downconverts, IFs, IFs, and digital-to-analog the navigation satellite signals, and finally outputs the digital IF signals.
  • Baseband processing is generally a digital circuit that processes digital intermediate frequency signals from the radio frequency portion, including correlators, IF carrier generation, and code clock generation.
  • the software part runs on the processor, performs operations based on the results of the baseband processing section, obtains the position, speed and time of the receiver, and simultaneously writes the control parameters to the baseband processing section.
  • the RF processing part is an indispensable part of the satellite navigation receiver and the most front-end part.
  • Figure 2 is a block diagram of the current RF processing part of the satellite navigation receiver.
  • the low noise amplifier first amplifies the RF signal. This part is at the forefront of the system and requires a low noise figure and proper gain to ensure the noise performance of the entire system.
  • Phase-locked loop The local clock multiplies the local carrier and mixes with the RF signal to obtain an intermediate frequency signal with a low frequency (several MHz to several tens of MHz).
  • the filter is a bandpass filter that filters out noise outside a certain band.
  • the analog-to-digital conversion is a digital signal in which an intermediate frequency analog signal is changed to one or more bits, and the digital signal can be further subjected to digital signal processing.
  • L1 signals frequency is 1. 57542 GHz
  • L2 signals frequency is 1. 2276 GHz
  • C/A codes bandwidth 2 MHz
  • P codes bandwidth 20 MHz
  • L5 signal frequency is 1. 17645GHz
  • the circuit using the above-mentioned existing navigation satellite radio frequency processing method can only receive and receive a single type of navigation satellite signal fixedly, for example, can only receive the C/A code of the L1 frequency, and if it is to receive the navigation satellite signal of other frequencies, Use another circuit.
  • the present invention provides a configurable universal radio frequency processing method for navigation satellite signals in view of the deficiencies or deficiencies in the prior art.
  • the present invention also provides a configurable universal radio frequency processing system for navigating satellite signals.
  • a configurable universal radio frequency processing method for Navigating satellite signals comprising the steps of: amplifying a navigation satellite radio frequency signal by using a broadband low noise amplifier, the working range of the broadband low noise amplifier covering two or more navigation satellite radio frequency signals Mixing the amplified navigation satellite RF signal with a frequency-configurable local carrier to obtain an intermediate frequency signal.
  • a frequency-configurable local carrier is generated using a configurable phase-locked loop.
  • the frequency of the navigation satellite radio frequency signal is in the range of l ⁇ 2 GHz.
  • f IF is the intermediate frequency of the intermediate frequency signal
  • f s is the frequency of the navigation satellite signal, f.
  • the local carrier frequency; and the f s of the navigation satellite signals of different frequencies are different, by selecting the corresponding f. , so that the intermediate frequency f IF is kept substantially constant.
  • the digital intermediate frequency signal performs one or more of the following digital processing: digital mixing, digital filtering, digital downsampling; after digital processing, the intermediate frequency, bandwidth, and sampling rate of the digital intermediate frequency signal can be changed.
  • a configurable general-purpose RF processing system for Navigating satellite signals comprising a mixer, the mixer being respectively connected to a low noise amplifier and a phase locked loop, wherein: the low noise amplifier is a broadband low noise amplifier, and its working range covers two Or more than two kinds of navigation satellite radio frequency signals; the phase locked loop is a configurable phase locked loop having a data interface; the data interface is used to write configuration information, and the configurable phase locked loop generates a frequency settable Local carrier.
  • f IF is the intermediate frequency of the intermediate frequency signal, which is the frequency of the navigation satellite signal, f.
  • the local carrier frequency and the f s of the navigation satellite signals of different frequencies are different, by selecting the corresponding f. , so that the intermediate frequency f IF is kept substantially constant.
  • intermediate frequency amplifiers are sequentially connected intermediate frequency amplifiers, filters, gain control amplifiers, and analog to digital converters, the intermediate frequency amplifiers being coupled to the mixers, the analog to digital converters being coupled to one or more of the following configurable digital processing modules Series: Configurable digital mixer, configurable digital filter, configurable downsampling; various configuration information written via data interface; configurable downsampled output digital IF signal.
  • the configurable universal radio frequency processing method and system for the navigation satellite signal of the invention is a new universally programmable radio frequency processing technology for navigation satellite signals, and has a universal and unified circuit, which can receive when different settings are made.
  • the navigation satellite signals with different frequencies and bandwidths are simple in structure, low in cost and high in flexibility, which is beneficial to the design of multi-mode satellite navigation receivers.
  • the multimode satellite navigation receiver embodying the present invention can be implemented either by discrete components or by integrated circuits.
  • Figure 1 is a block diagram of the components of a satellite navigation receiver.
  • FIG. 2 is a schematic block diagram of a radio frequency processing portion of a satellite navigation receiver in the prior art.
  • FIG. 3 is a schematic block diagram of a general configurable radio frequency processing method for a navigation satellite signal of the present invention.
  • FIG. 4 is a block diagram of a general configurable radio frequency processing system for a navigation satellite signal of the present invention.
  • FIG. 5 is a block diagram of a radio frequency processing system with a configurable digital processing module of the present invention. detailed description
  • the RF signal is amplified by broadband low-noise, and its bandwidth should cover the entire satellite navigation band, which can perform low-noise amplification of navigation satellite signals of different frequencies.
  • the signals of the existing navigation satellites are all in the range of 1 to 2 GHz, and the working range of the low noise amplification can be set to 1 to 2 GHz.
  • the low-noise amplification of the radio frequency portion of the existing satellite navigation receiver has a narrow working range, and generally covers only the received navigation satellite signals, for example, for a receiver that can only receive GPS L1 frequency C/A, low noise amplification.
  • the working range is centered on 1. 57542 GHz, and the bandwidth is generally several tens of MHz.
  • the frequency of the local carrier can be set instead of fixed.
  • the f s of the navigation satellite signals of different frequencies is different by selecting the corresponding f.
  • the intermediate frequency f IF is kept substantially constant, which can facilitate subsequent processing.
  • the signal frequency f s is 1. 57542 GHz, then the local carrier frequency f. Can be set to 1. 56542GHz; for GPS L2 signal, the signal frequency f s is 1. 2276GHz, then the local carrier frequency f. It can be set to 1. 2176 GHz; for the GL0NASS signal, the signal frequency f s is 1. 602 GHz, then the local carrier frequency f. It can be set to 1. 592 GHz; for the Galileo E6 signal, the signal frequency f s is 1.27875 GHz, then the local carrier frequency f.
  • the local carrier frequency in the RF portion of the existing satellite navigation receiver is fixed.
  • the IF amplification, filtering, gain control amplification, and analog-to-digital conversion are basically the same as the RF processing methods of the existing satellite navigation receivers.
  • the signal after the analog-to-digital conversion, can be selectively digitally processed, including digital mixing, digital filtering, digital downsampling, and digital processing can include one or more of them.
  • digital processing After digital processing, the IF frequency, bandwidth, and sampling rate of the digital IF signal can be changed.
  • the bandwidth of the low-noise amplifier should cover the entire satellite navigation band, and the low-noise amplification of the navigation satellite signals of different frequencies can be performed.
  • the bandwidth of the low-noise amplifier of the radio frequency part of the existing satellite navigation receiver is narrow, generally only the coverage area.
  • the phase locked loop is configurable and can generate local carrier signals of different frequencies depending on the frequency of the navigation satellite signals to be received.
  • the role of the mixer is to mix and get the IF signal.
  • the configurable phase-locked loop also produces a corresponding f.
  • the intermediate frequency f IF is kept substantially constant, which can facilitate the processing of the latter circuit.
  • the local carrier frequency in the RF portion of the existing satellite navigation receiver is fixed.
  • the IF amplifier, filter, gain control amplifier, and analog-to-digital converter are basically the same as those in the RF portion of the existing satellite navigation receiver, and the digital IF signal is finally obtained.
  • the data interface is used to write configuration information, and can be any data interface such as an SPI interface.
  • the digital intermediate frequency signal is used as the input of the digital baseband processing part.
  • the digital baseband processing part has different requirements for the digital intermediate frequency signal, including changing the bandwidth of the digital intermediate frequency signal, the intermediate frequency, the sampling frequency, the number of sampling points, and the like. Therefore, as shown in FIG. 5, on the basis of the implementation device of FIG. 4, several configurable digital processing modules can be added.
  • Configurable digital mixers can set different local carrier frequencies according to requirements, arbitrarily change the IF frequency to obtain a new IF frequency; Configurable digital filter order, coefficient can be set, bandwidth can be set and filtered Features, such as a 20MHz bandwidth signal can be changed to a 2MHz bandwidth signal, and can also filter out signals of certain frequency bands; configurable downsampling can arbitrarily reduce the sampling rate of digital IF signals, such as when the signal bandwidth is small and the IF frequency is low. A lower sampling frequency can be used to reduce the speed of the digital baseband processing portion.
  • the configurable meanings in the above modules also include the processing of the digital intermediate frequency signal without passing through one or several of the modules.
  • the configurable digital processing module increases the flexibility of the RF processing section output to best match the requirements of the digital baseband processing section.
  • Various configuration information is also written through a data interface.
  • the invention is applicable to radio frequency processing of satellite signals of various navigation satellite systems, various frequencies and various codes, including the GPS system of the United States, the Galileo system of Europe, the GLONASS system of Russia, the Beidou system of China, etc., and may appear in the future.
  • the new satellite navigation system and new satellite signals also include wide-area enhanced satellite signals, such as the existing North American WAAS system, the European EGNOS system, and the new wide-area enhanced satellite system that may emerge in the future.
  • the invention enables a fixed universal radio frequency circuit to receive signals of any navigation satellite through different settings, regardless of its system, frequency and pattern, and has the advantages of versatility, flexibility and low cost.
  • the RF processing method can be implemented either by discrete components or by an integrated circuit.
  • the method and system of the present invention have the following features:
  • the main innovations are: wideband low noise amplifier covering the entire satellite navigation signal band; configurable phase-locked loop to generate a local carrier with frequency settable; for different frequency navigation satellite signals, the intermediate frequency is basically fixed to simplify the latter circuit .
  • Add configurable digital processing module including configurable digital mixer, configurable digital filter, configurable downsampling, so that the IF frequency, bandwidth, sampling frequency, and sampling point number of the final output digital IF signal can be Set to increase the flexibility of the RF processing section output to best match the requirements of the digital baseband processing section.
  • the configurable digital processing module can be one or more of the foregoing.
  • the data interface is used to write various configuration information.

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  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)

Abstract

La présente invention concerne un procédé de traitement HF généralement configurable qui comprend : l'amplification des signaux HF du satellite de navigation à l'aide d'un amplificateur à large bande et peu de bruit dont la plage de fonctionnement couvre deux types ou plus de signaux HF de satellite de navigation, le mélange des signaux HF de satellite de navigation amplifiés avec l'onde porteuse locale dans laquelle la fréquence est configurable, ainsi que l'obtention de signaux de fréquence intermédiaires. L'onde porteuse locale, avec une fréquence configurable, est générée à l'aide d'une boucle fermée à phase configurable.
PCT/CN2007/071072 2007-05-25 2007-11-16 Procédé et système de traitement hf généralement configurables pour un signal de satellite de navigation WO2008144990A1 (fr)

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CN2007100996192A CN101055309B (zh) 2007-05-25 2007-05-25 导航卫星信号的可配置通用射频处理方法和***
CN200710099619.2 2007-05-25

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CN111384986A (zh) * 2018-12-31 2020-07-07 浙江英特讯信息科技有限公司 智能通信管理终端
CN113031030A (zh) * 2021-02-23 2021-06-25 武汉芯行创智科技有限公司 基带信号处理***及方法
CN113447967A (zh) * 2021-06-28 2021-09-28 西安邮电大学 集成卫星导航基带ip的应用处理器芯片及集成方法
CN114301511A (zh) * 2021-12-08 2022-04-08 北京微纳星空科技有限公司 一种高速上注数据的处理方法、设备及存储介质
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Publication number Priority date Publication date Assignee Title
CN111384986A (zh) * 2018-12-31 2020-07-07 浙江英特讯信息科技有限公司 智能通信管理终端
CN113031030A (zh) * 2021-02-23 2021-06-25 武汉芯行创智科技有限公司 基带信号处理***及方法
CN113447967A (zh) * 2021-06-28 2021-09-28 西安邮电大学 集成卫星导航基带ip的应用处理器芯片及集成方法
CN113447967B (zh) * 2021-06-28 2024-04-12 西安邮电大学 集成卫星导航基带ip的应用处理器芯片及集成方法
CN114301511A (zh) * 2021-12-08 2022-04-08 北京微纳星空科技有限公司 一种高速上注数据的处理方法、设备及存储介质
CN114301511B (zh) * 2021-12-08 2024-04-16 北京微纳星空科技有限公司 一种高速上注数据的处理方法、设备及存储介质
CN115657093A (zh) * 2022-12-29 2023-01-31 成都奇芯微电子有限公司 基于捕获数据存储的方法

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