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Transmit type satellite monitoring simulating device and working and application method

A satellite signal and analog equipment technology, applied in radio transmission systems, electrical components, transmission systems, etc., can solve the problems that satellite signal transponders cannot provide satellite signals to testers, and it is unfavorable for satellite receivers to receive, test, and amplify signals

Inactive Publication Date: 2014-10-22
CHENGDUSCEON TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing satellite signal transponder can only simply amplify and forward the received satellite signal, but it amplifies the noise while amplifying the signal, which is not conducive to the signal reception test of the satellite receiver
[0004] The second shortcoming of the existing satellite signal transponder is that it cannot provide the testers with the status of the current satellite signal. When testing the satellite receiver, the testers do not refer to it to judge whether it is a satellite signal problem or a problem with the receiver under test. The forwarded satellite navigation signal for combination mode selection

Method used

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  • Transmit type satellite monitoring simulating device and working and application method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Such as figure 1 shown.

[0041] The repeating satellite signal monitoring analog equipment includes the following structure:

[0042] Receiving antenna module: Receive GPS, GLS, BD2 satellite signals, filter and amplify GPS, GLS, BD2 satellite signals, and output low-noise and amplified satellite signals;

[0043] Receiving channel unit: After receiving the low-noise and amplified satellite signal, it performs frequency conversion, amplification, filtering, and outputs an intermediate frequency signal that meets the requirements of the signal processing unit;

[0044] Receive the intermediate frequency signal output by the receiving channel unit, perform AD conversion on the intermediate frequency signal, and perform despreading processing, demodulation processing, and positioning processing on the signal output by AD conversion. After locking a certain satellite signal, output the ranging, Speed ​​measurement parameters, demodulate the navigation message of the lock...

Embodiment 2

[0067] The working method of the forwarding satellite signal monitoring analog equipment: including the forwarding satellite signal monitoring analog equipment, the working method of the forwarding satellite signal monitoring analog equipment is: after the forwarding satellite signal monitoring analog equipment is powered on, it first initializes: equipment self-inspection According to the saved ephemeris and almanac, preset relevant parameters of GPS, GLS, BD2 signal processing channels, and carry out satellite search, so as to realize fast capture and signal forwarding;

[0068] After the initialization is completed, the device enters the normal working state and performs the following work:

[0069] Set the forwarding working mode of the device according to the initial storage data, or receive and process the external control information of the device in real time through the receiving serial communication interface;

[0070] The receiving antenna module outputs low-noise a...

Embodiment 3

[0076] The application method of the repeating satellite signal monitoring analog equipment includes the repeating satellite signal monitoring analog equipment, and also includes the satellite signal receiver under test, the repeating satellite signal monitoring analog equipment receives satellite signals, and measures and demodulates the satellite signals According to the measurement parameters, satellite messages, and the set positioning mode, the positioning and speed calculation are carried out, and the data packets in the NMEA0183 format are output to the embedded industrial computer unit according to the protocol requirements, and the positioning analysis information output is completed. The digital signal processing unit processes the satellite signals. For forwarding, the transmitting antenna module completes the signal forwarding process, the satellite signal receiver under test receives the output signal of the transmitting antenna module, the satellite signal receiver...

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PUM

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Abstract

The invention discloses transmit type satellite monitoring simulation device and a working method thereof. The device comprises a receiving antenna module, a receiving channel unit, a digital signal processing unit and an emitting channel unit, wherein the receiving antenna module is used for processing GPS, GLS and BD2 satellite signals by filter and amplification and outputting a low-noise and amplified satellite signal; the receiving channel unit is used for performing frequency conversion, amplification, filtering, and outputting an intermediate-frequency signal that meets the requirement of a signal processing unit; the digital signal processing unit is used for receiving the intermediate-frequency signal output by the receiving channel unit, performing AD conversion for the intermediate-frequency signal, carrying out anti-interference processing and modulation for the signal, and then outputting the intermediate-frequency signal through a DA module; the emitting channel unit is used for receiving the intermediate-frequency signal output by the DA module of the emitting channel unit, and performing power control, up-conversion processing, synthesizing and attenuation output for the intermediate-frequency signal output by the DA module.

Description

technical field [0001] The invention belongs to the technical field of satellite signal receivers and signal transmitters, and specifically relates to a forwarding satellite signal monitoring analog device and its working method and application method. Background technique [0002] As satellite navigation research and development and testing equipment, satellite signal transponders can provide an indoor testing environment, reduce field tests and field maintenance, save development and maintenance costs, shorten product development cycles, analyze product problems, and improve product design. Level, improve product testing efficiency. [0003] The main technical scheme of the existing satellite signal transponder is: use the receiving antenna of single and multiple frequency points to receive the relevant satellite navigation signal, amplify it through the power amplifier, add a certain range of power amplification attenuation control, and then pass the transmitting cable O...

Claims

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Application Information

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IPC IPC(8): H04B7/185
Inventor 张鹏钟勇余湋左培成徐坤智
Owner CHENGDUSCEON TECH
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