Channel performance testing system and method for satellite navigation anti-jamming baseband chip
A baseband chip and satellite navigation technology, applied in the field of satellite navigation, can solve the problems of high cost, anti-interference baseband chip array antenna interference, complex test system composition, etc., to reduce requirements, reduce test costs, improve test efficiency and test accuracy sexual effect
Active Publication Date: 2021-04-23
HUNAN MATRIX ELECTRONICS TECH
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Problems solved by technology
[0005] 1. The test system built by the existing scheme is complex in composition and high in cost. It is necessary to strictly standardize the link power and delay of each radio frequency signal, otherwise it will directly affect the accuracy of the test and evaluation of the anti-jamming baseband chip, which is not conducive to Rapid Construction of Test System
[0006] 2. Since the anti-jamming baseband chip cannot directly process the radio frequency navigation signal, it needs to cooperate with the array antenna for the whole machine test, so the final evaluation result of the anti-jamming baseband chip introduces the interference of the array antenna, which cannot be truly and objectively reflected Real channel performance of anti-jamming baseband chip
[0007] To sum up, the traditional technology of testing the anti-jamming baseband chip through radio frequency signals cannot strip the influence of the test system, test environment, link error, etc. Performance
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[0030]Next, the technical solutions in the present application embodiment will be described in the present application, and the described embodiments are intended, and the described embodiments are merely embodiments, not all of the embodiments. Based on the embodiments in the present application, the above disclosure of which is the scope of the present application without making in the premise of creative labor.
[0031]The channel performance of the satellite navigation anti-interfering baseband chip generally includes the performance of the channel delay, capture time, and the transmission of signal power dynamic ranges. Seefigure 1 The schematic structural schematic structural diagram of the channel performance test system of the satellite navigation anti-interfering baseband chip provided by the embodiment of the present invention, the system includes: navigation signal simulator and test evaluation unit, the navigation signal simulator and the anti-interference The baseband chip...
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The invention discloses a channel performance testing system and method of a satellite navigation anti-jamming baseband chip, including a navigation signal simulator and a test evaluation unit; the navigation signal simulator includes a signal simulation unit and a control unit, and the control unit is used to generate or receive external Input simulation and control parameters, and send the simulation and control parameters to the signal simulation unit and test evaluation unit; the signal simulation unit is used to generate satellite digital baseband signals according to satellite navigation simulation and control parameters, and send them to the anti-jamming baseband through optical fiber The chip; the test and evaluation unit is used to receive the positioning solution information output by the anti-jamming baseband chip, and compare the positioning solution information with simulation and control parameters to judge the channel performance of the anti-jamming baseband chip. The invention also discloses a testing method, which is used in the above system. The invention has the advantages of improving testing efficiency and testing accuracy, reducing testing cost and the like.
Description
Technical field[0001]The present invention relates generally to satellite navigation technology, and more particularly to channel performance test systems and methods for satellite navigation anti-interfering baseband chips.Background technique[0002]Satellite navigation anti-interfering baseband chip is a core device of anti-interference receivers. The function and performance determines the performance indicators of the whole machine. The working principle is to increase anti-interference in the anti-interference baseband chip to achieve the suppression of the interference signal, thereby Complete capture, tracking, data demodulation of the specified satellite signal, and gives measurement information of the satellite signal of the satellite signal.[0003]At present, the test of the satellite navigation anti-interfering baseband chip is usually carried out in a microwave dark chamber, and the test verification system generates multi-user radio frequency signal generated by the navig...
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IPC IPC(8): G01S19/23
CPCG01S19/23
Inventor 钟小鹏陈振宇樊敏徐帅
Owner HUNAN MATRIX ELECTRONICS TECH