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Beidou equipment inter-module electromagnetic interference test method

An electromagnetic interference and module technology, which is used in radio wave measurement systems, measurement devices, satellite radio beacon positioning systems, etc., can solve the problems of large test time and cost, and achieve the effect of reducing test time.

Inactive Publication Date: 2015-12-23
CHINA ACADEMY OF INFORMATION & COMM +1
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AI Technical Summary

Problems solved by technology

TIS can represent the receiving performance of the terminal, but multiple channels need to be tested for interference testing. If the TIS is tested for each channel separately, the test time cost is too large

Method used

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  • Beidou equipment inter-module electromagnetic interference test method
  • Beidou equipment inter-module electromagnetic interference test method

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Embodiment Construction

[0022] The electromagnetic interference test between modules of Beidou equipment can be tested with the help of a fully anechoic chamber. The test system is as follows: figure 1 shown. It mainly includes comprehensive test terminal, measurement antenna, two sets of communication antennas, Beidou satellite comprehensive tester (Beidou satellite signal source), interference source (mobile network simulator can be used, etc.), turntable controller and full anechoic chamber, etc. The comprehensive test terminal is used to control the test instrument and the user machine under test, analyze the test results, etc. One communication antenna is used to send and receive Beidou signals, and the other is used to send and receive signals from the interference module. The Beidou satellite signal source is used to simulate and generate Beidou satellite navigation signals , to simulate satellite orbit, atmospheric time delay error and user movement trajectory, and build a navigation receivin...

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Abstract

The invention provides a Beidou equipment inter-module electromagnetic interference test method. When a Beidou module is taken as an interfering source, the intensity of electromagnetic interference to a tested module on each channel is tested; and when the Beidou module is taken as an interfered source, the intensity of electromagnetic interference of each channel of an interfering source to the Beidou module is tested. In interference test, the error probability or positioning failure probability is used to replace total omnidirectional sensitivity test to reduce the test time, and a total omnidirectional sensitivity result under the condition of the highest degree of being interfered is obtained through measurement to reflect the degree of electromagnetic interference to Beidou equipment in a multi-mode concurrent state. The problem that there is no standard for reference as to the methods for testing the interference between a wireless module and a Beidou module of terminal equipment with Beidou navigation and positioning functions is solved.

Description

technical field [0001] At present, there are standard test methods for the interference test between wireless modules, but for terminal equipment with Beidou navigation and positioning functions, there is no standard for the interference test method between wireless modules and Beidou modules. The present invention provides an electromagnetic interference testing system and testing method between modules of Beidou equipment. Background technique [0002] With the promotion of Beidou navigation and positioning in terminal equipment, when the wireless module and Beidou module work simultaneously in the terminal, interference will occur, including interference from adjacent channels and frequency band harmonics. At this time, the magnitude of the interference will affect the Beidou mode. The performance of the BDS group, if the degree of interference is large, it may lead to a sharp deterioration of the receiving sensitivity of the Beidou module, seriously affecting the user ex...

Claims

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Application Information

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IPC IPC(8): G01S19/23
CPCG01S19/23
Inventor 陈晓晨张钦娟王娜刘先会张博钧唐伟生
Owner CHINA ACADEMY OF INFORMATION & COMM
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