Anti-interference test system and method for babysbreath darkroom satellite navigation terminal

Abstract

The invention relates to the field of satellite navigation. The invention discloses an anti-interference test system and method for a babysbreath darkroom satellite navigation terminal. The system comprises a babysbreath microwave anechoic chamber, an upper computer arranged outside the babysbreath microwave anechoic chamber, and a satellite navigation signal simulation source, a mobile interference source, a fixed interference source and a satellite navigation terminal which are arranged in the babysbreath microwave anechoic chamber, the satellite navigation signal simulation source, the mobile interference source and the fixed interference source, generate, according to parameter instructions issued by the upper computer, a satellite navigation signal and an interference signal requiredfor testing a satellite navigation terminal, N navigation antennas (N>=48) are uniformly arranged at the upper part in the babysbreath microwave anechoic chamber, and the satellite navigation signal and the interference signal are broadcasted in the babysbreath microwave anechoic chamber through the corresponding navigation antennas. According to the method, a babysbreath darkroom anti-interference test environment close to an off-site real complex electromagnetic environment is effectively constructed, the requirement of a satellite navigation terminal for multi-channel single-satellite dynamic anti-interference tests is met, and comprehensiveness and scientific rationality of test results are ensured.

Description

technical field [0001] The invention belongs to the technical field of satellite navigation, and in particular relates to an anti-jamming test system and method for a satellite navigation terminal in a darkroom full of stars. Background technique [0002] In recent years, with the vigorous development of the satellite navigation industry, various types of satellite navigation terminals have emerged continuously. In the development process of satellite navigation equipment, it is necessary to design anti-jamming performance test methods based on its anti-jamming technical characteristics. The anti-interference performance is tested and evaluated, so the anti-interference test has become an important part of the research. At present, the test method adopted by the anti-jamming terminal is relatively simple. Generally, the satellite navigation signal adopts a single signal output form, and the interference signal adopts a static interference simulation method, so as to realize ...

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Problems solved by technology

At present, the test method adopted by the anti-jamming terminal is relatively simple. Generally, the satellite navigation signal adopts a single signal output form, and the interference signal adopts a static interference simulation method, so as to realize the anti-jamming terminal test in the microwave anechoic chamber, but for the dynamic satellite navigation terminal There is no uniform reference standard for the test and evaluation of anti-jamming capability, especially in the real complex electromagnetic environment. The anti-jamming performance of military satellite navigation terminals is not very good in the testing, finalizing and testing stages of such terminals. D

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