Full-coherent X-waveband broadband radar object simulator

Abstract

Disclosed in the invention is a full-coherent X-waveband broadband radar object simulator comprising a radar signal generator, an up conversion assembly, an X-waveband fiber delay device, a digitally controlled attenuator and a frequency synthesizer. The output terminal of the frequency synthesizer is connected with the input terminal of the radar signal generator and the input terminal of the up conversion assembly; the output terminal of the radar signal generator is connected with the input terminal of the up conversion assembly, the input terminal of the X-waveband fiber delay device, and the input terminal of the digitally controlled attenuator; the output terminal of the up conversion assembly is connected with the input terminal of the X-waveband fiber delay device; and the output terminal of the X-waveband fiber delay device is connected with the input terminal of the digitally controlled attenuator. According to the invention, with cooperation of the existing radar signal generator, various intermediate-frequency signals needed by the modern radar system can be generated and a full-coherent large-broadband radar object echo radio-frequency signal with high simulation quality and excellent fidelity can be simulated. And the simulator can be applied to debugging and performance detection of a radar receiving sub machine and a signal processing sub machine.

Description

technical field [0001] The invention relates to the technical field of radar target simulation, in particular to a fully coherent X-band broadband radar target simulator. Background technique [0002] With the continuous development of modern radar technology, the non-coherent narrow-band monopulse signal adopted by early radar is gradually replaced by fully coherent wide-band signal. In the actual battlefield environment, in order to obtain better performances such as search, tracking, anti-jamming, and anti-stealth, modern radars usually use technologies such as frequency-agile, linear frequency modulation, phase coding, large-bandwidth, and fully coherent. Radar target simulation technology has emerged along with modern system simulation technology. During the development and application of radar, it is necessary to provide a target environment for system debugging, evaluation, daily function testing and training for operators and users. At present, the target simulation...

AI Technical Summary

Problems solved by technology

Since this kind of radar target simulation technology is mainly carried out at the intermediate frequency, it can only debug and detect the signal processing extension, and it performs simple distance delay simulation through the timing signal delay of radar work, so the application of this technology is narrow. The authenticity of the target echo signal is poor

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