Video-level dense false target interference suppression method based on correlation clustering

Abstract

The invention relates to a video-level dense false target interference suppression method based on correlation clustering. Aiming at the defect that a traditional radar cannot distinguish a strong threat real target in a high-confidence dense false target group, the invention provides a method for accurately inhibiting active deceptive interference entering a radar system from a main lobe or a side lobe of a radar antenna, and the method comprises the following specific steps: channel echo over-threshold envelope condensation, feature structured information reconfiguration, and interference suppression. The method comprises the steps of normalization cross correlation coefficient correction, envelope correlation clustering, dense false target elimination, adjacent channel hidden image and the like. According to the method, the active deceptive interference resistance of the radar is effectively enhanced, and the target discovery probability and combat effectiveness of the radar in a complex electromagnetic environment are improved.

Description

technical field [0001] The invention relates to an interference elimination method, which is mainly used in the field of radar interference signal suppression. Background technique [0002] Active jamming is the main threat to radar in modern warfare, and with the maturity of digital radio frequency memory technology and the gradual application of analog / digital hybrid frequency storage technology, ECM is seeking to develop flexible and changeable high-fidelity deceptive dense false targets Interference style. High-fidelity active deception jamming can accurately simulate the radar echo signal, and enter the radar system from the main lobe or side lobe of the radar antenna with appropriate power, so that the radar cannot distinguish the high-threat real one from the high-confidence false target group Targets, and too many false targets can easily lead to the saturation of radar processing, which in turn poses a huge threat to the radar's battlefield survivability. It can b...

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Problems solved by technology

[0005] In order to overcome the shortcomings of traditional radars that cannot distinguish strong threats from real targets in dense false target groups with high confidence, the present invention uses deceptive dense false target feature structured information reconfiguration, normalized cross-correlation coefficient correction, and envelope correlation Clustering et al. proposed a video-level dense false target interference suppression method based on correlation clustering

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