Data layer radar dense false target jamming resisting method based on multi-dimensional feature extraction

Abstract

The invention belongs to the field of radar data processing, and aiming at a difficult problem of autonomous recognition and steady jamming suppression of dense false target jamming, the invention designs a data layer radar dense false target jamming resisting method based on multi-dimensional feature extraction. The method comprises the following steps: firstly, aiming at a dense false target jamming signal and motion feature difference of target echo, performing primary identification for the dense false target jamming through a radial velocity contrast method; secondly, based on the dense false target jamming signal and the spatial feature difference of target echo, performing comparative analysis for the target position and the obtained echo trace point, thereby eliminating infinitelydense echo trace points and flight paths; then, comprehensively identifying the dense false target jamming through spatial and motion information of various moments, performing identification and suppression for the determined dense false target jamming, and retaining an uncertain target echo signal; finally, performing final identification and suppression for the dense false target jamming through a method of multi-radar data association.

Description

technical field [0001] The invention relates to the field of radar data processing and is used for solving the problem of identification and suppression of dense false target interference. Background technique [0002] Active jamming is one of the main threats faced by radar in modern warfare, which seriously affects the performance of radar. At present, there are many types of radar active jamming, complex patterns, and various signal forms, and multiple jamming is used at the same time, which brings great challenges to radar detection and tracking. [0003] In particular, with the wide application of technologies such as DRFM in the field of active jamming, dense false target jamming technology has been widely used. For example, the American EA-18G "Growler" electronic warfare aircraft can modulate precise dense false target deception signals, so that the enemy's radar system can obtain wrong target azimuth and distance information; The DRFM electronic jammer can impleme...

AI Technical Summary

Problems solved by technology

Compared with noise suppression jamming, this kind of jamming has a strong deception effect through the copying and forwarding of the radar transmission signal, which can make the radar unable to lock the real target, and further affect the pulse Doppler radar, pulse compression radar and other modern radar bands. here comes a serious challenge

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