A radar suppression jamming detection method based on full-band spectrum analysis

Abstract

The invention relates to field of radar signal processing technology and discloses a method for blanket jamming radar detection based on full-frequency band spectrum analysis, comprising: obtaining accumulated values of spectrum respectively corresponding to certain numbers of pulses with a radar scanning cycle; based on the accumulated values, calculating the median value and average value of each accumulated value, obtaining the value after weighted median filtering corresponding to pulse and composing a weighted median filtering result; confirming jamming region collection composed by a certain number of pulses within a radar canning cycle, which includes a certain number of jamming regions; obtaining orientation codes which respectively corresponding to pulses included jamming area, and confirming the corresponding jamming orientation, jamming intensity, jamming type and jamming frequency point. The method can realize power analysis of frequency spectrum on radar working band, which helps engineering project and improves anti-jamming capability of radar, with high recognition rate.

Description

technical field [0001] The invention relates to the technical field of radar signal processing, in particular to a radar suppression interference detection method based on full-band spectrum analysis. Background technique [0002] In modern warfare, the electromagnetic environment is becoming more and more complex, and radar anti-jamming is facing more and more challenges. Suppressive jamming is a type of interference that poses a greater threat to radar; suppressive jamming is through the release of strong noise interference, which enters the radar from the side lobe of the antenna The main channel, superimposed with the target echo, overloads and saturates the radar receiver, seriously affecting the normal detection performance of the radar. [0003] Radar anti-jamming capability has become a core tactical index of radar system design, and jamming detection performance has also become an important part of radar anti-jamming capability. Good jamming detection performance e...

AI Technical Summary

Problems solved by technology

[0004] There are many ways to realize the radar interference detection function, but most of the methods are complicated, not conducive to engineering realization, and have great application limitations; for traditional mechanical scanning radars, due to the limitations of their own system, it is usually used to add a channel outside the main channel The auxiliary channel is used for interference detection, and the information obtained by this method often has false alarms and is not accurate enough; in addition, since the main channel and auxiliary channel work at the current radar operating frequency, only when the interference is at the current radar operating frequency Can be effectively detected, greatly affecting the integrity of the interference detection function

Images