重频组合脉冲干扰对雷达信号分选的影响分析

Analysis of influence of repeated frequency combined pulse interference on radar signal sorting

为提高雷达信号主动抗分选能力,从削弱分选算法对脉冲重复间隔分选性能的角度出发,分析了直方图法、PRI变换法的算法特征;在一定约束条件下合理设计脉冲干扰信号,并进行仿真验证.仿真结果表明,干扰信号可以改变分选算法对真实雷达重频的统计属性,使侦察系统产生错误或虚假的雷达信号重频,从而实现对高价值目标的电磁防护.

In order to improve the active anti-sorting ability of radar signal,the algorithm characteristics of histogram method and PRI transform method are analyzed from the point of view of weakening the sorting performance of the sorting algorithm to the pulse repetition interval,and then the pulse interference signal is designed reasonably under certain constraints.Finally,the simulation verification is conducted,and the results show that the interference signal can change the statistical property of the sorting algorithm to the real radar repeated frequency,causing the reconnaissance system to produce errors or false radar signal repeated frequency,so as to realize the electromagnetic protection of high-value targets.