一种针对高脉冲丢失率的PRI估计方法

A PRI estimation method for high pulse missing rates

信号分选是电子侦察的重要组成部分之一,信号分选的正确与否直接关系到电子侦察系统的性能指标,其中脉冲重复间隔(PRI)估计是信号分选中最重要的一个环节。随着各种新体制雷达技术的应用以及电磁环境越来越复杂,电子侦察系统的截获概率严重下降,脉冲丢失率变得非常高,脉冲间的连续性被严重破坏,雷达辐射源的PRI特性显著下降,再想要正确地估计出雷达辐射源的PRI变得非常困难。针对这种情况,提出了一种针对高脉冲丢失率的PRI估计方法,该方法采用基于带容差的最大公约数法进行PRI估计,能够在高脉冲丢失率的场景下显著提升信号分选的正确率。

Signal sorting is an important part of electronic reconnaissance,and the correct or incorrect signal sorting directly affects the performance of the electronic reconnaissance system.The pulse repetition interval(PRI)estimation is the most important part in the signal sorting.With the application of various new radar technology and electromagnetic environment becoming more and more complex,the probability of interception of electronic reconnaissance system is seriously reduced,the pulse loss rate becomes very high,the continuity between the pulses is severely disrupted,and PRI feature of radar emitter is significantly reduced.It is extremely difficult to correctly estimate PRI for the radar emitter.For this situation,a PRI estimation method for high pulse missing rates is proposed.This method uses the maximum common divisor method with tolerance to implement PRI estimate,and it can significantly improve the accurate of signal sorting in high pulse missing rates scenarios.