基于中值对消ACSI算法的机载雷达杂波抑制研究  

Research on Airborne Radar Clutter Suppression Based on Median Cancellation ACSI Algorithm

作　　者：李哲 王伟[1] 赵娟 党腾飞 卢珊珊 LI Zhe;WANG Wei;ZHAO Juan;DANG Tengfei;LU Shanshan(Xi an Electronic Engineering Research Institute,Xi an 710100;Xi an Modern Control Technology Research Institute,Xi an 710065)

机构地区：[1]西安电子工程研究所,西安710100 [2]西安现代控制技术研究所,西安710065

出　　处：《火控雷达技术》2023年第1期151-157,共7页Fire Control Radar Technology

摘　　要：杂波抑制干涉(Clutter Suppression Interference,CSI)是一种常见的雷达信号处理方法,其高效抑制雷达接收回波中的地杂波干扰,可大大提高机载合成孔径雷达地面动目标指示(SAR/GMTI)的信杂噪比。然而,由于杂波抑制算法要实时进行大量滤波权系数的计算,因此其在工程中的实现较为困难。基于此研究背景,本文对机载雷达地杂波进行了建模,分析了CSI、ACSI(Adaptive Clutter Suppression Interference)和中值对消ACSI三种杂波抑制算法的原理和性能,并进行了工程实现。由工程实验结果可知,三种算法均可提高机载雷达信杂噪比,从而提高动目标识别能力,其中中值对消ACSI算法虚警概率最低,性能提升最大。As a common radar signal processing method,clutter suppression interferometry(CSI)can efficiently suppress ground clutter in target echoes received by radar,greatly improving the signal-to-clutter-plus-noise ratio of airborne synthetic aperture radar/ground moving target indication(SAR/GMTI)systems.However,the common clutter suppression algorithms need to calculate a large number of filtering weights in real time,so that it is difficult to implement them in engineering application.In this paper,an airborne radar ground clutter model is built.In addition,the principle and performance of three clutter suppression algorithms,namely CSI,adaptive clutter suppression interferometry(ACSI),and median cancellation ACSI are analyzed,followed by engineering implementation of these algorithms.The implementation results show that all of them can improve the signal-to-clutter-plus-noise ratio of airborne radar,so that the moving target recognition ability is improved.More importantly,the median cancellation ACSI algorithm has lowest false alarm probability and greatest performance improvement.

关 键 词：机载雷达 杂波抑制干涉 SAR-GMTI 中值对消ACSI算法 

分 类 号：TN958[电子电信—信号与信息处理]