盲源分离算法应用于抗雷达多假目标干扰  

Blind Source Separation Applied on Radar Multiple False Targets Jamming Suppression Technique

作　　者：王文涛 李永彬[1] 刘科 李俊瑶[1] 

机构地区：[1]西安卫星测控中心,陕西渭南714000

出　　处：《电子信息对抗技术》2017年第6期66-72,共7页Electronic Information Warfare Technology

摘　　要：多假目标干扰是与目标信号强相关的欺骗干扰信号,其对准雷达天线主瓣方向,会严重影响雷达的性能,通常的旁瓣抗干扰技术和一些主瓣抗压制干扰技术难以奏效。针对目标和干扰信号的相对独立性以及在空域上的差异性,提出利用盲源分离(Blind Source Separation,BSS)算法抗脉冲压缩雷达多假目标干扰的方法。首先给出了假目标干扰原理和主瓣干扰信号模型;其次利用经典的BSS算法分离接收到的主瓣干扰混合信号,并脉压找出目标信号达到抗干扰的目的;最后分析了目标与多假目标干扰混合信号的可分离性。仿真实验表明,该方法对多假目标干扰有良好的抗干扰性能。The multiple false targets jamming which has high correlation with the target signal would severely degenerate the performance of radar when it pour into the mainlobe of radar antenna. It is no effect for some common ECCM measures of sidelobe and mainlobe jamming suppression technique. In consideration of the independence between echo signal and interference,as well as the otherness of them in airspace domain,the technique is presented of multiple false target jamming suppression for pulse compression radar based on blind source separation algorithm. The principle of the multiple false targets and the signal model of mainlobe jamming are given first of all. Secondly the mixed interference and target signal is separated by some classical blind source separation algorithm. And the target signal is found out by applying the pulse compression technique to realize the objective of suppressing the interference. The feasibility of the method that the mixed multiple false target and target signal is separated by blind source separation algorithm is analyzed in the end. The theoretical analysis and experiment results indicate that this technology achieves a favorable effect in suppressing the multiple false targets jamming.

关 键 词：多假目标干扰 主瓣干扰 盲源分离 脉冲压缩 信噪比 发现概率 

分 类 号：TN974[电子电信—信号与信息处理]