一种雷达主瓣欺骗干扰抑制算法

摘要

针对单通道雷达受到主瓣干扰,提出了一种基于多用期采样的抗主瓣干扰方法.首先针对距离密集假目标欺骗干扰,建立了基于多脉冲重复间隔(paulse repeat interval)采样的抗主瓣欺骗干扰模型并对其可行性进行证明,然后对信号源个数进行估计,最后借助提出的盲源分离方法将干扰信号与目标回波信号分离,达到抗干扰效果.理论分析和仿真表明,该方法具有较好的分离效果及干扰抑制能力.%A suppression method is proposed based on multi-period sampling and BSS algorithm.At first,the model of range dense false target mainlobe jamming suppression based on multi-period sampling is given and proved.Then the number of signal source is estimated.The target echo signal and interference signal are separated by BSS algorithm,which finally achieves jamming suppression effect.Theoretical analysis and computer simulation demonstrate that the proposed method has a good performance on both the mixture signal separation and the interference suppression.