摘要
针对雷达主瓣干扰传统的抗干扰无法有效对抗的问题,提出一种盲源分离和阻塞矩阵联合抗主瓣干扰算法。利用阻塞矩阵抑制主瓣干扰接收,然后采用矩阵联合对角化特征矢量算法进行盲源分离,进而达到目标检测的目的。仿真实验表明,在不同信噪比条件下,该算法相比盲源分离算法在干扰位于1/2主瓣波束宽度内时,脉压后峰值信噪比改善明显,且对主瓣干扰方向估计的精度要求较低,具有较强的鲁棒性。
To counter main lobe jamming,an algorithm based on blind source separation（ BSS） and blocking matrix（ BM） joint processing is proposed. The arrival of main-lobe jamming angel is estimated;the BM is used to prevent main-lobe jamming receiving; the joint approximation diagonalization of eigen matrices（ JADE） is used to separate sources. The experiment of simulation indicates that the new algorithm has greater peak SNR than BSS when the jamming locates in 1/2 beam width,and improves the radar detection performance largely. Even there exists a main-lobe interference direction estimation error,the new algorithm still has good anti-interference ability.
出处
《现代防御技术》
2018年第1期135-140,共6页
Modern Defence Technology
关键词
主瓣干扰
抗干扰
盲源分离
阻塞矩阵
波束宽度
峰值信噪比
mainlobe jamming
jamming suppression
blind source separation
blocking matrix
beam width
peak signal noise ratio
