摘要
针对单脉冲比幅雷达的距离假目标欺骗干扰,研究了一种基于慢时域盲分离的欺骗干扰抑制方法。该方法在慢时域上建立雷达信号接收模型,首先验证了回波与干扰的可分离性,然后采用二阶统计盲源分离技术完成了回波和干扰的分离,最后通过微多普勒频率特征完成对真假目标的鉴别。仿真结果表明,该算法对欺骗干扰具有较好的抑制性能。当SNR>0dB时,回波相似系数大于98%,延迟时间测量误差小于0.03μs。
A deception jamming suppression method is presented based on blind signal separation （BSS） in slow-time domain to counter the range deception jamming in amplitude-comparison monopulse radar. Firstly, the separability of echo and jamming is discussed. Then, the second-order statistic BSS technology is used to separate the echo and jamming. Finally, micro-doppler features are utilized to recognize the target and deception jamming. The experiments validate the effectiveness of the proposed algorithm. When SNR 〉 0dB, the similarity coefficient of target echo is larger than 98 % and the measurement error of target delay is below 0.03 us.
出处
《电子信息对抗技术》
2013年第2期42-46,57,共6页
Electronic Information Warfare Technology
关键词
欺骗干扰抑制
二阶盲分离
微多普勒特征
deception jamming suppression
second-order blind signal separation
Micro-Doppler signature
