基于随机时延的弹射式干扰研究  

Rebound jamming based on random delay time to SAR

作　　者：张颂[1] 叶伟[1] 徐灿[1] 阮航[1] 陈志民[1] 

机构地区：[1]装备指挥技术学院,北京101416

出　　处：《航天电子对抗》2011年第5期23-25,共3页Aerospace Electronic Warfare

摘　　要：针对传统噪声压制技术对合成孔径雷达形成有效干扰需要功率比较大的特点,研究了一种随机时延的弹射式干扰方法。该方法是在传统的弹射式干扰基础上,采用随机的干扰机转发时延。由于采用随机时延,方位向不同的回波时延不同而不能被压缩,干扰信号的距离向的压缩虽能成像,但已经是随机分布的。改进后的弹射式干扰能够覆盖整个成像区域,形成类噪声干扰,对SAR进行有效压制干扰。Aiming at the characteristic of traditional noise blanket to SAR needing too much power,a rebound jamming realization scheme based on random delay time is studied.The method adopts random delay time of the jammer based on the traditional rebound jamming.As a result of adopting random delay,the echo with different azimuth direction can not be compressed,and the disturbing signal can be compressed to the image in the range direction,but it is random distributing.The improved rebound jamming can cover the whole imaging area.The method provides a good way to jam SAR.

关 键 词：合成孔径雷达 随机时延 弹射式干扰 射频噪声干扰 

分 类 号：TN958[电子电信—信号与信息处理]