基于微动调制的间歇采样转发干扰研究  

Micro Motion Modulation-Based Intermissive Sampling and Repeating Jamming Method

作　　者：刘业民[1] 刘忠[1] 代大海[1] 王雪松[1] 

机构地区：[1]国防科学技术大学电子科学与工程学院,长沙410073

出　　处：《宇航学报》2011年第11期2417-2424,共8页Journal of Astronautics

基　　金：国家自然科学资金资助课题(60875019)

摘　　要：文中提出了一种基于微动调制的间歇采样转发干扰方法,其基本思想是:干扰机对接收到的雷达信号在方位向调制匀速转动附加指数相位增量,在距离向进行间歇采样,再把干扰信号转发给雷达。研究了该干扰方法对合成孔径雷达(SAR)的干扰效果,分析了各关键干扰参数对干扰效果的影响以及干扰功率与干信比,最后进行了基于实测数据的仿真实验。分析表明,该干扰方法具有在距离向和方位向部分相干处理的特点,根据调制的各关键干扰参数的不同可对SAR实现二维欺骗干扰和压制干扰的干扰效果,且相对于常规射频噪声压制干扰而言,有一定的干扰功率优势。A kind of intermittent sampling and repeating jamming method based on micro motion modulation is proposed. The basic idea is that the jammer modulates affixal exponential phase increment of uniform rotation in the azimuth direction and processes intermittent sampling in the range direction of received radar signal, and then sends the jamming signal to the radar. Several key jamming parameters affecting the jamming effect on SAR is analyzed, jamming power and jam-signal ratio （JSR） are discussed, and simulation experiments are done according to the raw data as well. The result shows that the jamming method processes the echo partially coherently in the range direction and in the azimuth direction, and it can produce two-dimensional deceptive jamming or suppression jamming according to the key jamming parameters. Furthermore, it has some advantages in jamming power in comparison with conventional radio-frequency of suppression jamming.

关 键 词：SAR 微动 间歇采样转发干扰 二维欺骗干扰 压制干扰 

分 类 号：TN972.3[电子电信—信号与信息处理] TN974[电子电信—信息与通信工程]