基于微动调制的SAR新型复合有源干扰方法  

Novel Method of Composite Active Jamming for SAR Based on Micro-Motion Modulation

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,湖南长沙410073

出　　处：《现代防御技术》2011年第4期84-89,117,共7页Modern Defence Technology

基　　金：国家自然科学基金(60875019)

摘　　要：在静态虚假目标的基础上,利用有源运动调制干扰原理,提出了一种基于微动调制的SAR新型复合有源干扰方法。建立了基于微动调制的复合有源干扰信号模型,详细分析了该干扰信号对SAR的干扰效果,确定了各调制系数,最后进行了基于实测数据的仿真实验。结果表明,该方法具有距离向相干处理和方位向部分相干处理的特点,可对SAR在方位向上实现多个匀(加)速虚假运动目标的欺骗干扰效果。Founding on the immobile pseudo target and making use of the active motion modulation jamming principle, a novel composite active jamming method is proposed based on micro-motion modulation. Composite active jamming signals model has been established, the jamming effect on SAR has been analyzed in detail and several modulating coefficients have also been determined. Finally, simulation experiments have been done based on the raw data. The result shows that this method processed the echo coherently in the range direction and partially coherently in the azimuth direction, which can produce the deceptive jamming of multiple uniform or uniformly accelerated pseudo mobile targets in the azimuth direction of SAR.

关 键 词：合成孔径雷达 微动 有源干扰 虚假运动目标 欺骗干扰 

分 类 号：TN972.1[电子电信—信号与信息处理] TN958[电子电信—信息与通信工程]