SAR的箔条干扰技术研究  

A Study on Chaff Jamming Technology of SAR

作　　者：吴晓芳[1] 李金梁[1] 邢世其[1] 王雪松[1] 卢焕章[1] 

机构地区：[1]国防科技大学电子科学与工程学院,长沙410073

出　　处：《现代雷达》2010年第7期58-62,共5页Modern Radar

基　　金：国家自然科学基金资助项目(60672033)

摘　　要：结合合成孔径雷达(SAR)成像原理和箔条干扰机理,研究了SAR的箔条干扰技术。首先分析了箔条的散射截面积、极化方式、干扰信号带宽以及互耦效应等。结合SAR探测中箔条形成过程中状态的不同,分留空和落地2个阶段进行讨论,开展了箔条云的散射特性、分布特性和遮挡效应的研究。给出了2个阶段箔条回波信号建模与仿真方法,研究结果有效体现了SAR系统的工作特点。The chaff jamming technology is studied in detail by combining synthetic aperture radar （SAR） imaging principles and chaff jamming mechanism. Firstly the radar cross section, polarization mode, jamming signal bandwidth and mutual coupling effect of the chaff are analyzed. According to the difference of the chaff generative process during SAR imagery, the scattering characteristics, distribution characteristics and shielding effects of the chaff are studied within two phases as staying in the air and falling to the ground. The modeling and simulation method of chaff echo signal is given, and the research result reflects the working features of SAR system.

关 键 词：合成孔径雷达 箔条干扰 回波模型 散射特性 分布特性 遮挡效应 

分 类 号：TN972.41[电子电信—信号与信息处理]