基于微动调制的InSAR有源干扰方法  

Active jamming method for InSAR based on micro motion modulation

作　　者：张静克[1] 代大海[1] 邢世其[1] 肖顺平[1] 李永祯[1] 

机构地区：[1]国防科学技术大学电子信息系统复杂电磁环境效应国家重点实验室,湖南长沙410073

出　　处：《系统工程与电子技术》2014年第4期661-666,共6页Systems Engineering and Electronics

基　　金：国家自然科学基金(61302143);国家高技术研究发展计划(863计划)(2013AA122202)资助课题

摘　　要：鉴于微动调制能够有效地对合成孔径雷达(synthetic aperture radar,SAR)进行干扰,研究基于微动调制干涉合成孔径雷达(interferometric synthetic aperture radar,InSAR)有源干扰方法。基于InSAR信号模型研究了微动调制干扰对InSAR的干扰原理,进一步分析了干扰效果与关键干扰参数之间的关系,并利用仿真进行了验证。研究表明,该干扰方法能够在InSAR图像中形成沿方位向分布的形似"连续的栅栏"或"离散的栅栏"的多假目标,"栅栏"的间隔和长度由微动调制参数决定,"栅栏"的高度由干扰机的高度和发射功率共同决定。Based on the fact that micro motion modulation can disturb synthetic aperture radar （SAR） effectively, an active jamming method for interferometric synthetic aperture radar （InSAR） is studied. Based on the signal models of InSAR signal processing, principles of the jamming are derived. Then, the relationship between key jamming parameters and the effect is analyzed. Furthermore, the conclusion is verified via simultion. The result shows that the jamming method can produce multiple false targets along the azimuth direction in InSAR imagry, which appear as ＂continuous barriers＂ or ＂discrete barriers＂. The interval and length of the ＂barriers＂ rely on the paremeters of micro motion modulation, and the height of the ＂barriers＂ depends on the height of the jammer and the jamming power.

关 键 词：合成孔径雷达 干涉合成孔径雷达 微动调制 干涉相位 多假目标 

分 类 号：TN959.1[电子电信—信号与信息处理]