SAR方位向多普勒调制干扰  

Doppler Modulation Jamming in Azimuth to SAR

作　　者：吴晓芳[1] 代大海[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10期55-60,共6页Modern Radar

基　　金：国家自然科学基金资助项目(60672033)

摘　　要：从分析合成孔径雷达(SAR)的回波信号特点以及线性调频信号方位向时延和多普勒频移的耦合特性出发,提出了基于多普勒调制的SAR方位向干扰方法。根据多普勒调制方式的不同,新的干扰可获得距离向处理增益和部分方位向处理增益,形成方位向的虚假单点目标、多点目标、线条目标、多段线条目标等干扰效果,因干扰回波具有动态特征,也可有效对抗合成孔径雷达-地面运动目标指示,是一种灵活多样的SAR方位向欺骗式干扰方法。After the analysis of the echo features for Synthetic Aperture Radar（SAR）,a novel azimuth jamming method based on complex Doppler modulation to SAR is proposed by utilizing the coupling relationship between the azimuth delay time and Doppler frequency shift.The jamming signal is processed coherently in range and partially coherently in azimuth,and can produce single point false target,multiple point false targets,single line false target and multiple line false targets.Besides,the jamming signal can confront SAR-GMTI because of the additional Doppler information.The proposed method is a flexible and multiform deception jamming method in azimuth to SAR.

关 键 词：合成孔径雷达 方位向干扰 多普勒调制 线性调频 

分 类 号：TN958[电子电信—信号与信息处理]