基于间歇采样的合成孔径雷达目标有源隐身方法  

Active cancellation method against synthetic aperture radar based on intermittent sampling

作　　者：徐乐涛[1] 冯德军[1] 王雪松[1] 

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

出　　处：《电波科学学报》2016年第1期31-38,共8页Chinese Journal of Radio Science

基　　金：国家自然科学基金(61372170;61490690)

摘　　要：基于间歇采样,从理论上提出了一种新型合成孔径雷达目标有源隐身方法.对有源对消信号作间歇采样处理,间歇采样后的对消信号不仅可以对消真实目标回波信号,还可以在合成孔径雷达(Synthetic Apertare Radar,SAR)图像上形成二维多假目标.文中给出了合成孔径雷达目标有源隐身的基本原理,从理论上推导了基于间歇采样的有源隐身方法.在此基础上,研究了对消信号参数误差以及间歇采样关键参数对有源对消和假目标生成的影响,给出了影响有源对消和二维假目标分布的关键因素,最后进行了仿真验证.A novel active cancellation method against synthetic aperture radar（SAR）is proposed theoretically based on the intermittent sampling.The cancellation signal is intermittent sampled to form the desired jamming signal.The jamming signal can both cancel the real target echo and form verisimilar false targets on SAR image simultaneously.First,the basic principles of SAR target active cancellation are introduced.Then,the active cancellation method based on intermittent sampling is theoretically derived.On this basis,the effects of the parameter error and key intermittent-sampling parameters on active cancellation and false-targets generation are studied.The key factors affecting the active cancellation and the distribution of two-dimensional false targets are also given.Simulation results verify the effectiveness of the proposed method.

关 键 词：间歇采样 合成孔径雷达 有源对消 二维假目标 

分 类 号：TN958[电子电信—信号与信息处理]