对调频斜率极性捷变SAR间歇采样转发干扰效果分析  

Analysis of jamming effect on intermittent sampling repeater jamming to CRPJ-SAR

作　　者：张静克[1] 代大海[1] 邢世其[1] 王雪松[1] 肖顺平[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》2015年第5期1029-1034,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：研究了间歇采样转发干扰对调频斜率极性捷变合成孔径雷达(chirp rate polarity jittered-synthetic aperture radar,CRPJ-SAR)的干扰效果。建立了CRPJ-SAR间歇采样转发干扰信号模型,通过推导得到干扰的成像输出以及假目标位置和幅度的解析计算公式。结果表明间歇采样转发干扰不仅能够在距离向形成等间隔分布的多阶假目标,而且当假目标阶数不为零时,在同一距离向存在3个沿方位向等间隔分布的假目标。仿真验证了理论分析的正确性。Jamming effect on intermittent sampling repeater jamming to chirp rate polarity jittered SAR （CRPJ-SAR）is investigated. The intermittent sampling repeater jamming model of CRPJ-SAR is built, the ima- ging result of jamming is derived, and analytical formulas to calculate the locations and amplitudes of false tar- gets are given. The image result shows that the jamming can produce multiple order false targets in range direc- tion, and when the order is unequal to zero, there are three false targets which spreads along the cross range di- rection in equal interval at the same range direction. The correctness of the theoretical analysis is validated fur- ther by simulation experiments.

关 键 词：合成孔径雷达 调频斜率极性捷变 间歇采样 多假目标 

分 类 号：TN959.1[电子电信—信号与信息处理]