对合成孔径雷达的脉间分段移频干扰  

Interpulse subsection-shift-frequency jamming to SAR

作　　者：吴晓芳[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,湖南长沙410073

出　　处：《航天电子对抗》2010年第1期53-57,共5页Aerospace Electronic Warfare

基　　金："十一五"武器装备预先研究项目(513040305);国家自然科学基金项目(60672033)

摘　　要：提出了一种脉间分段移频干扰新样式,详细分析了其干扰原理、成像结果以及干扰效果的变化特性;讨论了几种典型干扰参数下的不同输出形式以及侦察参数误差对干扰效果的影响,从中归纳出分段移频干扰是固定移频干扰、步进移频干扰、随机移频干扰等多种移频干扰样式的统一形式。理论推导和仿真分析表明,该干扰可达到对真实图像进行有效欺骗的目的。A novel interpulse subsection-shift-frequency jamming （SSFJ） is proposed. Then its jamming principle, imaging output and the changing relationship of its jamming performance with modulation parameters are analyzed in detail. Afterwards different jamming output forms with several typical kinds of jamming param eters and the influence of reconnaissance errors on the jamming performance are discussed. From all above,it can be concluded that SSFJ is the uniform form of the fixed shift frequency jamming, stepped shift frequency jamming randomly shift frequency jamming and so on. This research is an enrichment of the shift-frequency jamming theories for SAR. The theoretical derivation and the simulation analysis indicate that this novel jamming can effectively deceive the real SAR image.

关 键 词：合成孔径雷达 线性调频脉冲 移频干扰 脉间分段 

分 类 号：TN974[电子电信—信号与信息处理]