宽带SAR子带脉冲循环转发干扰  

Wideband SAR LFM Signal with Sub Band Pulse Repeated Transmitting Jamming

作　　者：陈立明[1] 沈爱国[1] 姜秋喜[1] 

机构地区：[1]电子工程学院,安徽合肥230037

出　　处：《现代防御技术》2010年第4期100-104,共5页Modern Defence Technology

摘　　要：宽带SAR利用脉冲压缩获得距离向高处理增益,同时利用合成孔径技术获得方位向的处理增益,常规的噪声干扰难以奏效。利用频带匹配的相干干扰信号虽然可以获得较好的干扰效果,但现有器件条件下难以产生足够高的干扰信号功率。子带脉冲循环转发干扰技术利用子带脉冲与雷达信号的部分相关特性,获取一定的处理增益,在一定程度上提高了干扰功率的利用效率。理论分析和仿真结果表明,脉间去相关的子带脉冲循环转发干扰可以形成较好的压制干扰,具有更好的使用价值。Wide band （WB） SAR can get very high gain from both the pulse compress and synthetic aperture technique. The noise jamming is disabled to the wide band SAR. The coherent jamming signal with the same or larger band sometimes can jam the WB SAR effectively. However, it is difficult to generate high enough jamming power in such a wide band. A novel method which can jam the UW SAR with a repeated sub band signal is put forward here. The sub band jamming signal can get a certain gain for it is coherent with the radar signal partly. The analysis results and simulations has proved that the method can jam the UW SAR effectively.

关 键 词：宽带 合成孔径 干扰 线性调频信号 子带脉冲 

分 类 号：TN958[电子电信—信号与信息处理] TN972[电子电信—信息与通信工程]