移频干扰在动目标检测中的效果分析  

Study of shift-frequency jamming way for moving target detection adopting ATI

作　　者：朱燕[1] 赵国庆[1] 崔艳鹏[1] 

机构地区：[1]西安电子科技大学电子工程学院,陕西西安710071

出　　处：《航天电子对抗》2009年第2期55-57,64,共4页Aerospace Electronic Warfare

摘　　要：讨论了由两天线SAR的干涉图像对地面动目标进行检测的原理,根据线性调频信号的时频强耦合性及目标回波的特点,在接收到的雷达发射信号上进行距离和方位向移频处理,继而转发。经仿真分析,在干扰能量较大的情况下,在假目标基础上进行的移频干扰可以产生假的动目标,进行欺骗干扰。在雷达发射信号上进行随机时延、频移及相移可使得真实动目标丢失或者检测出现错误,产生遮盖性干扰。The principle of moving targets detection using the dual-channel images is discussed. The relationship between frequency and time is analyzed. Then the two-dimension shift-frequency jamming is added to change transmitting signals＇ frequency and phase and retransmitted. By the simulation,at a high noise-signal rate it produces deception jamming by shifting frequency and phase of false targets. If adding random time-delay, frequency and phase-increase to radar transmitting signal, some real targets is lost and some false targets appear,Or covering jamming is produced the parameters are wrong of some detection moving targets.

关 键 词：电子对抗 移频干扰 动目标显示 沿航迹干涉 

分 类 号：TN974[电子电信—信号与信息处理]