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