基于正弦调频转发的合成孔径雷达干扰

摘要

从线性调频信号加入正弦调频干扰入手，分析了干扰信号的频谱特点和干扰效果。发现正弦调频干扰有产生虚假目标多、功耗低的特点。且在二维干扰的情况下能产生大面积多虚假目标，能有效地对真实目标进行遮盖。还分析了调制参数变化对干扰效果的影响，并且用仿真实验验证了理论的正确性。%After putting sinusoidal frequency modulation jamming signal into LFM, the characteristic of jamming signal＇s frequency and the jamming effect are analyzed, and it makes more fake targets with lower power by this method. It can produce many fake targets lay on large area under the condition of planer sinusoidal frequency modulation, so that the real targets could be covered up effectively. The different results by the different modulation parameters are also analyzed, and the correctness of the method is proved by the simulation.