主要研究了对SAR的噪声干扰，分析了点目标回波的信噪比以及SAR信号处理的增益，在此基础上建立了两种干扰噪声的模型。最后，通过建立的干扰噪声模型对点目标进行了干扰验证，验证两种干扰噪声模型干扰的有效性。

In this paper, we study the noise jamming to the point target of SAR. First, SNR of point target echo and gain of SAR signal processing are analyzed in detail. Then, two kinds of jamming noise models are also analyzed in detail. Based on these analyses, simulations on SAR point target noise jamming are made. The results show that the two models are effective.

TN958