SAR散射波干扰实现方法的研究

根据SAR信号的传播过程和散射波干扰原理，提出了一种散射波干扰的实现方法——干扰机转发地物散射波干扰，即干扰机接收到经地物散射的SAR信号，向SAR接收系统转发，形成散射波干扰。通过分析干扰信号的数学模型，证明了干扰机转发地物散射波干扰信号与干扰机转发SAR信号散射波干扰信号具有相同的数学模型，且能够在距离向和方位向实现二维相干干扰，使SAR图像模糊。最后通过计算机仿真验证了干扰机转发地物散射波干扰的干扰效果。

Method of Implementing Scatter-wave Jamming Signal to SAR

Based on the process of the SAR signal propagation in space and the principle of scatter-wave jamming , a new realization method of scatter-wave jamming was provided , i.e. jamming by transmitting scatter-wave to SAR . By analyzing its mathematic model , it was testified that this jamming signal has the same mathematic model with jamming signal generated by transmitting original SAR signal directly to ground. This jamming method can realize two-dimensional jamming in range and azimuth, and cause the SAR image ambiguous. SAR image with jamming was generated by means of simulation processing of echoes with jamming signals, which was generated by the new method. The effect of the jamming methods was testified.