基于发射信号随机初相结合调频率极性捷变的SAR抗干扰方法

Anti-jamming Method Based on Transmitted Signal with Random Initial Phase and chirp rate Polarity jittered for SAR

针对合成孔径雷达(SAR)难以抑制场景散射欺骗干扰的问题,提出了将发射信号的随机初相和调频率极性捷变技术相结合的方法,使得干扰信号无法充分获得SAR处理器在距离向和方位向的压缩增益,提高了处理前后的信干比。仿真实验验证了该方法良好的抗干扰性能。

To suppress the terrain scattered jamming for SAR, a method by random initial phase and Polarity of chirp rate jittered of the transmitted LFM pulses is proposed. The output signal-to-jamming ratio is enhanced by making the jamming not get all the gains of range and azimuth matching filters. Simulation results testify the anti-jamming performance of this method.