对成像雷达的脉冲分段排序转发干扰

Jamming imaging radars based on pulse separation and retransmission

多假目标图像欺骗是目前宽带雷达干扰的难点。针对宽带雷达中常用的线性调频(Linear Frequency Modulated,LFM)信号,提出一种脉冲分段排序转发干扰方法。结合散射波信号模型,推导了合成干扰信号二维成像输出形式,讨论了假目标图像个数、分辨率与分段数以及转发次序之间的关系,并进行了仿真实验。结果表明该干扰方法可较便捷地产生多个沿距离向分布的假目标图像。结果对于成像雷达图像欺骗干扰具有理论指导意义。

Multiple false-target images deception is the thorny point in the jamming against broad-band imaging radars.A jamming approach of applying pulse separation is proposed and the retransmission the usual LFM signal of imaging radar is presented.Combined with the scatter-wave jamming model,the imaging of the jamming signal was expounded,and the ways to achieve a train false-target images along the down-range were analyzed.Based on the divided number and the retransmitted order,the number and the resolution of false-target images were described.Finally, the simulation results are presented and addressed.This work is helpful to the deception jamming against imaging radars.