多径效应下雷达抗有源压制干扰研究

Research on radar anti-active suppression jamming under multipath effect

为研究多径效应对雷达抗有源压制干扰的性能,首先基于无干扰条件下多径效应对雷达探测性能的影响,定量分析多径效应影响下压制干扰对目标回波和干扰信号的影响;然后研究多径效应对频率分集和旁瓣匿影两种抗干扰措施的影响;最后进行了对应仿真.仿真结果表明,在有源压制干扰下,多径效应会扩大雷达干扰压制区,影响干扰信号强度以及雷达的抗干扰性能,造成上述两种措施抗干扰性能的不稳定.

In order to study the performance of the multipath effect on radar's anti-active suppression jam-ming,based on the influence of the multipath effect on radar detection performance under the condition of no in-terference,this paper first quantitatively analyzes the influence of suppression jamming on target echo and jam-ming signal under the influence of multipath effect,and then studies the influence of multipath effect on the two kinds of anti-jamming measures of frequency diversity and sidelobe blanking.Finally,the paper makes the corre-sponding simulation.The simulation results show that under the active suppression jamming,multipath effect will expand the radar jamming suppression area,and affect the jamming signal strength and the radar’s anti-jamming performance,thus causing the anti-jamming performance of the above two measures to be unstable.