一种可灵活配置的密集假目标实现方法

摘要

随着现代雷达抗干扰能力的增强,遮盖式干扰和传统的单一假目标干扰的应用范围越来越有限,密集假目标干扰在雷达干扰中扮演着越来越重要的角色.利用分段重构法实现了密集假目标的生成,首先将雷达脉冲分段存储,再按照一定的时序读取存储器中的子脉冲信号段,然后通过加法器合成出密集假目标信号,最后利用FPGA实现了该方法.仿真结果表明,上述方法能灵活配置假目标个数和脉冲间隔,存储量和运算量占用率低,并与假目标个数及间隔无关.%With the enhancement of anti-interference ability of modem radar,the applications of cover interference and traditional single fake target interference are becoming more and more limited,and the dense fake target interference has more and more important role in the radar interference.In this paper,we use the method of segmentation and regroupment for producing dense fake target.First,dividing the received radar signal into small parts and storing them in different memories;Secondly,reading the sub-signal segment from the different memories and synthesizing the dense fake target signal by adder;Finally,implementing this method on FPGA.The simulation results show that the proposed method can be used to configure the number of fake targets and the pulse interval,and the storage capacity and the amount of computation are low and independent of the number of fake targets and pulse interval.