基于延时多普勒对齐的组网雷达点源干扰抑制算法

Adaptive Signal Suppression Based on Delay-Doppler Alignment for Single Point Radiation Source in Radar Network

针对组网雷达被单点运动辐射源干扰情况下的目标检测问题,本文利用目标多角度回波在传播延时、多普勒以及散射特性上存在差异的特点,设计了一种基于干扰延时、多普勒对齐的自适应干扰抑制算法。本文首先建立了单点运动辐射源干扰条件下的组网雷达信号模型,其次对抑制算法进行了详细介绍,最后通过典型场景的仿真分析验证了所提算法的抑制效果。仿真结果说明,所提算法可以充分利用目标在距离多普勒域的稀疏特性,实现干扰的有效抑制。

In order to achieve effective target detection with a radar network interfered by a moving radiation source,an adaptive suppression method based on Delay-Doppler alignment is proposed in this paper.First of all,the signal model for a large baseline radar network interfered by a moving radiation source is built.Secondly,the adaptive suppression method is introduced in detail.Finally,the effectiveness of the method is verified via the simulation of a typical example.The results show that the proposed method can take advantage of the target sparsity in the range Doppler plane and realize effective interference suppression.