对STAP雷达的投散射式干扰可行性研究分析

Feasibility Analysis for STAP Radar Scatter Wave Jamming

针对空时自适应处理器的投散射式干扰方法,本文着重研究该干扰方法的可行性问题。空时自适应处理技术具有卓越的杂波抑制能力和抗干扰能力,传统的干扰方法较难产生有效的干扰效果,而投散射式干扰能够产生具有空时二维矢量特性的信号,干扰效果显著。但该干扰方法因地面散射特性会导致干扰功率下降,本文通过分析投散射式干扰的基本原理和几何空间布局,分析了干扰信号与杂波的等距离环解析式,提出了距离单元中各类信号空间全向回波功率的数学计算模型,仿真研究了投散射式干扰的可行性。实验仿真结果证明,投散射式干扰方法是可行有效的。

The feasibility analysis of scatter wave jamming method for space-time adaptive processing （STAP） is proposed. Thanks to the excellent clutter rejection ability and anti-jamming performance of STAP, traditional jamming method hardly produce effective results, while the scatter wave jamming has significant effects for STAP owing to the two dimension vector characteristic of the jamming signals. However, jamming power would come down because of the ground scatter features. The equidistance ring analysis formula of jamming signals and clutter is proposed by considering the ultimate principles and the spatial geometrical layout of scatter wave jamming. The spatial omni-directional echo power mathematical model of all kinds of signals in range cell is put forward. The feasibility analysis is simulated in computer. The simulation results show that the jamming method is feasible and effective.