多级旋转式角反射器阵列电磁散射特性分析

Analysis of electromagnetic scattering characteristics of multistage rotary corner reflector array

为了提升对地面重要目标的末端防护能力及战场生存能力,本文给出了一种雷达散射截面(radar cross section,RCS)特性可调的新型角反射器结构,并基于此完成了多级旋转式角反射器阵列设计.此阵列由多个双层叠加的阵列单元组成,其中每个角反射器可绕中心轴进行旋转,并且内部反射叶片也可进行旋转,从而实现对角反射器及阵列不同角度RCS特性的调节.基于CST软件对典型线性及圆形两种阵列形式的RCS特性进行了建模及仿真分析,并针对阵列不同布设间隔以及俯仰角度情况的周向RCS特性进行了寻优分析,仿真结果验证了多级旋转式角反射器阵列RCS灵活多变的特性,为地面重要目标的末端防护提供了一种思路.

In order to improve the terminal protection ability and battlefield survivability of important targets on the ground,a new corner reflector structure with adjustable radar cross section(RCS)characteristics is presented in this paper.Based on this,a multistage rotary corner reflector array design is completed.The array is composed of multiple double layer superimposed array units,in which each corner reflector can rorate around the central axis.The internal reflector blade can rotate,so as to realize the adjustment of RCS characteristics.At the same time,based on CST software,the RCS characteristics of linear and circular arrays are modeled and simulated.And the optimization analysis is carried out for the array layout interval.The simulation result proves that the RCS of the multistage rotary corner reflector array can be changed flexibly.So the passive false target jamming effect can be generated flexibly according to different protection requirements.The effective protection of important targets on the ground can not be realized.