散射增强箔条雷达特性研究

文中提出一种基于角反射器的箔条雷达散射特性增强方法,旨在通过增强单根箔条的散射特性,利用有限数量的箔条实现海量箔条云团的雷达散射截面积（radar cross section,RCS）.在传统"偶极子"箔条的基础上,利用圆板角反射器结构的强散射特性来增强箔条的电磁散射.同时,为了兼顾各个方向上的电磁散射,利用多个圆形角反射器拼接成为外轮廓为球形的强散射结构,通过调节球形结构的半径,可以实现对单个箔条和箔条阵列RCS的控制.最后,将单个箔条组成阵列,形成新型箔条结构.对工作频率、入射角度、球形包络半径等不同参数下基于角反射器散射增强的箔条雷达散射特性进行了仿真分析,结果表明利用新型箔条散射增强结构,能使单根箔条的RCS增大30 dBm2以上.

Radar scattering characteristics of scattering enhanced chaff

This paper presents a method to enhance the scattering characteristics of chaff radar based on Angle reflector. Based on the traditional "dipole" chaff, the electromagnetic scattering of chaff is enhanced by the strong scattering characteristics of the circular plate angle reflector. At the same time, in order to take into account the electromagnetic scattering in all directions, a number of circular angular reflectors are combined to form a spherical strong scattering structure with the outer contour. By adjusting the radius of the spherical structure, the radar cross section(RCS) of a single chaff and chaff array can be controlled. Finally, an array of single chaff is formed for a new chaff structure. In this paper, the scattering characteristics of chaff radar under different parameters such as working frequency, incidence angle, spherical envelope radius and so on, which are enhanced by angular reflector scattering, and the results show that the RCS of a single chaff could be increased by more than 30 dBm2 by using the new chaff scattering enhancement structure.