涂层目标散射的双站物理光学公式及其散射矩阵

本文从物理光学基本假设与阻抗边界条件出发，建立了涂覆雷达吸波材料（ＲＡＭ）的任意三维光滑凸型导电物体散射的基本双站公式。公式是从Ｆｒｅｓｎｅｌ反射系统及阻抗边界条件推导的。本文同时得到了涂层物体表面入射场及其同几何结构导体表面入射场之间的关系与电、磁流比系数关系。文末给出了用基本双站公式计算电大物体双站散射矩阵与双站散射截面的计算方法与计算实例。

The Physical Optics Bistatic Formulae and Matrix from Coated Bodies

From the physical optics assumption and Leontovich Impedance Boundary Condition (IBC) ,we build up the bistatic formulae of the electromagnetic field scattered from three dimensional conduct object coated with radar absorb materials(RAM) with an arbitrary smooth convex shape.This problem is formulated in terms of Fresnel reflect coefficients and IBC. The interrelation of twoincident fields between the coated surface and the conducting surface of the same configuration,as well as the coated surface electromagnetic current ratio coefficients are also derived. At last,the computational method of bistatic scattering matrix and bistatic cross section from electrically large coated bodies is given for non-edge structures.