摘要
该文由Ｇｒｅｅｎ恒等式出发，推导了二维任意截面反对称各向异性媒质柱的电场边界积分方程．将表面场及其法向导数按边界单元作分段常数基展开，并对Ｇｒｅｅｎ函数作点配置，转化为线性代数方程组，据以计算反对称各向异性媒质的圆柱、正方柱和正三角柱的单站和双站雷达散射截面．对于圆柱和正方柱的情况，文中方法以较少的计算量获得与混合场边界积分方程法相一致的计算结果．
In this paper,the electrical field boundary integral equations for the arbitraryshaped two-dimensional homogeneous asymmetrically anisotropic cylindricalmedium are derived based on Green’s theorem. On applying the pulse-functionexpansion and,the point-matching technique,the integral equations can beconverted into liner algobraical equations.The monostatic and bistatc radar crosssections of asymmetrically anisotropic circular,square and trianglar cylinders arecalculated.
出处
《应用科学学报》
CAS
CSCD
1994年第1期32-40,共9页
Journal of Applied Sciences
关键词
边界元
各向异性媒质
电磁散射
boundary element methed,anisotropic medium,electromag-netic scattering,two-dimensional scattering,radar cross section.
