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应用科学学报 ›› 1994, Vol. 12 ›› Issue (1): 32-40.

• 论文 • 上一篇    下一篇

边界元法计算二维反对称各向异性媒质柱的电磁散射

张明1, 章文勋2   

  1. 1. 东南大学;
    2. 国家毫米波重点实验室
  • 收稿日期:1991-07-20 修回日期:1992-01-25 出版日期:1994-03-31 发布日期:1994-03-31

COMPUTATION OF EM SCATTERING FROM 2-D ASYMMETRICALLY ANISOTROPIC CYLINDRICAL MEDIUM BY USING BOUNDARY ELEMENT METHOD

ZHANG MING1, ZHANG WENXUN2   

  1. Southeast University
  • Received:1991-07-20 Revised:1992-01-25 Online:1994-03-31 Published:1994-03-31

PDF

88

被引次数

5

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.

关键词: 电磁散射, 雷达截面积, 边界元法, 各向异性媒质, 二维散射

Abstract: In this paper,the electrical field boundary integral equations for the arbitrary shaped two-dimensional homogeneous asymmetrically anisotropic cylindrical medium are derived based on Green's theorem. On applying the pulse-function expansion and,the point-matching technique,the integral equations can be converted into liner algobraical equations.The monostatic and bistatc radar cross sections of asymmetrically anisotropic circular,square and trianglar cylinders are calculated.

Key words: boundary element methed, electromag-netic scattering, two-dimensional scattering, anisotropic medium, radar cross section