ELECTROMAGNETIC SCATTERING BY SURFACES OF ARBITRARY SHAPE
ELECTROMAGNETIC SCATTERING BY SURFACES OF ARBITRARY SHAPE
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DOI：
10.1109/tap.1982.1142818
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发表时间：
1982-01-01
影响因子：
5.7
通讯作者：
GLISSON, AW
中科院分区：
文献类型：
--
作者：
RAO, SM;WILTON, DR;GLISSON, AW
利用电场积分方程和矩量法，发展了一种简单有效的数值计算方法来处理任意形状目标的散射问题。为了数值计算的目的，使用平面三角形曲面片对对象进行建模。由于使用了EFIE公式，该程序适用于开放和封闭曲面。数值公式的关键是一组特殊的子域型基函数的发展，这是对相邻的三角形补丁定义，并产生一个当前的表示自由的线或点电荷在子域边界。将该方法应用于平面波照射下的平板、弯曲平板、圆盘和球体的散射问题。在每种情况下，通过本方法计算的表面电流和通过以前的方法或精确配方获得的表面电流之间的良好对应关系被证明。
The electric field integral equation (EFIE) is used with the moment method to develop a simple and efficient numerical procedure for treating problems of scattering by arbitrarily shaped objects. For numerical purposes, the objects are modeled using planar triangular surfaces patches. Because the EFIE formulation is used, the procedure is applicable to both open and closed surfaces. Crucial to the numerical formulation is the development of a set of special subdomain-type basis functions which are defined on pairs of adjacent triangular patches and yield a current representation free of line or point charges at subdomain boundaries. The method is applied to the scattering problems of a plane wave illuminated flat square plate, bent square plate, circular disk, and sphere. Excellent correspondence between the surface current computed via the present method and that obtained via earlier approaches or exact formulations is demonstrated in each case.