摘要
本文介绍了一种计算目标绕射系数的通用数值方法──根据时域有限差分（ＦＤＴＤ）方法提供的散射场，通过联立方程组求解绕射系数。所述方法对二维ＴＭ、ＴＥ波均适用。有无涂层情况下金属条板绕射系数的计算例子表明该方法是可行的。
A numerical method for determining diffraction coefficients for edge of half-infinite metallic plate is described. We use the Finite-difference Time-domain (FDTD) method to compute the scattered field of an object possessing several scattering centers. The numerical diffraction coefficient of the scattering center under investigation is then isolated by solving simultaneous equations established based on GTD consideration. This method yields numerical diffraction coefficients for the edge of conducting strip and the one partially or fully coated by absorbing material for which the analytical diffraction coefficients are not known to our knowledge. Some examples show the feasibility.
出处
《电子学报》
EI
CAS
CSCD
北大核心
1996年第3期27-31,共5页
Acta Electronica Sinica
基金
电子部电科院基金
国防科工委基金
关键词
绕射系数
涂层金属条板
电磁波
Diffraction coefficient,Numerical method,FDTD method,Coated strip
