用MEI方法计算电大尺寸非均匀各向异性涂覆媒质导体柱

本文运用有限差分技术，构造出非均匀各向异性媒质曲边网格的五点差分方程，借助不变性测试方程（ＭＥＩ）这一新概念，成功地计算了电大尺寸任意厚度涂覆媒质的导体柱的ＲＣＳ特性。在截断边界上采用ＭＥＩ方程，使得截断边界十分接近散射体表面，从而使计算占用计算机的内存大大减少，同时与矩量法相比，还显著缩短了计算时间。本文在微机上计算的电大尺寸柱体周长达１２０个小长，是一般方法无法比所的。

Analysis of Electrically Large Conducting Cylinder Coated with Inhomogeneous Anisotropic Media

Finite difference equation for curved meshes filled with anisotropic inhomogeneous media is derived in this paper. The concept of measured equation of invariance is used for calculating RCS of electrically large conducting cylinder coated with the media of arbitrary thickness. The MEI equation is applied to the truncation boundary, which makes the truncation boundary very close to the scattering surface, thus reduces the memory requirements and saves CPU time compared with the MoM. The circumference of the cylinder dealt with arid calculated on the PC accesses 120 wavelengths, which is almost impossible to deal with by other methods.