计算物理光学积分的几种数值方法的分析  

An analysis of numerical methods for physical optics integral

作　　者：刘英[1] 赵维江[1] 龚书喜[1] 

机构地区：[1]西安电子科技大学天线与电磁散射研究所,陕西西安710071

出　　处：《西安电子科技大学学报》2001年第4期542-545,共4页Journal of Xidian University

基　　金：国家部委"九五"预研资助项目 ( 10 2 1 4)

摘　　要：分析了几种用于求解物理光学积分的数值方法 ,对其计算速度和准确性进行了评估 .用Gordon方法、驻相法、快速傅里叶变换方法分析了一个无穷薄的导电平板的散射问题 ,比较了各种方法的准确性 ,其结果可推广至弯曲结构的电磁散射的分析 .Some numerical techniques are investigated and their performance (computational speed and accuracy) is evaluated for computing the integral of physical optics. The numerical techniques studied are: Gordons method, the stationary phase method and the solution by FFT. The geometry considered is an infinitely thin perfectly conducting flat disc. The accuracy of each method can be calculated. The findings of this study can be easily extended to the analysis of the geometry with varying curvatures.

关 键 词：物理光学 雷达散射截面 驻相法 快速傅里叶变换 

分 类 号：O436[机械工程—光学工程]