一种磁场积分方程奇异性处理的有效方法  

An effective method to solve the singularity of magnetic field integral equation

作　　者：吴君辉[1] 曹祥玉[1] 高军[1] 封同安[1] 

机构地区：[1]空军工程大学信息与导航学院,陕西西安710077

出　　处：《安徽大学学报（自然科学版）》2013年第4期55-60,共6页Journal of Anhui University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(60671001;61271100);陕西省自然科学基金资助项目(2010JZ010;2012JM8003)

摘　　要：为解决使用磁场积分方程计算目标的电磁特性精度低的问题,通过对磁场积分方程奇异性的分析,提取并处理方程内层积分中的近奇异性,采用简单的积分域变换方法处理矩量法计算中外层积分的奇异性,从而达到了使用基于矩量法的MFIE来精确计算目标雷达散射截面(RCS)的目的.该方法得到的RCS与电场积分方程所得结果吻合良好,误差在0.5 dB以下,计算结果表明算法具有效性.In order to solve the problem of the low precision of electromagnetic scattering characteristic, which was calculated by magnetic field integral equation, the singularity of the magnetic field integral equation was analyzed, the inner layer integral singularity of the equation was extracted and processed, and the outer layer integral singularity in calculation was solved with the simple method of integral domain transform in this paper. Then the Radar Cross Section could be calculated accurately with MFIE based on MOM. The resulting RCS was in good agreement with that was obtained by the electric field integral equation, and the error was lower than 0.5 dB. The effectiveness of the method was demonstrated by numerical results.

关 键 词：磁场积分方程 奇异性 矩量法 

分 类 号：TN011[电子电信—物理电子学]