一种求解基于CRWG阻抗矩阵奇异积分的解析方法  

An Analytic Approach to Process Impedance Metric's Singular Integral of CRWG

作　　者：郑加良[1] 尹成友[1] 于涛[1] 廖飞龙 

机构地区：[1]合肥电子工程学院,合肥230037 [2]合肥陆军军官学院,合肥230037

出　　处：《微波学报》2013年第1期78-83,87,共7页Journal of Microwaves

摘　　要：针对利用CRWG-MOM分析曲面物体的电磁散射时,阻抗矩阵奇异性难以处理的问题,在传统Duffy转换方法的基础上,提出了一种新的对CRWG的奇异项和近奇异项进行解析处理的方法。采用该方法分析了理想导体球对平面波散射问题,数值结果证明该方法与Duffy方法相比,提高了计算效率和计算精度。然后进一步求解了导体球上的电流密度,通过比较计算结果,证明了对近奇异项进行解析处理方法的准确性。Considering the impedance metric＇s singular integral difficult to process when the CRWG-MOM method is used to analyze the electromagnetic scattering problem of curved objects, based on the traditional Duffy transform approach, a new approach to process CRWG singular and nearly singular terms is proposed in the paper. The electromagnetic scattering problem of a PEC sphere incident by a plane wave is analyzed using the new method. The numerical results validate the supe- riority in the computing efficiency and accuracy comparing with the Dully approach. Then the current distribution on the sphere is computed, and the calculated result validates the accuracy of the nearly singular term processing.

关 键 词：曲面三角形基函数 平面三角形基函数 奇异项 近奇异项 

分 类 号：TN011[电子电信—物理电子学]