一种改进稳定性的时域电场积分方程法  

An Improved Stable Procedure for Time Domain Electric Field Integral Equation Method

作　　者：唐煜[1] 顾长青[1] 

机构地区：[1]南京航空航天大学信息科学与技术学院,南京210016

出　　处：《微波学报》2008年第4期31-35,共5页Journal of Microwaves

摘　　要：研究了时域电场积分方程隐式MOT算法中时间基函数对其稳定性的影响,由理论分析和数值结果得出了选用高频分量较少的时间基函数不利于隐式MOT算法稳定性的结论。在此基础上,将一种多项式时间基函数与新的时间平均方法相结合,提出了一种改进稳定性的隐式MOT算法,计算实例表明比先五步后三步平均法更加精确,比以前的隐式MOT算法更加稳定。The effect of temporal basis functions for the stability of implicit MOT solution for time-domain electric integral equation （TDIE） is examined. With theoretical analysis and numerical examples, it comes to the conclusion that temporal basis functions with poor high-frequency content will disimprove the stability of implicit MOT solution. Employing a kind of polynomial temporal function and combining with a new time averaging scheme, a new implicit solution is proposed. Examples illustrate that this solution is much more accurate than the ＂first five steps then three steps＂ averaging scheme, and more stable than previous implicit MOT solution.

关 键 词：时域电场积分方程 隐式时间步进算法 时间基函数 平均方法 

分 类 号：O441.4[理学—电磁学]