计算介质体瞬态散射矩阵元素方法的改进

Improvement of Computing Matrix Elements in Analyzing Transient Scattering of Dielectric Bodies

针对求解均匀介质体的瞬态电磁散射问题,采用基于MOT的方法求解Müller方程来分析,对分析中矩阵元素的积分求解,提出了一种奇异分离方法。该方法考虑了时间项延迟的影响,减小了计算中的近似,提高了计算精度。验证表明,和原算法相比,新算法在近奇异处理上的误差很小。

To analyze the transient scattering of homogeneous dielectric bodies,the Müller equations with MOT method were chosen.A singularity-extraction technique was presented to calculate the integrals of matrix elements,which considers the time delay effect.It could reduce the approximate value and improve the accuracy.The calculation specifies that the new method has lower-level errors in near singularity than the common method.