Uncertainty Analyses in the Finite-Difference Time-Domain Method
Uncertainty Analyses in the Finite-Difference Time-Domain Method
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DOI：
10.1109/temc.2009.2034645
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发表时间：
2010-02
影响因子：
2.1
通讯作者：
Robert S. Edwards;A. Marvin;Stuart J. Porter
中科院分区：
文献类型：
--
作者：
Robert S. Edwards;A. Marvin;Stuart J. Porter
在确定结果的可接受性时，提供计算电磁（CEM）模拟所得结果的不确定性估计值至关重要。蒙特卡罗方法（MCM）以前已被用来量化CEM模拟中的不确定性。其他计算效率高的方法最近也被研究，如多项式混沌方法（PCM）和矩量法（MoM）。本文介绍了一种新的实现PCM和矩量法到时域有限差分法。PCM和MoM被认为是计算效率比MCM，但可以提供较差的估计谐振电磁兼容性数据的不确定性。
Providing estimates of the uncertainty in results obtained by Computational Electromagnetic (CEM) simulations is essential when determining the acceptability of the results. The Monte Carlo method (MCM) has been previously used to quantify the uncertainty in CEM simulations. Other computationally efficient methods have been investigated more recently, such as the polynomial chaos method (PCM) and the method of moments (MoM). This paper introduces a novel implementation of the PCM and the MoM into the finite-difference time -domain method. The PCM and the MoM are found to be computationally more efficient than the MCM, but can provide poorer estimates of the uncertainty in resonant electromagnetic compatibility data.