Fast and Accurate Calculation of Electromagnetic Scattering/Radiation Fields

Fast and Accurate Calculation of Electromagnetic Scattering/Radiation Fields
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快速准确地计算电磁散射/辐射场

DOI:
10.1109/tap.2019.2927618
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发表时间:
2019-07
影响因子:
5.7
通讯作者:
Sheng Xin-Qing
Sheng Xin-Qing
中科院分区:
计算机科学2区
文献类型:
--
作者:
Liu Yan-Nan;Song Wei;Wu Di;Pan Xiao-Min;Sheng Xin-Qing

文献摘要

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通过矩量法表达源场关系,提出了一种快速计算散射/辐射场的通用方法。通过在辅助网格上定义一组SWG来扩展观测区域中的散射场。相关的展开系数从矩量法中的阻抗矩阵和等效电流的矩阵向量乘法(MVM)中获得。所提出的方法可以使一个精确的近场计算,而不需要特殊处理的奇异性。对复杂外形目标的数值实验验证了该方法的有效性。
A novel and general method for a fast calculation of scattering/radiation fields is proposed by expressing the source-field relationship through the method of moments (MoM). The scattering fields in the observation region are expanded by a set of SWGs defined on an auxiliary mesh. The associated expansion coefficients are obtained from matrix vector multiplication (MVM) of the impedance matrix in the MoM and the equivalent currents. The proposed method can enable an accurate near-field calculation without a special treatment of the singularity. Numerical experiments on targets with complex configurations are conducted to validate the performance of the proposed method.
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