Fast Analysis of Local Current Distribution for Electromagnetic Scattering Problems of Electrically Large Objects

被引：5

作者：

Kong, Meng ^{[1
,3
]}

Chen, Mingsheng ^{[1
,2
]}

Cao, Xinyuan ^{[1
,3
]}

Zhang, Liang ^{[1
,3
]}

Qi, Qi ^{[1
,3
]}

Wu, Xianliang ^{[1
]}

机构：

[1] Hefei Normal Univ, Anhui Prov Key Lab Simulat & Design Elect Informa, Hefei 230601, Peoples R China

[2] Huainan Normal Univ, Sch Elect Engn, Huainan 232038, Peoples R China

[3] Hefei Normal Univ, Sch Elect Informat & Elect Engn, Hefei 230601, Peoples R China

来源：

IEEE ACCESS | 2020年 / 8卷

基金：

中国国家自然科学基金;

关键词：

Electromagnetic scattering; compressive sensing; local current distribution; electrically large object; multiple incident angles; BOUNDARY EQUATION METHOD;

D O I：

10.1109/ACCESS.2020.3007958

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

To improve computational efficiency of obtaining local induced current distribution under multiple incidents angles when electromagnetic scattering problems of electrically large objects are considered, a novel method is proposed to form small-scale impedance matrix and reduce number of repeated calculation for different incident angles, which is implemented by following three steps. Firstly, an undetermined matrix equation including multiple incident angles is constructed by interrelating part field nodes and all source nodes on object surface. Secondly, the undetermined matrix equation is transformed into a form that conforms to the compressive sensing (CS) framework, which is solved by reconstructed algorithm to obtain approximate induced currents of all source nodes under a wide incident angle range. Finally, exact wide-angle currents of a given node are obtained by calculating total magnetic field, and neighborhood wide-angle currents of the given node can be expanded by choosing appropriate technology in different boundary conditions. Numerical results of electrically large objects shown the efficiency of the proposed method.

引用

页码：127640 / 127647

页数：8

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