Fast Direct Solution of Electromagnetic Scattering from Left-Handed Materials Coated Target over Wide Angle
When solving the electromagnetic scattering problems over wide angle, the traditional method of moments (MoM) needs to repeat the solving process of dense systems of linear equations using the iteration method at each incident angle, which proved to be quite inefficient. To circumvent this problem,...
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| Format: | Article |
| Language: | English |
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Wiley
2016-01-01
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| Series: | Journal of Electrical and Computer Engineering |
| Online Access: | http://dx.doi.org/10.1155/2016/2108586 |
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| _version_ | 1849415452943450112 |
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| author | Guo-hua Wang Ying-bao Geng |
| author_facet | Guo-hua Wang Ying-bao Geng |
| author_sort | Guo-hua Wang |
| collection | DOAJ |
| description | When solving the electromagnetic scattering problems over wide angle, the traditional method of moments (MoM) needs to repeat the solving process of dense systems of linear equations using the iteration method at each incident angle, which proved to be quite inefficient. To circumvent this problem, a fast numerical method based on block LDLT factorization accelerated by adaptive cross approximation (ACA) algorithm is presented to analyze the electromagnetic scattering of left-handed materials (LHM) coated target. The ACA algorithm is applied to impedance matrix filling and all steps of block LDLT factorization process, which can accelerate the computation process and reduce the memory consumption. The numerical results proved that the proposed method is efficient in calculating monostatic RCS of LHM coated target with many required sampling angles. Compared with the traditional MoM, computation time and memory consumption are reduced effectively. |
| format | Article |
| id | doaj-art-6923b19676d84e1599cd74c3f83ac38b |
| institution | Kabale University |
| issn | 2090-0147 2090-0155 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Electrical and Computer Engineering |
| spelling | doaj-art-6923b19676d84e1599cd74c3f83ac38b2025-08-20T03:33:32ZengWileyJournal of Electrical and Computer Engineering2090-01472090-01552016-01-01201610.1155/2016/21085862108586Fast Direct Solution of Electromagnetic Scattering from Left-Handed Materials Coated Target over Wide AngleGuo-hua Wang0Ying-bao Geng1New Star Institute of Applied Technology, Hefei 230039, ChinaSchool of Medical Information Engineering, Anhui University of Chinese Medicine, Hefei 230038, ChinaWhen solving the electromagnetic scattering problems over wide angle, the traditional method of moments (MoM) needs to repeat the solving process of dense systems of linear equations using the iteration method at each incident angle, which proved to be quite inefficient. To circumvent this problem, a fast numerical method based on block LDLT factorization accelerated by adaptive cross approximation (ACA) algorithm is presented to analyze the electromagnetic scattering of left-handed materials (LHM) coated target. The ACA algorithm is applied to impedance matrix filling and all steps of block LDLT factorization process, which can accelerate the computation process and reduce the memory consumption. The numerical results proved that the proposed method is efficient in calculating monostatic RCS of LHM coated target with many required sampling angles. Compared with the traditional MoM, computation time and memory consumption are reduced effectively.http://dx.doi.org/10.1155/2016/2108586 |
| spellingShingle | Guo-hua Wang Ying-bao Geng Fast Direct Solution of Electromagnetic Scattering from Left-Handed Materials Coated Target over Wide Angle Journal of Electrical and Computer Engineering |
| title | Fast Direct Solution of Electromagnetic Scattering from Left-Handed Materials Coated Target over Wide Angle |
| title_full | Fast Direct Solution of Electromagnetic Scattering from Left-Handed Materials Coated Target over Wide Angle |
| title_fullStr | Fast Direct Solution of Electromagnetic Scattering from Left-Handed Materials Coated Target over Wide Angle |
| title_full_unstemmed | Fast Direct Solution of Electromagnetic Scattering from Left-Handed Materials Coated Target over Wide Angle |
| title_short | Fast Direct Solution of Electromagnetic Scattering from Left-Handed Materials Coated Target over Wide Angle |
| title_sort | fast direct solution of electromagnetic scattering from left handed materials coated target over wide angle |
| url | http://dx.doi.org/10.1155/2016/2108586 |
| work_keys_str_mv | AT guohuawang fastdirectsolutionofelectromagneticscatteringfromlefthandedmaterialscoatedtargetoverwideangle AT yingbaogeng fastdirectsolutionofelectromagneticscatteringfromlefthandedmaterialscoatedtargetoverwideangle |