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Article: A multilevel fast multipole based approach for efficient reconstruction of perfectly conducting scatterers
Title | A multilevel fast multipole based approach for efficient reconstruction of perfectly conducting scatterers |
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Authors | |
Issue Date | 2001 |
Publisher | Taylor & Francis Ltd. The Journal's web site is located at http://www.tandfonline.com/toc/tewa20/current |
Citation | Journal Of Electromagnetic Waves And Applications, 2001, v. 15 n. 1, p. 81-106 How to Cite? |
Abstract | A nonlinear reconstruction scheme based on the Distorted Born Iterative Method (DBIM) is presented to solve two-dimensional inverse scattering problems with metallic scatterers. Half-quadratic regularization alleviates the inherently ill-posed problem of nonlinear inverse scattering while simultaneously preserving edges. Reconstruction results are found by minimizing a cost function. A bistatic experimental set-up is studied with angular and frequency diversity. A Multilevel Fast Multipole Algorithm (MLFMA) combined with a conjugate gradient (CG) scheme is introduced to solve the forward as well as the inverse scattering problem involved in the DBIM. The computational complexity per CG iteration using the MLFMA is of order O(N log N) compared to O(N2) in a standard implementation without the MLFMA. Numerical reconstruction results obtained from synthetic scattering data are presented. |
Persistent Identifier | http://hdl.handle.net/10722/182641 |
ISSN | 2021 Impact Factor: 1.438 2020 SCImago Journal Rankings: 0.286 |
References |
DC Field | Value | Language |
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dc.contributor.author | Brandfass, M | en_US |
dc.contributor.author | Chew, WC | en_US |
dc.date.accessioned | 2013-05-02T05:16:14Z | - |
dc.date.available | 2013-05-02T05:16:14Z | - |
dc.date.issued | 2001 | en_US |
dc.identifier.citation | Journal Of Electromagnetic Waves And Applications, 2001, v. 15 n. 1, p. 81-106 | en_US |
dc.identifier.issn | 0920-5071 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/182641 | - |
dc.description.abstract | A nonlinear reconstruction scheme based on the Distorted Born Iterative Method (DBIM) is presented to solve two-dimensional inverse scattering problems with metallic scatterers. Half-quadratic regularization alleviates the inherently ill-posed problem of nonlinear inverse scattering while simultaneously preserving edges. Reconstruction results are found by minimizing a cost function. A bistatic experimental set-up is studied with angular and frequency diversity. A Multilevel Fast Multipole Algorithm (MLFMA) combined with a conjugate gradient (CG) scheme is introduced to solve the forward as well as the inverse scattering problem involved in the DBIM. The computational complexity per CG iteration using the MLFMA is of order O(N log N) compared to O(N2) in a standard implementation without the MLFMA. Numerical reconstruction results obtained from synthetic scattering data are presented. | en_US |
dc.language | eng | en_US |
dc.publisher | Taylor & Francis Ltd. The Journal's web site is located at http://www.tandfonline.com/toc/tewa20/current | en_US |
dc.relation.ispartof | Journal of Electromagnetic Waves and Applications | en_US |
dc.title | A multilevel fast multipole based approach for efficient reconstruction of perfectly conducting scatterers | en_US |
dc.type | Article | en_US |
dc.identifier.email | Chew, WC: wcchew@hku.hk | en_US |
dc.identifier.authority | Chew, WC=rp00656 | en_US |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.scopus | eid_2-s2.0-0035072329 | en_US |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-0035072329&selection=ref&src=s&origin=recordpage | en_US |
dc.identifier.volume | 15 | en_US |
dc.identifier.issue | 1 | en_US |
dc.identifier.spage | 81 | en_US |
dc.identifier.epage | 106 | en_US |
dc.publisher.place | Netherlands | en_US |
dc.identifier.scopusauthorid | Brandfass, M=6602399604 | en_US |
dc.identifier.scopusauthorid | Chew, WC=36014436300 | en_US |
dc.identifier.issnl | 0920-5071 | - |