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Article: A multilevel fast multipole based approach for efficient reconstruction of perfectly conducting scatterers

TitleA multilevel fast multipole based approach for efficient reconstruction of perfectly conducting scatterers
Authors
Issue Date2001
PublisherTaylor & 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?
AbstractA 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 Identifierhttp://hdl.handle.net/10722/182641
ISSN
2015 Impact Factor: 0.772
2015 SCImago Journal Rankings: 0.394
References

 

DC FieldValueLanguage
dc.contributor.authorBrandfass, Men_US
dc.contributor.authorChew, WCen_US
dc.date.accessioned2013-05-02T05:16:14Z-
dc.date.available2013-05-02T05:16:14Z-
dc.date.issued2001en_US
dc.identifier.citationJournal Of Electromagnetic Waves And Applications, 2001, v. 15 n. 1, p. 81-106en_US
dc.identifier.issn0920-5071en_US
dc.identifier.urihttp://hdl.handle.net/10722/182641-
dc.description.abstractA 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.languageengen_US
dc.publisherTaylor & Francis Ltd. The Journal's web site is located at http://www.tandfonline.com/toc/tewa20/currenten_US
dc.relation.ispartofJournal of Electromagnetic Waves and Applicationsen_US
dc.titleA multilevel fast multipole based approach for efficient reconstruction of perfectly conducting scatterersen_US
dc.typeArticleen_US
dc.identifier.emailChew, WC: wcchew@hku.hken_US
dc.identifier.authorityChew, WC=rp00656en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-0035072329en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0035072329&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume15en_US
dc.identifier.issue1en_US
dc.identifier.spage81en_US
dc.identifier.epage106en_US
dc.publisher.placeNetherlandsen_US
dc.identifier.scopusauthoridBrandfass, M=6602399604en_US
dc.identifier.scopusauthoridChew, WC=36014436300en_US

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