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Article: An efficient marching-on-in-degree solution of transient multiscale EM scattering problems

TitleAn efficient marching-on-in-degree solution of transient multiscale EM scattering problems
Authors
KeywordsElectromagnetic (EM) scattering
Equivalence principle algorithm (EPA)
Time-domain domain decomposition method
Issue Date2016
PublisherIEEE. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=8
Citation
IEEE Transactions on Antennas and Propagation, 2016, v. 64 n. 7, p. 3039-3046, article no. 7460917 How to Cite?
AbstractA marching-on-in-degree (MOD)-based time-domain domain decomposition method is proposed to efficiently analyze the transient electromagnetic scattering from electrically large multiscale targets. The algorithm starts with an octree that divides the whole scattering target into several subdomains. Then using the equivalence principle algorithm, each subdomain is enclosed by an equivalence sphere (ES), where both the RWG and BoR spatial basis functions are employed to expand the unknown currents. The interactions of the near-field subdomains are directly calculated by the method of moments, while the far-field interactions can be converted into the interactions of corresponding ESs. This scheme implicitly satisfies the current continuity condition, and the convergence can be accelerated as well. By harnessing the rotational symmetry of the ESs, the computational resources are reduced significantly compared with the traditional MOD method. Several numerical examples are presented to demonstrate the accuracy and efficiency of the proposed algorithm. © 2016 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/234579
ISSN
2015 Impact Factor: 2.053
2015 SCImago Journal Rankings: 2.130

 

DC FieldValueLanguage
dc.contributor.authorHe, Z-
dc.contributor.authorChen, RS-
dc.contributor.authorSha, W-
dc.date.accessioned2016-10-14T13:47:50Z-
dc.date.available2016-10-14T13:47:50Z-
dc.date.issued2016-
dc.identifier.citationIEEE Transactions on Antennas and Propagation, 2016, v. 64 n. 7, p. 3039-3046, article no. 7460917-
dc.identifier.issn0018-926X-
dc.identifier.urihttp://hdl.handle.net/10722/234579-
dc.description.abstractA marching-on-in-degree (MOD)-based time-domain domain decomposition method is proposed to efficiently analyze the transient electromagnetic scattering from electrically large multiscale targets. The algorithm starts with an octree that divides the whole scattering target into several subdomains. Then using the equivalence principle algorithm, each subdomain is enclosed by an equivalence sphere (ES), where both the RWG and BoR spatial basis functions are employed to expand the unknown currents. The interactions of the near-field subdomains are directly calculated by the method of moments, while the far-field interactions can be converted into the interactions of corresponding ESs. This scheme implicitly satisfies the current continuity condition, and the convergence can be accelerated as well. By harnessing the rotational symmetry of the ESs, the computational resources are reduced significantly compared with the traditional MOD method. Several numerical examples are presented to demonstrate the accuracy and efficiency of the proposed algorithm. © 2016 IEEE.-
dc.languageeng-
dc.publisherIEEE. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=8-
dc.relation.ispartofIEEE Transactions on Antennas and Propagation-
dc.rightsIEEE Transactions on Antennas and Propagation. Copyright © IEEE.-
dc.rights©2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectElectromagnetic (EM) scattering-
dc.subjectEquivalence principle algorithm (EPA)-
dc.subjectTime-domain domain decomposition method-
dc.titleAn efficient marching-on-in-degree solution of transient multiscale EM scattering problems-
dc.typeArticle-
dc.identifier.emailSha, W: shawei@hku.hk-
dc.identifier.authoritySha, W=rp01605-
dc.description.naturepostprint-
dc.identifier.doi10.1109/TAP.2016.2559521-
dc.identifier.scopuseid_2-s2.0-84978221193-
dc.identifier.hkuros269506-
dc.identifier.volume64-
dc.identifier.issue7-
dc.identifier.spage3039-
dc.identifier.epage3046-
dc.publisher.placeUnited States-
dc.customcontrol.immutablesml 161110-

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