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Article: Adaptive beamforming using frequency invariant uniform concentric circular arrays

TitleAdaptive beamforming using frequency invariant uniform concentric circular arrays
Authors
KeywordsArray processing
Beamspace
Broadband adaptive beamforming
Broadband direction-of-arrival (DOA) estimation
Frequency invariant
Robust beamforming
Target tracking
Uniform concentric circular arrays (UCCAs)
Issue Date2007
PublisherIEEE.
Citation
Ieee Transactions On Circuits And Systems I: Regular Papers, 2007, v. 54 n. 9, p. 1938-1949 How to Cite?
AbstractThis paper proposes new adaptive beamforming algorithms for a class of uniform concentric circular arrays (UCCAs) having near-frequency invariant characteristics. The basic principle of the UCCA frequency invariant beamformer (FIB) is to transform the received signals to the phase mode representation and remove the frequency dependence of individual phase modes through the use of a digital beamforming or compensation network. As a result, the far field pattern of the array is electronic steerable and is approximately invariant over a wider range of frequencies than the uniform circular arrays (UCAs). The beampattern is governed by a small set of variable beamformer weights. Based on the minimum variance distortionless response (MVDR) and generalized sidelobe canceller (GSC) methods, new recursive adaptive beamforming algorithms for UCCA-FIB are proposed. In addition, robust versions of these adaptive beamforming algorithms for mitigating direction-of-arrival (DOA) and sensor position errors are developed. Simulation results show that the proposed adaptive UCCA-FIBs converge much faster and reach a considerable lower steady-state error than conventional broadband UCCA beamformers without using the compensation network. Since fewer variable multipliers are required in the proposed algorithms, it also leads to lower arithmetic complexity and faster tracking performance than conventional methods. © 2007 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/57459
ISSN
2006 Impact Factor: 1.139
2006 SCImago Journal Rankings: 1.111
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorChen, HHen_HK
dc.contributor.authorChan, SCen_HK
dc.contributor.authorHo, KLen_HK
dc.date.accessioned2010-04-12T01:37:17Z-
dc.date.available2010-04-12T01:37:17Z-
dc.date.issued2007en_HK
dc.identifier.citationIeee Transactions On Circuits And Systems I: Regular Papers, 2007, v. 54 n. 9, p. 1938-1949en_HK
dc.identifier.issn1057-7122en_HK
dc.identifier.urihttp://hdl.handle.net/10722/57459-
dc.description.abstractThis paper proposes new adaptive beamforming algorithms for a class of uniform concentric circular arrays (UCCAs) having near-frequency invariant characteristics. The basic principle of the UCCA frequency invariant beamformer (FIB) is to transform the received signals to the phase mode representation and remove the frequency dependence of individual phase modes through the use of a digital beamforming or compensation network. As a result, the far field pattern of the array is electronic steerable and is approximately invariant over a wider range of frequencies than the uniform circular arrays (UCAs). The beampattern is governed by a small set of variable beamformer weights. Based on the minimum variance distortionless response (MVDR) and generalized sidelobe canceller (GSC) methods, new recursive adaptive beamforming algorithms for UCCA-FIB are proposed. In addition, robust versions of these adaptive beamforming algorithms for mitigating direction-of-arrival (DOA) and sensor position errors are developed. Simulation results show that the proposed adaptive UCCA-FIBs converge much faster and reach a considerable lower steady-state error than conventional broadband UCCA beamformers without using the compensation network. Since fewer variable multipliers are required in the proposed algorithms, it also leads to lower arithmetic complexity and faster tracking performance than conventional methods. © 2007 IEEE.en_HK
dc.languageengen_HK
dc.publisherIEEE.en_HK
dc.relation.ispartofIEEE Transactions on Circuits and Systems I: Regular Papersen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rights©2007 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.en_HK
dc.subjectArray processingen_HK
dc.subjectBeamspaceen_HK
dc.subjectBroadband adaptive beamformingen_HK
dc.subjectBroadband direction-of-arrival (DOA) estimationen_HK
dc.subjectFrequency invarianten_HK
dc.subjectRobust beamformingen_HK
dc.subjectTarget trackingen_HK
dc.subjectUniform concentric circular arrays (UCCAs)en_HK
dc.titleAdaptive beamforming using frequency invariant uniform concentric circular arraysen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1057-7122&volume=54&issue=9&spage=1938&epage=1949&date=2007&atitle=Adaptive+beamforming+using+frequency+invariant+uniform+concentric+circular+arraysen_HK
dc.identifier.emailChan, SC:scchan@eee.hku.hken_HK
dc.identifier.emailHo, KL:klho@eee.hku.hken_HK
dc.identifier.authorityChan, SC=rp00094en_HK
dc.identifier.authorityHo, KL=rp00117en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1109/TCSI.2007.904648en_HK
dc.identifier.scopuseid_2-s2.0-34648846659en_HK
dc.identifier.hkuros140420-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-34648846659&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume54en_HK
dc.identifier.issue9en_HK
dc.identifier.spage1938en_HK
dc.identifier.epage1949en_HK
dc.identifier.isiWOS:000249730800007-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridChen, HH=35188521100en_HK
dc.identifier.scopusauthoridChan, SC=13310287100en_HK
dc.identifier.scopusauthoridHo, KL=7403581592en_HK

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