Generalized Broadband Beamforming Using a Modal Subspace Decomposition

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dc.contributor.authorWilliams, Michael I Y
dc.contributor.authorAbhayapala, Thushara
dc.contributor.authorKennedy, Rodney
dc.date.accessioned2015-09-03T06:29:39Z
dc.date.available2015-09-03T06:29:39Z
dc.date.issued2007
dc.description.abstractWe propose a new broadband beamformer design technique which produces an optimal receiver beam pattern for any set of field measurements in space and time. The modal subspace decomposition (MSD) technique is based on projecting a desired pattern into the subspace of patterns achievable by a particular set of space-time sampling positions. This projection is the optimal achievable pattern in the sense that it minimizes the mean-squared error (MSE) between the desired and actual patterns. The main advantage of the technique is versatility as it can be applied to both sparse and dense arrays, nonuniform and asynchronous time sampling, and dynamic arrays where sensors can move throughout space. It can also be applied to any beam pattern type, including frequency-invariant and spot pattern designs. A simple extension to the technique is presented for oversampled arrays, which allows high-resolution beamforming whilst carefully controlling input energy and error sensitivity.en_AU
dc.identifier.issn1687-6180en_AU
dc.identifier.urihttp://hdl.handle.net/1885/15165
dc.publisherSpringerOpenen_AU
dc.rightsCopyright © 2007 Michael I. Y. Williams et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.en_AU
dc.sourceEURASIP Journal on Advances in Signal Processingen_AU
dc.subjectbroadband beamformer design techniqueen_AU
dc.subjectfield measurementsen_AU
dc.subjectmodal subspace decomposition (MSD) techniqueen_AU
dc.titleGeneralized Broadband Beamforming Using a Modal Subspace Decompositionen_AU
dc.typeJournal articleen_AU
local.bibliographicCitation.issue1en_AU
local.bibliographicCitation.startpage068291en_AU
local.contributor.affiliationWilliams, Michael I Y, Department of Information Engineering, Research School of Information Sciences and Engineering, The Australian National Universiten_AU
local.contributor.affiliationAbhayapala, Thushara D, Department of Information Engineering, Research School of Information Sciences and Engineering, The Australian National Universiten_AU
local.contributor.affiliationKennedy, Rodney A, Department of Information Engineering, Research School of Information Sciences and Engineering, The Australian National Universiten_AU
local.identifier.citationvolume2007en_AU
local.identifier.doi10.1155/2007/68291en_AU
local.identifier.uidSubmittedByu5437951en_AU
local.type.statusPublished Versionen_AU

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