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dc.contributor.authorChambers, Shane
dc.contributor.authorJames, Ralph
dc.contributor.authorDuncan, Alexander
dc.contributor.editorTerrance McMinn
dc.date.accessioned2017-01-30T11:01:01Z
dc.date.available2017-01-30T11:01:01Z
dc.date.created2013-03-27T20:00:55Z
dc.date.issued2012
dc.identifier.citationChambers, Shane and James, Ralph and Duncan, Alec. 2012. Comparison of the physical acoustic channel response of a line array of thin rectangular bars to an equivalent model of thin vibrating rectangular pistons, in McMinn, Terrance (ed), Acoustics 2012 Fremantle: Acoustics, Development and the Environment, The 2012 Conference of the Australian Acoustical Society, Nov 21-23 2012. Fremantle, Western Australia: Australian Acoustical Society
dc.identifier.urihttp://hdl.handle.net/20.500.11937/7599
dc.description.abstract

The resolution of an array is determined by the number and spatial distance of apertures (channels) within the array and the geometry of each aperture. The accurate design of acoustic sensing arrays relies on an a prioiri estimate of the expected far field radiation pattern of reciprocally behaved elements chosen for each aperture which is difficult to calculate under damped and loaded conditions. The estimated response of one channel of a vertical line array, when modeled as a series of rectangular vibrating pistons on a rigid baffle, is compared to the measured response of one channel of a line array comprised of a series of thin rectangular bars under load and operating off resonance. Although simple modeling can predict the 3dB main lobe width of the channel with some accuracy, loading and damping effects will alter the individual element response and hence the sensitivity of the array and side lobe magnitudes when off axis steering. This is important to note when estimating array gain and noise contributions from sidelobes under steered conditions.

dc.publisherAcoustical Society of Australia
dc.relation.urihttp://www.acoustics.asn.au/conference_proceedings/AAS2012/papers/p124.pdf
dc.subjectacoustic
dc.subjectvibrating
dc.subjectsensing
dc.subjectarray
dc.titleComparison of the physical acoustic channel response of a line array of thin rectangular bars to an equivalent model of thin vibrating rectangular pistons.
dc.typeConference Paper
dcterms.source.titleProceedings of the Acoustical Society of Australia
dcterms.source.seriesProceedings of the Acoustical Society of Australia
dcterms.source.isbn9780646590394
dcterms.source.conferenceAcoustics 2012 Fremantle: Acoustics, Development and the Environment, the 2012 Conference of the Australian Acoustical Society
dcterms.source.conference-start-dateNov 21 2012
dcterms.source.conferencelocationFremantle, Western Australia
dcterms.source.placeAustralia
curtin.department
curtin.accessStatusOpen access


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