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Underwater acoustic spiral source: pool tests and calibration

2023-11Working paper Restricted access
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dc.contributor.authorViegas, Sergio
dc.contributor.authorZabel, Friedrich
dc.contributor.authorSilva, António
dc.date.accessioned2023-12-18T10:29:16Z
dc.date.available2023-12-18T10:29:16Z
dc.date.issued2023-11
dc.description.abstractUnderwater acoustic spiral sources are able to generate spiral acoustic fields where the phase depends on the bearing angle. It allows to estimate the bearing angle relatively to a receiver by subtracting the phases of a spiral and a circular wavefront, and can be used to estimate bearing angles with a single hydrophone/projector pair, e.g., for unmanned underwater vehicles localization. The developed spiral source comprises four monopoles/quadrants and it will be shown that the spiral source behavior is linear, which means that the generated acoustic signals are the sum of the four acoustic signals from each separate monopole, for any amplitude value. This work presents two calibration methods for spiral acoustic sources and the linearity evaluation for the used spiral source. Unlike the calibrations performed on signal reception, the two proposed calibration methods adjust the phase of the emitted signals to form the acoustic spiral field. The first calibration method rectifies the phase of one quadrant based on the contribution of the four quadrants. This method was tested and presented a performance lower than the performance of the calibration on the receiving side. After evaluating the linearity, a new calibration approach is suggested. This new approach uses the signals from separate quadrants instead of the contribution of the four quadrants. This method needs to be tested experimentally to check its validity.pt_PT
dc.description.sponsorshipEuropean Union (EU) COMPETE2020, Portuguese Foundation for Science and Technology (FCT) under the MIT Portugal Program POCI-01-0247-FEDER-045941pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1109/OCEANSLimerick52467.2023.10244663pt_PT
dc.identifier.isbn79-8-3503-3226-1
dc.identifier.urihttp://hdl.handle.net/10400.1/20244
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherIEEEpt_PT
dc.subjectSpiral sourcept_PT
dc.subjectUnderwater acousticspt_PT
dc.subjectTransducer calibrationpt_PT
dc.subjectUnderwater localizationpt_PT
dc.titleUnderwater acoustic spiral source: pool tests and calibrationpt_PT
dc.typeworking paper
dspace.entity.typePublication
oaire.citation.endPage6pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleOCEANS 2023pt_PT
person.familyNameZabel
person.familyNameSilva
person.givenNameFriedrich
person.givenNameAntónio
person.identifier.ciencia-idEB17-11D8-E7BD
person.identifier.orcid0000-0002-3477-2813
person.identifier.orcid0000-0002-1724-7777
person.identifier.ridN-6554-2013
person.identifier.scopus-author-id55846463600
rcaap.rightsrestrictedAccesspt_PT
rcaap.typeworkingPaperpt_PT
relation.isAuthorOfPublication534d6500-1559-43d0-a9ae-ff0ac6ee888f
relation.isAuthorOfPublication564df7bf-2e6e-46bf-a80b-d37570d3b78d
relation.isAuthorOfPublication.latestForDiscovery564df7bf-2e6e-46bf-a80b-d37570d3b78d

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