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dc.contributor.authorHouégnigan, Ludwig
dc.contributor.authorZaugg, Serge Alain
dc.contributor.authorVan der Schaar, Mike Connor Roger Malcolm
dc.contributor.authorAndré, Michel
dc.contributor.otherCentre Tecnològic de Vilanova i la Geltrú
dc.date.accessioned2010-11-09T16:57:55Z
dc.date.available2010-11-09T16:57:55Z
dc.date.created2010-11
dc.date.issued2010-11
dc.identifier.citationHouégnigan, L. [et al.]. Space–time and hybrid algorithms for the passive acoustic localisation of sperm whales and vessels. "Applied acoustics", Novembre 2010, vol. 71, núm. 11, p. 1000-1010.
dc.identifier.issn0003-682X
dc.identifier.urihttp://hdl.handle.net/2117/10225
dc.description.abstractIn the frame of the European Sea-floor Observatory Network (ESONET) and in preparation of the Demonstration Mission Listening to the Deep-Ocean Environment (LIDO) algorithms for the automated real-time detection, classification and localisation of cetaceans have been developed. Such Passive Acoustic Monitoring techniques have the potential to play a key role in cetaceans’ conservation for they allow a non-invasive study of their behaviour, a better knowledge of their population dynamics, and a better understanding of their dynamic relationship with their environment. This paper investigates the development of efficient and accurate techniques to be used as the basis of a localisation module for an automated real-time Passive Acoustic Monitoring system. An opportunity to assess the capabilities of the developed localisation modules was given by recordings collected with a bottom-mounted (around 2080 m depth) tetrahedral compact hydrophone array located offshore the port of Catania (Sicily) during the NEMO-ONDE campaign in the years 2005–2006 by INFN and CIBRA [2]. A well-known class of methods for acoustic source localisation is based on time differences of arrival (TDOA). Its capabilities have shown to be useful even in adverse situations (i.e., few sensors, high noise levels and/or poor calibration). A second class of methods, the space–time methods, originated in underwater applications such as sonar but reached its most significant achievements over the last 20 years in digital communications with recent progress in the treatment of broadband signals. These developments are here revisited under the scope of the localisation and tracking of cetacean vocalisations. Various broadband space–time methods were implemented and allowed to map the sound radiated during the detected clicks and to consequently localise both sperm whales and vessels. Hybrid methods were also developed which improved the robustness of space–time methods to noise and reverberation and reduced processing time. In most cases, the small variance obtained for these estimates lessened the necessity of additional statistical clustering. Even though not independently confirmed by sightings, the tracks derived in the proposed frame can be considered to be consistent with the known movements of sperm whales and vessels.
dc.format.extent11 p.
dc.language.isoeng
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Física::Acústica
dc.subject.lcshUnderwater acoustics
dc.subject.otherBioacoustics
dc.subject.otherOcean observatories
dc.subject.otherAcoustic source localisation
dc.subject.otherBeamforming
dc.subject.otherCetaceans
dc.subject.otherArray processing
dc.titleSpace–time and hybrid algorithms for the passive acoustic localisation of sperm whales and vessels
dc.typeArticle
dc.subject.lemacAcústica submarina
dc.contributor.groupUniversitat Politècnica de Catalunya. LAB - Laboratori d'Aplicacions Bioacústiques
dc.identifier.doi10.1016/j.apacoust.2010.05.017
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://linkinghub.elsevier.com/retrieve/pii/S0003682X10001246
dc.rights.accessRestricted access - publisher's policy
local.identifier.drac2812010
dc.description.versionPostprint (published version)
local.citation.authorHouégnigan, L.; Zaugg, S.A.; van der Schaar, M.; Andre, M.
local.citation.publicationNameApplied acoustics
local.citation.volume71
local.citation.number11
local.citation.startingPage1000
local.citation.endingPage1010


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