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A pulse-length correction to improve energy-based seabed classification in coastal areas

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dc.contributor.authorRodríguez Pérez, Daniel
dc.contributor.authorSánchez Carnero, Noela
dc.contributor.authorFreire, Juan
dc.date.accessioned2025-12-09T14:07:42Z
dc.date.available2025-12-09T14:07:42Z
dc.date.issued2014-01-25
dc.descriptionThis is an Accepted Manuscript of an article published by Elsevier in "Continental Shelf Research, 77:1-13", available at: https://doi.org/10.1016/j.csr.2014.01.012
dc.descriptionEste es el manuscrito aceptado del artículo publicado por Elsevier en "Continental Shelf Research, 77:1-13", disponible en línea: https://doi.org/10.1016/j.csr.2014.01.012
dc.description.abstractSea bottom classification using echosounders is an active field of research, where many different methods (to define echo features or perform their statistical classification) have been proposed and tested. Here we propose a new echo correction method suitable for use in coastal waters, where large relative depth variations occur. The idea is based on scaling the pulse length with depth as suggested by Pouliquen (Preston et al., 2004. Proceedings of the Seventh European Conference on Underwater Acoustics, ECUA 2004), but instead of in real time, in postprocessing. We investigate, in particular, the benefits of this correction for a classification based on the energy integrals of first and second return echoes, relying on the correction to find an optimal definition for those energy integrals. The method is tested in a coastal area survey with substrates varying over small scales (less than 200 m) and with large relative changes in water depth (5–40 m and slopes of up to 0.2). We show that the unsupervised classification bears a good agreement with divers groundtruthing (85% agreement with a Cohen׳s kappa, κ=0.74 for a 4-class map) and with previous knowledge of the study area.en
dc.description.provenanceMade available in DSpace on 2025-12-09T14:07:42Z (GMT). No. of bitstreams: 1 A Pulse Length Correction(postprint) Daniel Rodríguez Pérez.pdf: 1433091 bytes, checksum: af923bd2c04fa8d5325906002e89d05f (MD5) Previous issue date: 2014-01-25en
dc.description.versionversión final
dc.identifier.citationRodríguez Pérez, Daniel, Sanchez Carnero, Noela, Freire, Juan, (2014). “A pulse-length echo correction to improve energy based seabed classification in coastal areas”. Continental Shelf Research, 77:1-13; DOI:10.1016/j.csr.2014.01.012
dc.identifier.doihttps://doi.org/10.1016/j.csr.2014.01.012
dc.identifier.issn0278-4343
dc.identifier.urihttps://hdl.handle.net/20.500.14468/31054
dc.journal.titleContinental Shelf Research
dc.journal.volume77
dc.language.isoen
dc.page.final13
dc.page.initial1
dc.publisherElsevier
dc.relation.centerFacultad de Ciencias
dc.relation.departmentFísica Matemática y de Fluídos
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
dc.subject2510.11 Acústica submarina
dc.subject.keywordsBenthic habitat classificationen
dc.subject.keywordsCluster classificationen
dc.subject.keywordsEcho correctionen
dc.subject.keywordsPCA analysisen
dc.subject.keywordsPing-length correctionen
dc.subject.keywordsSingle-beamen
dc.titleA pulse-length correction to improve energy-based seabed classification in coastal areasen
dc.typeartículoes
dc.typejournal articleen
dspace.entity.typePublication
relation.isAuthorOfPublication6567ec87-332f-45c9-8f32-1fb7e2a6a02d
relation.isAuthorOfPublication.latestForDiscovery6567ec87-332f-45c9-8f32-1fb7e2a6a02d
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