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Título:	Underwater acoustic slant range measurements related to weather and sea state
Autor/a:	Masmitjà Rusiñol, Ivan; Carandell Widmer, Matias; Bouvet, Pierre-Jean; Aguzzi, Jacopo; Gomáriz Castro, Spartacus; Río Fernandez, Joaquín del
Otros autores:	Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica; Universitat Politècnica de Catalunya. SARTI-MAR - Sistemes d'Adquisició Remota de dades i Tractament de la Informació en el Medi Marí
Abstract:	Underwater range measurements are key factor in underwater acoustic positioning, used in Long Base-Line (LBL) or Ultra Short Base-Line (USBL) computing techniques. These measurements are commonly carried out through acoustic communications between modems and their accuracy can be affected by different factors, such as sea state, weather conditions, and obstacles in the line of sight propagation. This is especially important in shallow waters areas, where others phenomena such as multi-path have to be considered. Therefore, range accuracy and the associated position estimation errors are an important area of research. Here, we addressed the relation between range measurements variability and sea state (i.e. currents or waves height) as proxy of real-world conditions, affecting acoustic positioning performances. For that purpose, a long-term deployment have been carried out in the underwater cabled observatory OBSEA, which provide different measurements of the sea and weather state.
Abstract:	Peer Reviewed
Materia(s):	-Àrees temàtiques de la UPC::Física::Acústica::Sons subaquàtics -Àrees temàtiques de la UPC::Enginyeria electrònica::Instrumentació i mesura -Underwater acoustics -Acústica submarina
Derechos:	Attribution 3.0 Spain http://creativecommons.org/licenses/by/3.0/es/
Tipo de documento:	Artículo - Versión publicada Objeto de conferencia
Editor:	Institute of Physics (IOP)
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