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	Provedor de dados ArchiMer (2) Autor Lurton, Xavier (2) Vrignaud, Christophe (2) Augustin, Jean-marie (1) Degrendele, Koen (1) Le Bas, Tim (1) Loyer, Sophie (1) Mathieu, Gregory (1) Roche, Marc (1) Sinquin, Jean-marc (1) Mais... Palavra-chave Calibration (1) Monitoring (1) Multibeam echosounder (1) Reference area (1) Repeatability (1) Seafloor backscatter (1) Mais... Tipo do documento Text (2) Ano 2018 (1) 2016 (1) País France (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Control of the repeatability of high frequency multibeam echosounder backscatter by using natural reference areas ArchiMer Roche, Marc; Degrendele, Koen; Vrignaud, Christophe; Loyer, Sophie; Le Bas, Tim; Augustin, Jean-marie; Lurton, Xavier. The increased use of backscatter measurements in time series for environmental monitoring necessitates the comparability of individual results. With the current lack of pre-calibrated multibeam echosounder systems for absolute backscatter measurement, a pragmatic solution is the use of natural reference areas for ensuring regular assessment of the backscatter measurement repeatability. This method mainly relies on the assumption of a sufficiently stable reference area regarding its backscatter signature. The aptitude of a natural area to provide a stable and uniform backscatter response must be carefully considered and demonstrated by a sufficiently long time-series of measurements. Furthermore, this approach requires a strict control of the acquisition... Tipo: Text Palavras-chave: Multibeam echosounder; Seafloor backscatter; Repeatability; Calibration; Reference area; Monitoring. Ano: 2018 URL: http://archimer.ifremer.fr/doc/00422/53384/54234.pdf DORIS: Processing and management of Sound Velocity Profiles for echosounding applications ArchiMer Sinquin, Jean-marc; Vrignaud, Christophe; Mathieu, Gregory; Lurton, Xavier. If a bathymetric echosounder is the essential device to carry on hydrographic surveys, other external sensors are absolutely also necessary (positioning system, motion unit or sound velocity profiler). And because sound doesn‛t go straight away into the whole bathymetric swath its measurement and processing are very sensitive for all the water column. DORIS is the very answer for an operational sound velocity profile processing. Tipo: Text Ano: 2016 URL: http://archimer.ifremer.fr/doc/00353/46466/46239.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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