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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
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Processing backscatter data: from datagrams to Angular responses and mosaics ArchiMer
Schimel, Alexandre; Beaudoin, Jonathan; Gaillot, Arnaud; Keith, Gordon; Le Bas, Tim; Parnum, Iain; Schmidt, Val.
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Ano: 2015 URL: http://archimer.ifremer.fr/doc/00269/37977/36061.pdf
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