Data/hora: 07/06/2024 01:18:39

Provedor de dados: | 5
País: | France
Título: | A Measurement Quality Factor for Swath Bathymetry Sounders
Autores: | Lurton, Xavier; Augustin, Jean-marie.
Data: | 2010-10
Ano: | 2010
Palavras-chave: | Bathymetry; Interferometry; Multibeam echosounder (MBES); Sonar.
Resumo: | The quality estimation associated with individual soundings measured and computed by swath bathymetry sonars is a paramount issue which is most often imperfectly addressed today by sonar manufacturers. In this paper, a unified definition is proposed for a quality factor usable for all swath bathymetry sonars; the depth-relative error is directly estimated from the signal characteristics used in the sounding computation. The basic algorithms are presented for both phase-difference (oblique incidence) and amplitude (normal incidence) detection, and can be readily implemented in any swath bathymetry system using these detection principles. This approach gives a direct access to the objective bathymetric performance of individual soundings, and hence avoids the explicit estimation of intermediate quantities such as the signal-to-noise ratio (SNR). It makes possible intercomparisons between different systems (multibeam sounders versus interferometric sonars) and processing principles (phase difference versus amplitude); it is expected to provide a useful input to bathymetry postprocessing software using quality estimation of individual soundings.
Tipo: | Text
Idioma: | Inglês
Identificador: | DOI:10.1109/JOE.2010.2064391
Editor: | Ieee-inst Electrical Electronics Engineers Inc
Relação: | https://w3.ifremer.fr/archimer/doc/00021/13191/
Formato: | application/pdf
Fonte: | Ieee Journal Of Oceanic Engineering (0364-9059) (Ieee-inst Electrical Electronics Engineers Inc), 2010-10 , Vol. 35 , N. 4 , P. 852-862
Fonte: | 2011 IEEE – All Rights Reserved