Shallow-water seafloor characterization for high-frequency multibeam echosounder: image segmentation using angular backscatter
Abstract
Sonar images from multibeam echosounders are submitted to various degradations, partly due to the sensor itself: Signal artefacts and corresponding corrections are presented, both for signal processing and for array directivity effects. The corrected image is processed using a segmentation method accounttng for angular variations of backscattering strength, allowing to compensate effects of specular reflection and bathymetry These various points are illustrated by experimental data shown at various processing stages.
Report Number
CP-45Source
In: High Frequency Seafloor Acoustics (SACLANTCEN Conference Proceedings CP-45), 1997, pp. 313-322Date
1997Author(s)
Lurton, Xavier
; Augustin, Jean-Marie
; Dugelay, Samantha
; Hellequin, Laurent
; Voisset, Michel