Water dams scanned by side scan sonar
Journal
Sea Technology
Journal Volume
46
Journal Issue
12
Pages
57-60
Date Issued
2005
Author(s)
Song, G.-S.
Abstract
Scientists have found that rotating the towed fish or tilting the transducers to face the dipping surface in side scan sonar surveys, can easily create clear scanned underwater images with a relatively large gradient. An experiment was conducted on the EdgeTech 272TD towed fish transducer to detect the target situated on a slope in a reservoir. As the main beam was tilted 20° below the horizontal, the maximum signal should be 2.75 times the depth of towed fish without considering the refraction factor. The dipping angle of a scanned slope measures the degree of the rotated angle of transducer. The quality of the sonar image on the slope may be controlled by the distance related to the slope coverage. Adjusting the incident angle of acoustic beams from the transducer related to the dipping angle of the slope appeared simple and useful.
SDGs
Other Subjects
Acoustic beams; Dipping angle; Incident angle; Water dams; Acoustic transducers; Fisheries; Reservoirs (water); Scanning; Sonar; Underwater imaging; Dams; Acoustic transducers; Dams; Fisheries; Reservoirs (water); Scanning; Sonar; Underwater imaging; marine technology; sonar; transducer; underwater environment
Type
other