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See Bed Bathymetry Sonar
The See-Bed Multibeam Echosounder is based on Marine Electronics digital range of electronically scanning multibeam sonar’s utilising an improved wide band technique. Measuring 64 or 128 soundings in a single swath the sonar head can be mounted from any small craft, towed underwater platform or ROV / AUV. The 64 or 128 beams combine to give a 90 / 120 degree by 2.5 degree simultaneous sonar cross section below the vessel working at speeds in excess of 10 knots. Using wide band technology the system can accurately measure a profile of the seabed / river bed that is 3.5 times the measured water depth. This digital technique also allows high accuracy of the outer beams when combined with the advanced bottom detection algorithm that combines both phase and amplitude detection methods. A motion reference unit can be integrated into the system to stabilise data from the sonar in response to pitch/roll movement.
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Marine Electronics Ltd.
Underwater Acoustic Engineering.
