The benefits of online analysis of sound speed profiles during data acquisition

By Hydrographic surveyor - Morten Sølvsteen, Danish Geodata Agency

Presentation outline

The two major uses of the ”skeleton”

1) Line planning 
Line planning for more efficient surveys.

2) On-line analysis of sound speed profiles during data acquisition
A method for analyzing overlapping areas in multibeam echosounder surveys is introduced. The method requires that the velocity of sound at the transducer is monitored during the survey.

The method applies the principle of least squares to determine the vertical offset and the bias of the swaths caused by insufficient knowledge of the velocity of sound in the water column below the transducer.

This presentation was given at the Teledyne RESON Underwater Technology Seminar in Copenhagen 2013.


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