Some of our clients request proof of the multi-beam echo sounder’s target detection performance. Senior Surveyor Dave Mundy of iXblue explains the process, which involves ground troofing of the multi-beam against a physical object of known dimensions. 

He demonstrates the process, whereby a pre-fabricated one metre cube is lowered to the sea floor at approximately 30 metres, and then the multi-beam passes over the top and to the side of the cube. The data is checked to confirm detection, and the number of soundings recorded with the overhead pass and off to the side are measured to confirm accuracy.

David Donohue

As Managing Director David's role is to ensure clients' surveys are undertaken with precision and to meet budgets, schedules and relevant survey standards. His particular driving passion is innovation and process improvement.

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