We conduct patch tests on our multi-beams to detect any fine misalignment between the survey sensors, allowing us to produce a highly accurate and finely calibrated data set. Senior Surveyor Dave Mundy explains the method, which involves post process analysis of the multi beam data to determine angle offsets in the transducers and motion sensors. Dave shows how biases are determined using software that maps a series of lines over a distinct feature on the sea floor and demonstrates data with and without the biases applied.


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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