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![]() In this study, an integrated approach for hydrographic surveying is introduced and evaluated in terms of its efficiency in comparison with the traditional methods of hydrographic surveying. ![]() The principle of echo-sounders is basic - by measuring the two-way travel time between the acoustic waves transmitted on sea surface and those reflected at seafloor. Hydrographic echo sounders are used to measure the depth to the seafloor by using the properties of acoustic waves.
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