An underwater acoustic positioning system[1][2] is a system for the tracking and navigation of underwater vehicles or divers by means of acoustic distance and/or direction measurements, and subsequent position triangulation. Underwater acoustic positioning systems are commonly used in a wide variety of underwater work, including oil and gas exploration, ocean sciences, salvage operations, marine archaeology, law enforcement and military activities.
- ^ University of Rhode Island: Discovery of Sound in the Sea
- ^ Underwater Acoustic Positioning Systems, P.H. Milne 1983, ISBN 0-87201-012-0
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