Precise Acoustic Navigation and Position Keeping

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Abstract
The advent of the highly mobile deep submersible, designed to operate near the ocean floor, has created a requirement for precise navigation. Due to the operator's extremely short range of vision at depth, means other than visual aids are required to accomplish search, location and operational missions. Also, surface ship escorts must be able to maintain position and direct the submersible to specific areas. It can be shown that: 1) the long baseline acoustic system is the most accurate navigation method for such submersibles; and 2) the surface vessel may also use it for tracking.

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