Underwater sound localization system

Details Underwater sound localization system Underwater sound localization system

1995-09-06

1996-10-29

Lobo, Ian J.

Communications, electrical: acoustic wave systems and devices

Distance or direction finding

By combining or comparing signals

367118, 367120, 367129, G01S 380

Patent

active

055703240

ABSTRACT:
A control system connected to a passive underwater transducer array is located remotely from the array, e.g. above the surface of the water, to localize an underwater source of acoustic energy in a relatively simple manner by introducing listener-motion, such as head turning or body motion of a listener, into the sound localization process and does so without any underwater mechanical linkage of any kind. This is achieved by a pair of listener-motion coupled potentiometers, referred to as mixing-pots, located at the site of the listener, being connected to the outputs of an array of passive acoustic transducers, with the two outputs of the mixing-pots being coupled to a pair of headphones worn by the listener.

REFERENCES:
patent: 3592967 (1971-07-01), Harris
patent: 3715577 (1973-02-01), Bohman
patent: 4833659 (1989-05-01), Geil et al.
patent: 4933919 (1990-06-01), Geil et al.
"Hydrophone Techniques for Underwater Sound Pickup", Audio Engineering Society, 60 East 42nd St., NY, NY 10165, presented at 91st Convention 1991 Oct. 4-8, New York by Fred G. Geil, Westinghouse Oceanic Division, Annapolis, MD.

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