Acoustic positioning system

Details Acoustic positioning system Acoustic positioning system

1982-09-24

1985-05-07

Farley, Richard A.

Communications, electrical: acoustic wave systems and devices

Transponders

With plurality of transponders

367127, 367128, G01S 172, G01S 1588

Patent

active

045162263

ABSTRACT:
Acoustic positioning device for a vessel comprising N transponders (B.sub.1 . . . B.sub.i . . . B.sub.N).
A fixed acoustic transmitting means (E) periodically transmits acoustic pulses at frequency f. The responses of the transponders (B.sub.1 . . . B.sub.i . . . B.sub.N) are received by the acoustic array (A.sub.1, A.sub.2) of the vessels. The time origins are transmitted by a radio antenna to the surface vessel. In the case of submarines, two stable clocks are used, one of which is on board the submarine. Processing circuits make it possible to know the position of submarines.
Application to the positioning of vessels in an oil production field or for oceanographic research.

REFERENCES:
patent: 3270345 (1966-08-01), Schauffler
patent: 3860900 (1975-01-01), Scudder
Holmes, Proc. of the Conference on Elec. Eng. in Ocean Tech., pp. 403-421, Sep. 1970.

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