Position measuring device

Details Position measuring device Position measuring device

1976-02-11

1977-06-21

Farley, Richard A.

Communications: electrical

Selective

Having indication or alarm

G01S 518

Patent

active

040315002

ABSTRACT:
The invention concerns a position measuring device used for measuring the sition of a vessel equipped with three hydrophones arranged at the apexes of a right-angled triangle in relation to a transmitting beacon on the sea bed. Measuring of the differences in the travel time between the beacon and the various hydrophones as well as of the depth of the water and analogic calculating of the position of the vessel in a simple way and without approximation.

REFERENCES:
patent: 3383651 (1968-05-01), Koblick
patent: 3421138 (1969-01-01), Moulin et al.

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