Passive underwater range measurement acoustic system

Details Passive underwater range measurement acoustic system Passive underwater range measurement acoustic system

1982-04-05

1984-10-30

Farley, Richard A.

Communications, electrical: acoustic wave systems and devices

Distance or direction finding

With beam steering, scanning, or focussing

367125, G01S 380, G01S 518

Patent

active

044803222

ABSTRACT:
A range measurement system for a submarine also having a passive monitoring system with a beam forming circuit, one beam of which may be selected by a signal V.sub.N from a tracking computer. Two assemblies of three hydrophones are located respectively on the port side and on the starboard side of the submarine. The signals supplied by these receivers are correlated with a beam signal S.sub.V of the passive monitoring system selected supplying the delays of these signals. A computer receiving these delay values supplies to the tracking computer the values of the bearing angle .alpha. and the distance D of the noise source.

REFERENCES:
patent: 3978445 (1976-08-01), Gravett
patent: 4207621 (1980-06-01), Clearwaters et al.
patent: 4283767 (1981-08-01), Rountree

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