Acoustic direction finder

Details Acoustic direction finder Acoustic direction finder

1976-07-07

1978-10-10

Moskowitz, Nelson

Communications: electrical

Selective

Having indication or alarm

340 16R, 343113R, G01S 380

Patent

active

041199421

ABSTRACT:
An acoustic direction finder which identifies and displays bearing of an underwater received signal without the requirement of scanning the ambient space. The output signals of hydrophones at the ends of a pair of orthogonally located dipoles are applied to differential amplifiers to provide orthogonal dipole response characteristics, and an in-phase sum of the signal at the center of the dipoles is obtained. The differential amplifier output signals are integrated and the resultant signals are applied to individual multiplying means with the sum signal whereby a pair of X and Y coordinate deflection signals are obtained, which are applied to a display device.

REFERENCES:
patent: 3763465 (1973-10-01), Tatge et al.
patent: 3838389 (1974-09-01), Buddruss et al.
patent: 3935575 (1976-01-01), Leisterer et al.

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