Sonar apparatus

Details Sonar apparatus Sonar apparatus

1989-11-20

1990-11-13

Tarcza, Thomas H.

Communications, electrical: acoustic wave systems and devices

Echo systems

Side scanning or contour mapping sonar systems

G01S 1500

Patent

active

049707000

ABSTRACT:
Side looking sonar apparatus on a carrier vehicle obtains an acoustic picture of a target area below the vehicle from some minimum range out to some maximum range on either side of the vehicle. An angle look sonar obtains an acoustic picture within the gap portion between the minimum range points of the side looking sonar. Signals are obtained indicative of the heading of the vehicle as well as its actual direction of motion. These signals are utilized to generate a crab angle signal which is utilized to rotate the angle look sonar apparatus to the proper orientation for obtaining complete bottom coverage even when the carrier vehicle is crabbing due to a cross current.

REFERENCES:
patent: 3895339 (1975-07-01), Jones et al.
patent: 3895340 (1975-07-01), Gilmour
patent: 3898608 (1975-08-01), Jones et al.

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