Side looking sonar apparatus

Details Side looking sonar apparatus Side looking sonar apparatus

1988-11-30

1990-03-27

Tarcza, Thomas H.

Communications, electrical: acoustic wave systems and devices

Echo systems

Side scanning or contour mapping sonar systems

342 25, G01S 966

Patent

active

049126857

ABSTRACT:
A focused arc transducer which lies on an arc of a circle having a radius of curvature R is used as the transmitting transducer in a side looking sonar system. The arc lies in a plane which is tilted slightly with respect to a vertical orientation and the apparatus as utilized at an altitude H above a target area wherein H in one embodiment is greater than the radius of curvature and in another embodiment where it is less than the radius of curvature. This operation results in a desired trapezoidal insonification pattern on the target area with the pattern at maximum range being a little wider than the collective width of a plurality of receiver beams for a multibeam system.

REFERENCES:
patent: 3585579 (1971-06-01), Dorr et al.
patent: 3742436 (1973-06-01), Jones
patent: 3950723 (1976-04-01), Gilmour
patent: 3967234 (1976-06-01), Jones
patent: 4024490 (1977-05-01), Wood
patent: 4199746 (1980-04-01), Jones et al.
patent: 4802148 (1989-01-01), Gilmour

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