Wide angular diversity synthetic aperture sonar

Details Wide angular diversity synthetic aperture sonar Wide angular diversity synthetic aperture sonar

1980-11-03

1990-09-18

Tarcza, Thomas H.

Communications, electrical: acoustic wave systems and devices

Echo systems

Side scanning or contour mapping sonar systems

G01S 1500

Patent

active

049583301

ABSTRACT:
A side-looking sonar is provided with the wide angle acceptance characterics of a wide receiving beam together with the high resolution of a narrow receiving beam, while retaining both echo and shadow detection capability, through the use of a plurality of transducers disposed at such angles that their respective narrow beams cross one another at a location between the transducers and the ranges of interest and the distal portions of the beams lie adjacent one another. Individual returns received from the beams as the sonar is moved along a path normal thereto are coherently combined and detected.

REFERENCES:
patent: 3585578 (1971-06-01), Fischer, Jr.
patent: 3895340 (1975-07-01), Gilmour
patent: 3950723 (1976-04-01), Gilmour
patent: 4088978 (1978-05-01), Gilmour

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