Spotlight-mode synthetic aperture side-look sonar

Details Spotlight-mode synthetic aperture side-look sonar Spotlight-mode synthetic aperture side-look sonar

1994-04-07

1995-05-02

Pihulic, Daniel T.

Communications, electrical: acoustic wave systems and devices

Echo systems

Side scanning or contour mapping sonar systems

367104, G01S 1589

Patent

active

054126185

ABSTRACT:
A side-look sonar system and method apply a spotlight-mode synthetic aperture technique to provide increased image resolution and a long receive aperture. A control circuit activates mechanical drives to rotate projecting and receiving sonar transducers as the carrier vehicle on which the transducers are mounted moves relative to a target. The mechanical drives rotate the transducers as a function of the rate of movement of the carrier vehicle to direct receiving and projecting surfaces of the transducers at the target for an extended period of time. An image processor uses conventional beamforming techniques to form a high resolution image of the target based on the acoustic energy samples acquired by the receiving transducer.

REFERENCES:
patent: 4802148 (1989-01-01), Gilmour
patent: 4970700 (1990-11-01), Gilmour et al.

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