Communications – electrical: acoustic wave systems and devices – Echo systems – Distance or direction finding
Patent
1988-01-04
1990-06-19
Tarcza, Thomas H.
Communications, electrical: acoustic wave systems and devices
Echo systems
Distance or direction finding
367104, G01S 1596
Patent
active
049359061
ABSTRACT:
Images of underwater features, animate and inanimate, are produced from substantial distances in any direction around a boat, using small and easily mountable sonar devices, including three sonar transducers, two being stationary and the third being directable, the transducers being operable at various ultrasonic frequencies. Under keyboard control and using completely integrated electronic circuitry, images and echo sounding reports are generated on a graphic video display. The images include a sector-shaped image from a sector scan which covers a selected range of azimuth angles at a selected down angle.
REFERENCES:
patent: 3793619 (1974-02-01), Regis
patent: 3868622 (1975-02-01), Knott
patent: 4282590 (1981-08-01), Wingate
patent: 4300216 (1981-11-01), Barton, Jr.
patent: 4815048 (1989-03-01), Boucher et al.
Model 480 LCD Video-Sonar, 1983, p. 8.
3D-100 Installation and Operation Manual, Dec. 1987.
Ray Jefferson Color Telescan-2000 Instruction Manual, 1987.
Cabela's 1987 Christmas Catalog, Eagle 3D-100 advert, 12-25-1987.
Bass Pro Shops 1988 Catalog, Eagle 3D-100 advertisement, 1-1988, p. 442.
Baker William
Nortrup Kevin E.
Stevens James C.
Pihulic Daniel T.
Span Inc.
Tarcza Thomas H.
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