Communications – electrical: acoustic wave systems and devices – Echo systems – Side scanning or contour mapping sonar systems
Patent
1993-01-21
1993-11-09
Pihulic, Daniel T.
Communications, electrical: acoustic wave systems and devices
Echo systems
Side scanning or contour mapping sonar systems
367 98, 367 99, 367104, 367111, 367900, 367901, G01S 1596
Patent
active
052609120
ABSTRACT:
A side-looking fish finding apparatus transmits a sonar pulse approximately horizontally into a body of water, and then monitors echoes from the pulse. The time interval between successive sonar pulses is varied in a random manner in order to permit two or more similar units to be used in close proximity to each other without significantly interfering with each other. An individual echo is treated as the detection of a fish if it has a magnitude above a predetermined threshold, if it has a length within a predetermined range bounded by upper and lower limits, if it is preceded by a leading space interval free of other echoes and having a predetermined duration, if it is followed by a trailing space interval free of other echoes and having a predetermined duration, the duration of the trailing space interval being less than the duration of the leading space interval, and if an equivalent echo is received in response to each of the next four successive sonar pulses.
REFERENCES:
patent: D278690 (1985-05-01), Steensland et al.
patent: D329615 (1992-09-01), Stiner
patent: D329616 (1992-09-01), Stiner
patent: 3548370 (1970-12-01), Hoxsie
patent: 3683324 (1972-08-01), Hoxsie
patent: 3721124 (1973-03-01), Franks
patent: 3740705 (1973-06-01), Lowrance
patent: 3747053 (1973-07-01), Austin
patent: 3752431 (1973-08-01), McBride
patent: 3781777 (1973-12-01), Lowrance
patent: 3845928 (1974-11-01), Barrett et al.
patent: 3879697 (1975-04-01), Richard
patent: 3946295 (1976-03-01), Moore
patent: 3950724 (1976-04-01), Honda
patent: 4084150 (1978-04-01), Massa
patent: 4110727 (1978-08-01), Kriege
patent: 4186372 (1980-01-01), Maloy
patent: 4189702 (1980-02-01), Maloy
patent: 4198702 (1980-04-01), Clifford
patent: 4225951 (1980-09-01), Menin et al.
patent: 4282590 (1981-08-01), Wingate
patent: 4322827 (1982-03-01), Weber
patent: 4369508 (1983-01-01), Weber
patent: 4420824 (1983-12-01), Weber
patent: 4456210 (1984-06-01), McBride
patent: 4479206 (1984-10-01), Granberg et al.
patent: 4480809 (1984-11-01), Healey
patent: 4612633 (1986-09-01), Weber
patent: 4829493 (1989-05-01), Bailey
patent: 4873676 (1989-10-01), Bailey et al.
patent: 4879697 (1989-11-01), Lowrance et al.
patent: 4888747 (1989-12-01), Williams
patent: 4907208 (1990-03-01), Lowrance et al.
patent: 4938165 (1990-07-01), Williams et al.
patent: 4949318 (1990-08-01), Patrick et al.
patent: 4951268 (1990-08-01), Grall
patent: 4980868 (1990-12-01), Teel
patent: 5065371 (1991-11-01), Leavell et al.
patent: 5109364 (1992-04-01), Stiner
patent: 5142502 (1992-08-01), Wilcox et al.
patent: 5142505 (1992-08-01), Peynaud
patent: 5148412 (1992-09-01), Suggs
patent: 5160931 (1992-11-01), Brown
patent: 5163026 (1992-11-01), Peynaud
"New Wesmar Powerscan Sonars", marketing brochure, 4 pages, 1985.
Kristensen, Finn, Hogne; "Simrad's New Sonar Flagship", Newsletter Article, pp. 4-5, Jan. 1991.
"Wesmar Digital Color Sonar", marketing brochure, 4 pages, 1986.
Taylor, Buck; "Latest Skywalker Sonar!", Fishing World, pp. 12-13 Nov. 1992.
"A Sonar", pp. 14-15, Jan. 1991, Simrad Newsletter.
"Scout Owner's Manual", Computrol Inc., 1991.
Eagle Model 3D-100 manual, 1987, pp. 16 and 17.
Computrol, Inc.
Pihulic Daniel T.
LandOfFree
Side-looking fish finder does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Side-looking fish finder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Side-looking fish finder will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1148123