Communications – electrical: acoustic wave systems and devices – Echo systems – Side scanning or contour mapping sonar systems
Patent
1989-03-20
1990-11-27
Steinberger, Brian S.
Communications, electrical: acoustic wave systems and devices
Echo systems
Side scanning or contour mapping sonar systems
367153, 181110, G01S 1500
Patent
active
049742132
ABSTRACT:
A three-dimensional large scale rectilinear array of hydrophones comprising a plurality of equally spaced, fixed position, omni-directional, electro-acoustic transducers, utilizes aperture steering circuits to create a polar coordinate map indicating the bearing and elevation of incoming sound signals. The attitude and depth of the array is controlled by an array maneuvering system to position the array for maximum signal strength and to rotate the array to a horizontal position for maneuvering in shallow water. The geometric configuration combined with digital signal processing circuits provide improved sound detection threshold over linear and single planar arrays. An acoustically transparent housing is used to enclose the array. The shape of the housing and supporting structural frame are adapted to limit self-induced background noise.
The hydrophones are also alternately connected to circuits for activating the hydrophone array to produce a low frequency (100 to 1000 Hz) frequency sound pulse defining a beam having a predetermined vertical and horizontal solid angle and predetermined bearing and azimuth.
REFERENCES:
patent: 3089118 (1963-05-01), Baumann
patent: 3113286 (1963-12-01), Miller et al.
patent: 3268856 (1966-08-01), Wallen
patent: 3277433 (1966-10-01), Toulis
patent: 3375488 (1968-03-01), Bridges et al.
patent: 3490024 (1970-01-01), Sherrill et al.
patent: 3792423 (1974-02-01), Becker et al.
patent: 3858165 (1974-12-01), Pegg
patent: 3964014 (1976-06-01), Tehon
patent: 4003015 (1977-01-01), Pipkin
patent: 4112411 (1978-09-01), Alais et al.
patent: 4210905 (1980-07-01), Renzel et al.
patent: 4281551 (1981-08-01), Gaudriot et al.
patent: 4397008 (1983-08-01), Ziese
patent: 4480322 (1984-10-01), Orieux et al.
patent: 4661938 (1987-04-01), Jones et al.
patent: 4694434 (1987-09-01), von Ramm
patent: 4872144 (1989-10-01), Young et al.
Strategic Antisubmarine Warfare and Naval Strategy, Tom Stefanick, 1987, Institute for Defense and Disarmament Studies.
Sonar Signal Processing, George Wash. Univ. Course #475, W. R. Hahn and Edgar H. Neal, Class Notes (circa 1979).
Steinberger Brian S.
Tipton Robert R.
LandOfFree
Passive active underwater sound detection apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Passive active underwater sound detection apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Passive active underwater sound detection apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1037456