Communications – electrical: acoustic wave systems and devices – Echo systems – Side scanning or contour mapping sonar systems
Patent
1978-12-19
1980-08-05
Farley, Richard A.
Communications, electrical: acoustic wave systems and devices
Echo systems
Side scanning or contour mapping sonar systems
367 91, 367 92, 367106, G01S 968
Patent
active
042165377
ABSTRACT:
This sonar system, placed on a vehicle such as a ship or a submarine, comprises transducer means for transmitting and receiving acoustic waves at two different frequencies, said reception means being adapted to generate echograms of the submerged surface from the received echoes of the transmitted pulses, the directivity diagram of said transducer means comprising a main transmission lobe whose axis is inclined with respect to a vertical line in a plane orthogonal to a first direction of displacement of the vehicle and a second transmission lobe oriented along a vertical line, means for determining the displacement velocity of the ship along said first direction, means for determining the water depth below the vehicle from the measured values of the propagation time of the waves transmitted along the direction of the secondary lobe and means for determining the displacement velocity of the vehicle in a direction orthogonal to the first one, by measuring the frequency of the acoustic waves received along a particular direction of the main transmission lobe.
REFERENCES:
patent: 3437987 (1969-04-01), Burg
patent: 3754207 (1973-08-01), Delignieres
patent: 4075599 (1978-02-01), Kosalos et al.
Farley Richard A.
Institut Francais du Pe'trole
LandOfFree
Sonar for the topographic representation of a submerged surface does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sonar for the topographic representation of a submerged surface , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sonar for the topographic representation of a submerged surface will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2283541