Navigation system for maneuvering a structure about a...

Details Navigation system for maneuvering a structure about a... Navigation system for maneuvering a structure about a...

G - Physics

01

S

349/25, 349/32

G01S 15/08 (2006.01) F16L 1/20 (2006.01) G05D 1/02 (2006.01)

Patent

CA 1052901

ABSTRACT The invention relates to a method of guiding an under- water structure about a submerged, sound-reflecting object. A dual-ranging sonar is mounted on a surface craft that tows the structure. The structure carries at least two spaced-apart, electro-acoustic transducers for consecutively transmitting sound beams into the body of water and for detecting the echoes of the sound beams for recordation by the sonar. The beams are directed mostly downwardly and toward each other, and the records made by the sonar are used by the surface craft to maneuver the structure about the submerged object. The records can be used to provide a continuous display of the position of the struc- ture relative to the submerged object.

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