Underwater acoustic beacon and method of operating same for...

Details Underwater acoustic beacon and method of operating same for... Underwater acoustic beacon and method of operating same for...

2008-07-29

2008-07-29

Pihulic, Dan (Department: 3662)

Communications, electrical: acoustic wave systems and devices

Transmitter systems

With beam forming, shaping, steering, or scanning

Reexamination Certificate

active

11340006

ABSTRACT:
An underwater acoustic beacon comprises a cylindrical transducer and at least one spiral wavefront transducer aligned along a common central axis. For use in underwater navigation, the cylindrical and spiral wavefront transducers are activated singly and in combination in accordance with a prescribed sequence.

REFERENCES:
patent: 3721950 (1973-03-01), Jorgensen et al.
patent: 2019826 (1994-09-01), None

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