Acoustic sensor and projector module having an active baffle str

Details Acoustic sensor and projector module having an active baffle str Acoustic sensor and projector module having an active baffle str

1993-05-06

1994-08-02

Eldred, J. Woodrow

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

367162, 367176, 367140, 310326, 310337, H04R 1700

Patent

active

053352092

ABSTRACT:
An acoustic sensor and projector module for sonar applications includes a first acoustic transducer element operating as a projector to generate an acoustic beam, and a second acoustic transducer element acting as a hydrophone to sense pressure wave returns. When the second acoustic transducer element operates in a sensing mode, the first acoustic transducer element serves in conjunction with a baffle structure to baffle acoustic signals presented to the hydrophone. Similarly, when the first transducer element operates in a projecting mode to generate an acoustic beam, the second transducer element acts in combination with a baffle structure to baffle acoustic signals emitted by the projector.

REFERENCES:
patent: 2746026 (1956-05-01), Camp
patent: 3409869 (1968-11-01), McCool et al.
patent: 3480906 (1969-11-01), Thompson
patent: 4004266 (1977-01-01), Cook et al.
patent: 4158189 (1979-06-01), Wardle
patent: 4166967 (1979-09-01), Benes et al.
patent: 5175709 (1992-12-01), Slayton et al.

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