Acoustic ranging system

Details Acoustic ranging system Acoustic ranging system

1983-04-21

1986-06-24

Farley, Richard A.

Communications, electrical: acoustic wave systems and devices

Echo systems

310317, 367903, 367137, G01S 1510, G01S 752

Patent

active

045970688

ABSTRACT:
An acoustic transducer is connected to an electronically controllable time-dependent conductance so that energy may be rapidly applied to and extracted from the transducer and associated circuitry.

REFERENCES:
patent: 2562450 (1951-07-01), De Lano, Jr.
patent: 3296589 (1967-01-01), Ikrath
patent: 3731201 (1973-05-01), Fisbie
patent: 3985030 (1976-10-01), Charlton
patent: 4197539 (1980-04-01), Suzuki
patent: 4199245 (1980-04-01), Muggli
patent: 4282452 (1981-08-01), Hassler et al.
patent: 4369455 (1983-01-01), McConica et al.

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