Laser radar system

Details Laser radar system Laser radar system

1990-03-01

1991-12-03

Buczinski, Stephen C.

Optics: measuring and testing

Velocity or velocity/height measuring

With light detector

356 45, G01P 336

Patent

active

050695452

ABSTRACT:
The invention is directed to a laser radar method for measuring velocity of moving objects wherein the laser light reflected from the measured object is coupled back into the laser resonator and then conducted to a heterodyne receiver. An amplification effect is produced by the interaction of the reflected signal with the laser active medium and the resonator and this amplification effect produces an improved signal
oise-ratio and makes possible a simpler configuration of the measuring arrangement.

REFERENCES:
patent: 3409370 (1968-11-01), King et al.
patent: 3476483 (1969-11-01), Weeks
patent: 3733129 (1973-05-01), Bridges
patent: 3790278 (1974-02-01), Buczek et al.
patent: 3860343 (1975-01-01), Janney et al.
patent: 3901597 (1975-08-01), White
patent: 3950100 (1976-04-01), Keene et al.
patent: 4643575 (1987-02-01), Hazeltine et al.
patent: 4861159 (1989-08-01), Breen
"Heterodyne and nonheterodyne laser transceivers" by R. J. Keyes, Review of Scientific Instruments 57 (4), Apr. 1986, pp. 519 to 528.

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