Laser radar utilizing pulse-tone waveform

Details Laser radar utilizing pulse-tone waveform Laser radar utilizing pulse-tone waveform

1985-04-19

1987-09-01

Gellner, Michael L.

Optics: measuring and testing

Range or remote distance finding

With photodetection

356 28, G03G 1500

Patent

active

046905510

ABSTRACT:
Pulse-tone laser radar utilizing an acousto-optic angular multiplexer and frequency shifter. The laser radar includes both a pulsed laser and a CW laser. A portion of the CW laser beam is utilized as a reference or local oscillator. An acousto-optic angular multiplexer passes the output of the pulsed laser when the acousto-optic multiplexer is in its off state and passes and frequency shifts the output of the CW laser when the acousto-optic multiplexer is in its on state. The acousto-optic angular multiplexer is operated to pass a pulse followed by a CW tail to generate the pulse-tone waveform. The return signal from a target is beat together with the local oscillator signal derived from the CW laser. The resulting beat signal includes both range and velocity information.

REFERENCES:
patent: 4190361 (1980-02-01), Dubrunfaut
patent: 4298280 (1981-11-01), Harney
patent: 4447149 (1984-05-01), Marcus et al.
patent: 4466738 (1984-08-01), Huang et al.
patent: 4537502 (1985-08-01), Miller et al.

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