Tunable laser rangefinder and method

Details Tunable laser rangefinder and method Tunable laser rangefinder and method

1990-10-19

1993-04-27

Buczinski, Stephen C.

Optics: measuring and testing

Range or remote distance finding

With photodetection

342131, G01C 308, G01S 1308

Patent

active

052066975

ABSTRACT:
A tunable laser rangefinder having a wavelength tunable transmitter output and a wavelength tunable receiver that matches the transmitter wavelength. The transmitter provides laser energy output pulses that are reflected off a target and received by the receiver. The time between the transmitter pulse and the receiver pulse is determined and the range of the target is calculated. The transmitter and receiver frequencies are changed from pulse to pulse to provide good countermeasure immunity. In a preferred embodiment the rangefinder uses a solid state, reliable cobalt magnesium fluoride laser to provide laser energy in a region of the infrared spectrum which is eye safe and has good atmospheric transmission.

REFERENCES:
patent: 3110897 (1963-11-01), Laurent
patent: 3437820 (1969-04-01), Thompson, Jr. et al.
patent: 3487406 (1969-12-01), Howard
patent: 4184767 (1980-01-01), Hughes et al.
patent: 4552456 (1985-11-01), Endo
patent: 4915499 (1990-04-01), Gidon et al.
patent: 4928152 (1990-05-01), Gerardin

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