Laser altimeter/profilometer apparatus

Details Laser altimeter/profilometer apparatus Laser altimeter/profilometer apparatus

1977-01-17

1978-12-19

Buczinski, S. C.

Optics: measuring and testing

Range or remote distance finding

With photodetection

343 9, 343 12A, 356 1, 356 5, 356 28, G01C 308

Patent

active

041303601

ABSTRACT:
Laser altimeter/profilometer apparatus utilizing a CW CO.sub.2 laser transmitter mounted on an aircraft so as to transmit a narrow laser beam towards the terrain below the aircraft. The scattered laser signals are received in a receiver mounted on the aircraft, some distance along the fuselage from the transmitter, and the doppler shift in frequency of the received signal is determined. That doppler shifted frequency is utilized to calculate the altitude of the aircraft above the ground over which it is flying.

REFERENCES:
patent: 3525568 (1970-08-01), Dreyfus
patent: 3528741 (1970-09-01), Benson et al.
patent: 3811774 (1974-05-01), Honeycutt et al.
patent: 3895384 (1975-07-01), Fathauer et al.
patent: 3958881 (1976-05-01), Keene et al.

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