Laser distance and altitude measuring apparatus

Details Laser distance and altitude measuring apparatus Laser distance and altitude measuring apparatus

1990-01-16

1990-12-18

Tarcza, Thomas H.

Optics: measuring and testing

Range or remote distance finding

With photodetection

244 317, G01S 1787

Patent

active

049782215

ABSTRACT:
Two laser distance measuring functions are preformed on board of a ground-hugging cruise missile by at least one laser distance meter for taking downwardly directed altitude measurements and diagonally or slantedly forwardly directed distance measurements for producing corrected altitude signals for use in controlling the flight of the missile. Both types of measurements can be made by one laser distance meter that is tiltable in the required direction or two laser units are provided. The correction provides a clear recognition of artificial fog by evaluating both types of measured values in an intelligent signal processing unit which compares the intensities of the measured values from the same ground locations, determines the extinction coefficient of the fog and takes the angular distribution of the back-scattering intensity of the laser beams into consideration for correcting the altimeter readings.

REFERENCES:
patent: 4495589 (1985-01-01), Hirzel
patent: 4671650 (1987-06-01), Hirzel et al.
patent: 4709142 (1987-11-01), Dahl
patent: 4812035 (1989-03-01), Freedman et al.
patent: 4847481 (1989-07-01), Altmann

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