Device and method for reducing angular random walk in a ring las

Details Device and method for reducing angular random walk in a ring las Device and method for reducing angular random walk in a ring las

1993-08-31

1995-09-12

Turner, Samuel A.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

C01C 1968

Patent

active

054501970

ABSTRACT:
A ring laser gyroscope system includes light intensity detecting devices for detecting intensity of laser beams in the gyroscope. A computer processes the output and calculates the amount of backscatter in each beam. The measurement of backscatter is used to calculate the amount of movement required of mirrors in the gyroscope to change the path length of the laser beams an amount sufficient to minimize the backscatter in each. By minimizing backscatter, random walk of the laser beam is reduced.

REFERENCES:
patent: 4152071 (1979-05-01), Podgonski
patent: 4422762 (1983-12-01), Hotchings et al.
patent: 4473297 (1984-09-01), Simpson et al.
patent: 4653919 (1987-03-01), St. Jean et al.
patent: 5004344 (1991-04-01), Tazanks et al.

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