Ring laser gyroscope enhanced resolution system

Details Ring laser gyroscope enhanced resolution system Ring laser gyroscope enhanced resolution system

1991-04-22

1996-01-16

Hellner, Mark

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

G01B 902

Patent

active

054852730

ABSTRACT:
Disclosed herein is a Ring Laser Gyroscope Enhanced Resolution System comprising, in a preferred embodiment, a sampling frequency modulation phase-locked loop (or "chirp") which is used in combination with the fast filter. Enhanced resolution is achieved by using the fast filter (preferably a moving average digital filter) to gather optically integrated rate data and accumulate this data. During the data gathering process, the accumulated data is sampled at a rate set by a frequency modulated ("chirper") phase-locked loop in order to remove undesirable data due to aliasing effects upon the digital filter. In this manner, an enhanced resolution of the gyroscope angular measurement is achieved.

REFERENCES:
patent: 4533250 (1985-08-01), Callaghan
patent: 4634283 (1987-01-01), Mark et al.
patent: 4791460 (1988-12-01), Bergstrom
patent: 4818087 (1989-04-01), Dorschner

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