Ring laser gyroscope dither signal remover

Details Ring laser gyroscope dither signal remover Ring laser gyroscope dither signal remover

1992-04-14

1993-08-24

Turner, Samuel A.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

G01C 1964

Patent

active

052393631

ABSTRACT:
Dither applied to ring laser gyroscopes in order to counteract lock-in results in an unwanted signal that appears in the gyroscopes output. The invention is a way of reducing the unwanted signal due to dither. The proposed solution comprises decoding the gyroscope output signal into respective signals which represent clockwise and counter-clockwise motion, delaying a portion of each of these signals, and combining the delayed and non-delayed signals to derive an output representative of rotation of the gyroscope--the dither having a reduced effect on the output.

REFERENCES:
patent: 3627425 (1971-12-01), Doyle
patent: 4826320 (1989-05-01), Callaghan et al.

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