Vibration rectification error reducer for fiber optic gyroscope

Details Vibration rectification error reducer for fiber optic gyroscope Vibration rectification error reducer for fiber optic gyroscope

1997-12-31

1999-08-31

Turner, Samuel A.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

G01C 1972

Patent

active

059460970

ABSTRACT:
An apparatus for eliminating or reducing vibration-induced errors due to vibration rectification by applying a variable weighting function at the demodulator or analog-to-digital converter by changing the size of the demodulator reference signal or the converter gain, respectively. The changing is performed within the frequency spectrum of the vibration. Sampling of the detector output may be utilized and the samples are accumulated and processed to remove the variations due to vibration, and the rotation rate is recovered by digital demodulation.

REFERENCES:
patent: 5278631 (1994-01-01), Hollinger et al.
patent: 5351123 (1994-09-01), Spahlinger
patent: 5469257 (1995-11-01), Blake et al.
Aritaka Ohno, Shinji Motohara, Ryuji Usui, Yuji Itoh and Kenichi Okada, "Development of Fiber-Optic-Gyroscope with Environmental Ruggedness", SPIE vol. 1585 Fiber Optic Gyros: 15.sup.th Anniversary Conference (1991).

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