Fiber-optic gyroscope having angular velocity correction

Details Fiber-optic gyroscope having angular velocity correction Fiber-optic gyroscope having angular velocity correction

1992-11-25

1995-03-07

Turner, Samuel A.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

G01C 1972

Patent

active

053963270

ABSTRACT:
The light emitted from a laser diode is divided into two lights and the divided lights are introduced into a sensing loop such that the lights propagate through the sensing loop clockwise and counterclockwise. These lights are combined by a light receiving device and then a signal processing circuit calculates an angular velocity .OMEGA.'. The temperature near the laser diode is detected to obtain a correction value Kt, a current supplied to the laser diode is detected to obtain a correction value Ki and a corrected angular velocity .OMEGA. is obtained by calculating the product of the angular velocity with the correction values Ki and Kt, i.e., .OMEGA.=.OMEGA.'*Ki*Kt.

REFERENCES:
patent: 4986665 (1991-01-01), Yamanishi et al.
patent: 5272516 (1993-12-01), Ashizuka

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