Optics: measuring and testing – By dispersed light spectroscopy – Utilizing a spectrometer
Patent
1990-06-01
1992-07-28
Turner, Samuel A.
Optics: measuring and testing
By dispersed light spectroscopy
Utilizing a spectrometer
G01C 1972
Patent
active
051336006
ABSTRACT:
A method and device for reading out a fiber gyroscope based on the concept of determining, by gating the light signal for particular time intervals, only one particular phase section of the read-out signal of a photodetector of the fiber optic gyroscope modulated with a periodic function. Further phase sections are determined in sequence and cyclically in the same manner so that the entire photodetector signal is detected after one full cycle. Signals associated with individual phase sections are averaged separately and processed to obtain a rotation rate-proportional signal. The read-out signals can also be processed so that a control signal for deviation of the phase modulator is obtained and/or the gyroscope scale factor is stabilized.
REFERENCES:
"Fiber Optic Laser Gyro Signal Detection and Processing Technique", Martin et al., SPIE vol 139, 1978, pp. 98-102.
Kramsky Elliott N.
Litef GmbH
Turner Samuel A.
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