Optics: measuring and testing – By dispersed light spectroscopy – Utilizing a spectrometer
Patent
1991-11-25
1993-02-23
Turner, Samuel A.
Optics: measuring and testing
By dispersed light spectroscopy
Utilizing a spectrometer
G01C 1972
Patent
active
051894882
ABSTRACT:
Single and multiple axis fiber optic gyroscope systems employ orthogonal sequences to minimize the effects of both intra and inter-axis crosstalk. Sequences for driving electro-optic modulators are derived by examination of underlying primary and secondary demodulation sequences. Such underlying sequences are examined for orthogonality in accordance with a number of selection rules. When the selection rules are satisfied, the corresponding modulation sequences for driving the gyro(s) are identified and applied. By selecting the modulation waveforms in accordance with orthogonality criteria, one is assured of mean-zero bias errors within a predetermined number of loop transit times.
REFERENCES:
patent: 4591269 (1986-05-01), Mohr
Mark John G.
Pavlath George A.
Tazartes Daniel A.
Kramsky Elliott N.
Litton Systems Inc.
Turner Samuel A.
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