METHOD TO INCREASE ACCURACY OF FIBRE-OPTIC GYROSCOPE DUE TO SUPPRESSION OF PARASITIC EFFECTS IN INTEGRAL-OPTICAL PHASE MODULATORS Russian patent published in 2015 - IPC G01C19/72 

Abstract RU 2566412 C1

FIELD: measurement equipment.

SUBSTANCE: method is realised by compensation of a parasitic mismatch signal with a third feedback circuit, where the signal arises due to low-frequency process in phase modulators of an integral-optical circuit (IOC) and results in instability of a zero signal, and also due to increased stability of scale ratio of the fibre-optic gyroscope due to more accurate setting of amplitude of the stepped serrated voltage, compensating for difference of Sagnac phases as it is supplied to phase modulators of IOC.

EFFECT: increased accuracy of a fibre-optic gyroscope containing two feedback circuits.

2 cl, 14 dwg

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RU 2 566 412 C1

Authors

Kurbatov Aleksandr Mikhajlovich

Kurbatov Roman Aleksandrovich

Dates

2015-10-27Published

2014-06-30Filed