METHOD FOR PROCESSING OPTICAL FIBER GYROSCOPE RING INTERFEROMETER SIGNAL Russian patent published in 2002 - IPC

FIELD: measurement technology. SUBSTANCE: method involves compensating Sagnaque phase difference by means of one and the same triangular profile voltage by varying its parameters. Sagnaque phase difference compensation is carried out during the first segment of T10

period by measuring phase difference impulse amplitude change (π-Δ)∓φ_к radians and (π+Δ)±φ_к radians and measuring impulse amplitude change T10 radians and (π+Δ)±φ_к radians during the rest of the (π-Δ)±φ_к period. Δ is selected in the range of 0<Δ<π radians, φ_к is the controllable phase shift compensating Sagnaque phase difference and T10 = T₀ under φ_к = 0. Sagnaque phase difference control is carried out on suppressing the rotating on frequency f_c = 1/T10 at synchronous detector output. Gyroscope scale coefficient correction is carried out on synchronous detector output signal operating on the beam phase difference impulse amplitude change frequency in gyroscope ring- shaped interferometer by varying the modulating voltage parameters. EFFECT: small size information processing unit. 9 dwg