METHOD FOR CORRECTING GYROSCOPE DEMODULATION PHASE DRIFT

A gyroscopic sensor unit (101) detects a phase drift between a demodulated output signal and a demodulation signal during output of a quadrature test signal. A delay calculator (116) detects the phase drift based on changes in the demodulated output signal during application of the quadrature test signal. A delay compensation circuit (118) compensates for the phase drift by delaying the demodulation signal by the phase drift value.