RING LASER GYROSCOPE AND ERROR ESTIMATION METHOD FOR A RING LASER GYROSCOPE

摘要

The present invention relates to an error estimation method of a ring laser gyroscope and a ring laser gyroscope, wherein the error estimation method of the ring laser gyroscope comprises a ring laser resonator and an angular vibrator angularly vibrating the ring laser resonator. In an error estimation method of a gyroscope, detecting a sine and cosine signal from interference of light traveling in opposite directions, respectively, and a signal whose size becomes zero at a position closer to the angular regression point is the sine and cosine If any one of the signals, using the other of the sine and cosine signals to predict the interference phase of the light at the regression point of the angular vibration, and estimates the lock-in error using the predicted interference phase It includes the steps. Accordingly, the present invention provides an error estimation method for improving the estimation accuracy of lock-in error.