High-precision fiber-optic gyroscope inertial measurement device calibration method

The invention discloses a high-precision fiber-optic gyroscope inertial measurement device calibration method which comprises the following steps: S1, respectively forwards turning a fiber-optic gyroscope inertial measurement device by 90 degrees, 180 degrees and 270 degrees for three times according to three axes of oi shaft (i refers to X, Y and Z), reversely rotating the device by 90 degrees, 180 degrees and 270 degrees for three times, and returning to an initial position; and S2, totally moving by 19 positions comprising the previous 18 turning positions and the initial position, fully exciting the error of the instrument under static and dynamic conditions, and performing optimal estimation by utilizing a parameter estimation method. According to the method disclosed by the invention, repeated electrification and power failure are not needed, the device is only turned according to a certain sequence, the parameters can be identified, and the influence caused by inconsistent reference in the repeated electrification and calibration process is avoided.