Analysis of single-axial rotation modulation influence on FOG INS precision

Through the analysis of inertial instruments output error, the basic principles of automatically compensation of single-axis rotary inertial navigation system have been introduced. By analyzing the principle of the gyro drift error, we´ve got the conclusion that with the rotational speed getting bigger, gyro error becomes smaller. By making use of fiber optic gyro strapdown inertial navigation system to do the single-axial rotation experiment, the conclusions of the above analysis are confirmed. The results provide a basis for single-axis rotation speed and a necessary reference for the development of two-axis rotation system.