Self-Compensation Method of Constant Drift Error of Gyroscope

To solve the problem of gyroscope constant drift divergence in strapdown inertial navigation system, a self-compensation method using missile rotation to adjust is proposed. The constant drift of gyroscope can be modulated into periodic signal by spin modulation of missile body without special rotating mechanism. The influence of constant drift can be effectively eliminated by integral operation. The simulation results show that the method can effectively suppress the error growth, improve the navigation accuracy of SINS, and has good adaptability to the change of missile rotation speed.