Research on FOG Random Errors Modeling Based on AFSA

Fiber-optic gyroscope random drift is not only the main errors influence gyroscope accuracy, but also the main factors influence Gyro´s performance reliability. It has a very important significance that using the time series analysis method, modeling random excursions of gyroscope, analyzes the main reasons causing gyroscope excursion withing historical data. Gyro model, usually by the ARMA(n, m) stochastic model, but the traditional ARMA model establishment method is relatively complicated. And parameter estimation algorithm based on AFSA can overcome ARMA model complexity. This paper models the random errors of Gyro used AFSA firstly, and gets good results, provides a new idea and method for time series analysis.