光纤陀螺随机漂移建模及其在惯导误差方程中的应用  

Building model of the drift of the fiber optic gyroscope and application in the error equation of inertial navigation system

作　　者：郭铃[1] 吴训忠[1] 金毅[1] 

机构地区：[1]空军工程大学航空航天工程学院,陕西西安710038

出　　处：《光学技术》2013年第4期328-330,共3页Optical Technique

摘　　要：针对光纤陀螺随机漂移模型时序无法直接应用卡尔曼滤波分析的问题,在对陀螺漂移建模分析的基础上,利用一阶马尔柯夫过程等效拟合陀螺漂移模型,并通过Allan方差分析拟合的合理性。对惯导系统误差方程进行了状态扩充,为进一步实现导航系统的滤波分析奠定了理论基础。According to the bug of Kalman filter applying in the analysis of the Fiber Optic Gyroscope （FOG）’s random drift, a method based on the modeling and the analysis is introduced, the gyro’s drift model with the first-order Markov process is simulated equivalently, the rationality of the simulation with the Allan variance is analyzed. The state equation of the inertial navigation system’s error equation is extended, the theory foundation of the future carrying out of the filter and analysis of the navigation system is established.

关 键 词：光学测量 光纤陀螺 ARMA建模 ALLAN方差 马尔柯夫过程 

分 类 号：V241[航空宇航科学与技术—飞行器设计]