捷联式光纤陀螺罗经系统误差分析  

Error Analysis of Strapdown Optic Fiber Gyro Compass

作　　者：高亚楠[1] 陈家斌[1] 杨亭鹏[1] 

机构地区：[1]北京理工大学信息科学技术学院自动控制系,北京100081

出　　处：《北京理工大学学报》2005年第5期423-426,共4页Transactions of Beijing Institute of Technology

基　　金：国家部委预研项目(04413090503)

摘　　要：对采用光纤陀螺的捷联式罗经系统进行了研究.提出了使用惯性组件旋转调制技术提高光纤陀螺捷联式罗经系统精度的方法,分析了罗经系统的误差特性.针对旋转组件的误差,在系统初始对准过程中,应用限定记忆的Kalman滤波进行状态估计,提高了对准精度.静止基座的初始对准仿真结果表明,航向失准角估计误差均方差为0.159°.The strapdown optic fiber gyro inertial navigation system is studied. A method to rotate the inertial measure unit is presented to improve the system accuracy. Error features of the gyro compass is analyzed. For the error of the rotation unit, a finite memory Kalman filter is applied to estimate the states during the initial alignment. It improves the accuracy of the alignment. Simulation results show that the mean square error of initial yaw alignment is about 0.159°.

关 键 词：光纤陀螺 捷联惯性导航 旋转组件 限定记忆Kalman滤波 

分 类 号：U666.12[交通运输工程—船舶及航道工程]