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°.
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
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)
