联邦滤波在光纤陀螺捷联惯导系统传递对准中的应用

对舰载武器光纤陀螺捷联惯导系统相对舰船综合导航信息系统的动基座传递对准技术进行了研究，提出了将挠曲变形、时间延迟作为系统状态，并给出了系统状态方程和量测方程。采用联邦滤波作为信息融合算法的传递对准方法，对系统方程中的状态变量进行了可观测度分析，并推导了速度、姿态匹配子滤波器方程及主滤波器方程。最后进行了仿真试验，试验结果表明:该传递对准方法使方位精度提高20%以上；该方法能够有效解决舰船条件下光纤陀螺捷联惯导系统的传递对准。

Application for transfer alignment of FOG SINS based on federated filter

Researched on the moving base transfer alignment of the ship synthesize navigation information system on the shipborne weapons associating integrated navigation information system of the warship, put forward flexure and time delay as system state, and gave system state equation and measurement equation. This paper used federal filter as the information fusion algorithm for transfer alignment program, variable of system equation was analyzed by method of PWCS, the velocity and attitude matching sub-filters equation and major filter equation were deduced. At last, this method was simulated and the result of simulation showed azimuth misalignment used federated filter was better than traditional filter 20 percent; application for federated filter could resolve the problem of transfer alignment for FOG SINS about the ship is effectively.