针对舰船惯导在极区导航时,高纬度地区经度线快速收敛导致传统基于地理坐标系的传递对准模型和方程不适用的问题,文中提出了一种基于逆坐标系的传递对准方法。设计了基于逆坐标系的“速度+姿态”匹配传递对准的滤波模型,对舰船主子惯导之间的固定安装误差角进行估计,解决了在高纬度以及极区附近无法进行传递对准的问题。通过仿真验证了该算法的有效性。

A new transfer alignment algorithm was introduced for ship INS navigating in polar regions. Since rapid convergence of the Earth's meridians, the transfer alignment model and equations based on the traditional geographic coordinate system were no longer applicable. To solve the problem, an inverse coordinate system was employed in this paper. A "velocity and attitude" matching Kalman filter was designed to estimate the fixed misalignment angle between MINS and SINS. The simulation results show that the algorithm is effective.