舰载武器捷联惯导系统极地传递对准算法

Inertial Navigation System of Ship Weapon Transfer Alignment Algorithm in the Polar Regions

关键词:  捷联惯导  极地导航  格网导航  传递对准

Key words:  Strap-down inertial navigation  Polar navigation  Grid navigation  Transfer alignment

摘要:

针对我国海军舰载武器捷联惯导系统的极地作战环境适应性问题，分析了武器惯导在极区条件遇到的两大挑战：极区航向输出与高精度对准问题。对于极区导航问题，在导航解算中设定不重合于地理系的格网导航坐标系以解决航向输出难题；对于高精度对准问题，也提出了格网导航系下的“速度＋姿态角速率”匹配传递对准解决方案。最后通过模拟仿真舰艇极地航行条件，验证了格网导航以及传递对准方法在极地条件的适用性。

Abstract:

The strap-down inertial navigation system (INS) for ship weapon faces two problems in the polar regions, and the problems make that the INS for missile of naval ships is disable. At the polar point of the earth, it is difficult to establish the heading. To solve the problem, the grid coordinate frame is presented, and the grid mechanization equations and error equations are derived by using the technique. The rapid and high precision transfer alignment also effects the ability of naval ships missile. In the grid coordinate frame, the velocity and angular rate matching Kalman filter is designed to estimate and correct the INS〖DK1〗’s velocity, attitude and inertial sensor errors. Finally, the simulation results show the navigation and transfer alignment algorithm makes the INS for missile of naval ships can be used in the polar rigions.