随着我海军现代化进程的不断发展,舰载武器倍受关注,但风浪等因素影响产生的航母摇摆晃动,会给舰载机捷联惯性导航系统的初始对准带来困难。但考虑到惯性空间中航母摇摆晃动所产生的干扰加速度一般为谐波形式且幅值也小于重力加速度幅值,因此通过平滑处理后仍能从加速度计的输出中提取可用的重力加速度矢量信息,根据这一思路,文中给出了基于重力加速度积分矢量的解析自主粗对准和自主精对准的算法流程。理论分析和仿真结果表明,该运动基座上捷联惯导自对准方法能有效解决舰船系泊状态下舰载机的初始对准问题。

With the development of China's army modernization, the aircraft carrier weapon has been fielded as a strategic weapon. Because of the wave, the sea breeze effect causes the carrier deck swing and sway. This brings difficulty to carrier aircraft inertial navigation system SINS initial alignment. To solve this problem, it was inferred that aircraft carrier rocking shaking produced by the interference of acceleration in inertial space is the harmonic form and generally smaller than the acceleration due to gravity amplitude. So the gravity information can be got from output of acceleration after smoothing, and the process of acceleration due to gravity point's vector of analytic coarse alignment and fine alignment algorithm was put forward. Theoretical analysis and simulation results show that the moving base SINS alignment method can effectively solve the initial alignment of the aircraft carrier in the state of the ship mooring.