传统自主对准要求捷联惯导系统准确感应地球自转角速度，导致捷联惯导系统对准期间必须处于静止或微幅晃动状态，限制自主对准的适用范围，而且一般的舰载武器系统难以处于绝对静止状态。为实现舰载武器在晃动条件下的自主对准，本文研究提出了晃动基座下的自对准方案。首先，在粗对准阶段，基于重力加速度在惯性空间的投影量，将姿态阵分割为4个矩阵分别求取，减弱晃动对粗对准的影响；其次，利用晃动条件下系统可观测性提高的特点设计相关滤波器。通过实验验证了此对准方案的可行性。
Traditional autonomous alignment requires the SINS to accurately sense the angular velocity of the earth rotation, so the SINS must be in a static or slightly wobble state during alignment, which limits the applicable scope of autonomous alignment. Moreover, it is difficult for general shipborne weapon systems to be in an absolute static state.In order to realize the self-alignment of ship-borne weapons under the shaking condition, a self-alignment scheme under the shaking base is proposed in this paper.Firstly, in the coarse alignment stage, based on the projection of gravity acceleration in the inertial space, the attitude array is divided into four matrices and calculated respectively to reduce the influence of sloshing on the coarse alignment. Secondly, the correlation filter is designed with the improved observability of the system under the condition of sloshing.The feasibility of this alignment scheme is verified by experiments.
2020,42(8): 157-161 收稿日期：2020-05-14
DOI：10.3404/j.issn.1672-7649.2020.08.029
分类号：U666.1
作者简介：芈小龙(1977-),男,工程师,从事舰船装备信息技术研究
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