基于线性最优控制的捷联惯导初始对准方法研究

Study on Initial Alignment of Strapdown Inertial Navigation System Based on Linear Optimum Control

文中提出一种基于线性最优控制理论的捷联惯导系统初始对准方法,并完成了理论分析、设计和仿真,结果表明该方法能够有效地完成捷联惯导系统的初始对准,相对于传统方法在满足对准精度的同时可以大大缩短对准的时间,即便是存在较大失准角(小于10°),仍可以在几秒钟内收敛。

An initial alignment method based on the linear optimum control theory was proposed, and a series of theoretical analysis, design and simulation were conducted. The results indicate that this method can effectively achieve the initial alignment of the strapdown inertial navigation system and the method can not only satisfy the alignment precision. but also greatly reduce the alignment time compared with the traditional method. Even if large misalignment angle （less than 10 degrees） exists, it can still converge within several seconds.