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Optimal Parameter Design of Coarse Alignment for Fiber Optic Gyro Inertial Navigation System

机译:光纤陀螺惯性导航系统粗对准最佳参数设计

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摘要

Two different coarse alignment algorithms for Fiber Optic Gyro (FOG) Inertial Navigation System (INS) based on inertial reference frame are discussed in this paper. Both of them are based on gravity vector integration, therefore, the performance of these algorithms is determined by integration time. In previous works, integration time is selected by experience. In order to give a criterion for the selection process, and make the selection of the integration time more accurate, optimal parameter design of these algorithms for FOG INS is performed in this paper. The design process is accomplished based on the analysis of the error characteristics of these two coarse alignment algorithms. Moreover, this analysis and optimal parameter design allow us to make an adequate selection of the most accurate algorithm for FOG INS according to the actual operational conditions. The analysis and simulation results show that the parameter provided by this work is the optimal value, and indicate that in different operational conditions, the coarse alignment algorithms adopted for FOG INS are different in order to achieve better performance. Lastly, the experiment results validate the effectiveness of the proposed algorithm.
机译:本文讨论了基于惯性参考系的两种不同的光纤陀螺惯性导航系统(INS)粗对准算法。它们都基于重力矢量积分,因此,这些算法的性能取决于积分时间。在以前的作品中,集成时间是根据经验选择的。为了给选择过程提供一个标准,使积分时间的选择更加准确,本文对这些算法进行了最优的参数设计。设计过程是基于对这两种粗对准算法的误差特征的分析而完成的。此外,这种分析和最佳的参数设计使我们能够根据实际操作条件对FOG INS进行最准确的算法选择。分析和仿真结果表明,这项工作提供的参数是最优值,并且表明在不同的工作条件下,FOG INS所采用的粗对准算法是不同的,以实现更好的性能。最后,实验结果验证了该算法的有效性。

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