基于速度阻尼的天文／惯性组合导航技术研究

简要介绍了天文／惯性组合导航系统的基本原理，采用速度阻尼技术阻尼惯性导航系统的舒拉周期误差，为天文导航系统提供高精度的姿态信息，从而利用天文导航信息估计补偿惯性导航系统的陀螺漂移，同时，速度阻尼克服了天文导航不能估计补偿加速度计误差的缺点，使天文／惯性组合导航的各种误差得到补偿修正，解决了天文／惯性组合导航长航时导航条件下导航精度不高的问题；对研制的天文／惯性组合导航系统远洋航行的数据进行半物理仿真，仿真分析结果表明：基于速度阻尼的天文／惯性组合导航技术可以实现天文／惯性组合导航系统的长航时高精度组合导航。

Study of CNS/INS Integrated Navigation System Based on Speed Damping hechnology

The basic principles of the CNS/INS integrated navigation system are introduced briefly in this paper.The speed damping technology(SDT) which constrains Shula period error of the INS is used for providing attitude infor-mation for the CNS,thus the CNS information can be used for compensating the Gyros drift.Meanwhile,the SDT overcomes the difficulties of compensating the accelerations drift by the CNS,which compensates all errors of the CNS/INS integrated navigation system.The semi-physical simulation of the CNS/INS integrated navigation system in long-term range is described,the simulation results indicate that the SDT is applied to the CNS/INS integrated system for long-term range and high-precision requirements.