非线性滤波及其在航天器天文导航中的应用

The Application of No-linear Filteringin Spacecraft Star Navigation System

对天文导航系统构成、模型的建立、非线性滤波方法做了初步的仿真研究。系统的测量值由星光跟踪器和红外高度测量仪提供。星光跟踪仪提供天顶距的测量数据，红外高度测量仪提供航天器的高度数据。通过非线性滤波方法估计出系统状态，实现对航天器导航的任务。

In this paper , some simulation results about the modelling of space- craft star navigation system are provided. The measurements of the spacecraft star nav- igation system are provided by star tracker and infrared accelerometer. The task of the spacecraft can be finished with the estimated states using no - linear filtering.