航空天文导航系统定位误差因素研究

研究了影响航空天文导航系统定位精度的四个因素，包括轴系制造装调与标校精度、导航星视位置精度、蒙气差修正精度和CCD光电测量精度。首先分别对这四个因素进行了理论分析，在论述轴系制造装调与标校精度的过程中，首次考虑了天文导航设备与外部设备之间的坐标轴系标定问题，并提出了利用对角位移敏感的光学测量技术来完成天文导航设备与外部设备之间的坐标轴系标定，对工程实践具有指导意义。

Position Error Factors of Aeronautic Celestial Navigation System

Four elements that have effect on position accuracy of aeronautic celestial navigation system are proposed in this paper, such as shafting manufacture alignment and caliberation accuracy, navigation star apparent position accuracy, refrac- tion correction accuracy and CCD photoelectric star precision. At first, these four elements are analyzed in theory. In the course of discussing the manufacture, assembly and calibration of coordinate（s）, for the first time the coordinates calibration between celestial navigation equipment and outer equipment is taken into count. Optical measure technique that is sensitive to angle displacement is put forward to accomplish the coordinates calibration between celestial navigation equipment and outer equipment.