天文导航方向，导航信号转化为星历表信息Matlab程序。-The direction of celestial navigation, navigation signal into Matlab ephemeris information procedures.

观测星表的制备，通过对第谷星表的筛选，选出合适的星体，是星敏感器的重要组成部分，适合刚刚接触的人很快进入状态-Preparation observation catalog, through the screening of Tycho catalog, choose the right stars, is an important part of the star sensor, for just contact people quickly enter the state