视场内导航星分布的预测

给出理想情况下场内航星分布模型的基础上，根据敏感器的星等门限和测量精度进一步实现了存在星等误差情况下导航星分布的预测，使得该模型为接近真实的情况。实验表明，采用该模型获得的分布与用ＭｏｎｔｅＣａｒｌｏ方法获得的统计分布极为接近，证明了该模型的正确性和有效性。

THE PREDICTION OF GUIDE STARS IN THE FIELD OF VIEW

The distribution of guide stars in the field of view (FOV), especially in case of considering the magnitude error, gives an important influence to the design of optical system of star tracker, the selection of guide stars and the star field recognition algorithm itself. In this paper, the distribution of guide stars in ideal cases is described and based on the threshold of magnitude and measured uncertainty, the prediction of distribution in case of considering the magnitude error is derived. A Monte Carlo experiment demonstrates that the statistical result is well coincided with the prediction by using above mentioned method.