适用于捷联惯性/星光组合导航的导航星表构建方法

构建满足完备性、精简性和查询快速性的导航星表是实现捷联惯性/星光组合导航系统的重要前提和保证。为了达到这一目标，本文选取天文学中的Tycho-2星表作为导航星表的初始星表，它与TRC星表相比具有明显的优势，在实践运用过程中更加完备。在Tycho-2星表基础上，对球矩形分区方法进行了改进，包括明确了分区及子分区的划分方法，提出了备选导航星的选择策略。实验结果表明，采用改进型球矩形分区方法的备选导航星数量最多只占赤纬带法导航星的19.39%，仅占全天遍历法导航星的3.12%。因此，改进型球矩形分区方法更加精准，查询更快捷，更适用于SINS/CNS组合导航系统。

Study on construction method of guide star catalog suitable for SINS/CNS integrated navigation system

To build a guide star catalog which is completeness, simplicity and query rapidity is an important prerequisite and guarantee to meet strapdown inertial navigation system/celestial navigation system. In order to achieve this goal, the Tycho-2 catalog is selected as the initial catalog of the guide star catalog. Compared with the TRC catalog, the Tycho-2 catalog has obvious advantages. In the practical application process, the Tycho-2 catalog is more perfect. And based on the Tycho-2 catalog, the improved ball rectangle partition method is suggested. It includes how to divide the partition and the sub partition. The selection strategy of the alternative guide star is also creatively proposed. The experimental results show that, using the improved ball rectangle partition method, the alternative guide star number most accounts for 19.39% of the guide star using for the declination zone method. More over only accounts for 3.12% of the guide star using for the traverse method. Therefore it is more accurate and query more quickly, this method is more suitable for the demand of SINS/CNS integrated navigation system.