基于星敏感器的星座自主导航融合技术研究

为解决单纯基于星间观测的星座自主导航系统的基准秩亏问题,利用星敏感器间接敏感地平的导航方法提出了一种基于星敏感器的星座自主导航信息融合技术。该技术可以有效地将星光折射和星间观测两种方法结合起来,利用星光折射提供星座中成员卫星的绝对位置信息,给出星座的空间基准,再利用星间相对观测,约束星座的几何结构,提高星座的整体的导航精度。

Fusion technology for autonomous navigation of constellation based on star sensor

To solve the problem of rank-short of reference existing in autonomous navigation system of constellation based on inter-satellite measurement,the navigation method using star sensor to sense horizon indirectly is used.And a fusion technology for autonomous navigation of constellation based on star sensor is presented which combines these two methods effectively.In this technology,the space reference of constellation is obtained by using stellar refraction to provide absolute position information of all or partial satellites,and geometrical structure of constellation is constrained by using inter-satellite measurement,then the navigation precision of constellation is improved.