论文部分内容阅读
进行导航星座长期自主定轨物理实验研究不仅难度大,周期长,而且成本昂贵。为更好的评估基于星间定向观测信息的导航星座长期自主定轨方案,利用星模拟器及星敏感器设计了基于星间定向观测信息的导航星座长期自主定轨半物理仿真系统。与单纯数值仿真相比,更为准确和可靠地模拟了星间定向观测信息及其误差特性,可以对基于星间定向观测信息的导航星座长期自主定轨方案进行更加真实有效的评估。最后利用本系统对基于传统EKF滤波算法的导航星座长期自主定轨方案进行了仿真验证。
Conducting long-term autonomous orbit determination of navigation constellations is not only difficult, long period, but also costly. In order to better evaluate the long-term autonomous orbit determination of a navigation constellation based on the information of inter-satellite directional observation, a long-term autonomous orbit semi-physical simulation system of navigation constellation based on the information of inter-satellite directional observation is designed by using the star simulator and the star sensor. Compared with the simple numerical simulation, the more accurate and reliable simulation of the information of the inter-satellite directional observation and its error characteristics can make a more realistic and effective assessment of the long-term autonomous orbit determination of the navigation constellation based on the information of the inter-satellite directional observation. Finally, this system is used to simulate long-term autonomous orbit determination of navigation constellation based on traditional EKF filtering algorithm.