卫星导航系统星间链路发展的关键影响因素分析

Analysis of the Key Factors That Influence the Development of GNSS ISLs

建设有星间链路支持的导航星座已经成为新一代卫星导航系统的发展趋势之一。各国发展卫星导航系统的战略意图、综合国力、技术水平、国土分布等情况不同,导致导航系统对星间链路有不同的需求和约束,各系统发展论证的星间链路技术方案也各有不同。通过梳理国外卫星导航系统星间链路的发展论证过程,归纳出国外建设卫星导航系统星间链路考虑的3个共性关键因素:需求、技术与经济,并分析了以上因素对星间链路发展的影响。

The construction of navigation constellation with inter-satellite links has become one of the development trends for next generation of satellite navigation system.In different countries,strategic intention of satellite navigation system,comprehensive national strength,technology level,geographical layout and some other aspects are different,which cause different requirements and constraints of the navigation system on the inter-satellite links.By sorting the development demonstration process of inter-satellite links of overseas satellite navigation systems,the paper induces three common key factors to be considered in overseas construction of inter-satellite links：demand,technology and economy and analyzes the influence of above factors on the development of the links.