中国空间科学技术

中国空间科学技术 ›› 2022, Vol. 42 ›› Issue (4): 19-26.doi: 10.16708/j.cnki.1000-758X.2022.0048

• 论文 • 上一篇    下一篇

高中低轨导航星座混合体制星间链路规划

田露，马冬青，孙剑伟*，李骏平   

  1. 中国电子科技集团公司第十五研究所，北京100083
  • 出版日期:2022-08-25 发布日期:2022-08-09

Inter satellite link planning of high middle low orbit hybrid constellation

TIAN Lu，MA Dongqing，SUN Jianwei*，LI Junping   

  1. The 15th Research Institute of China Electronics Technology Group Corporation，Beijing 100083，China
  • Published:2022-08-25 Online:2022-08-09

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摘要： 针对北斗系统加入低轨增强星座后的高中低混合星座特点，为了满足下一代导航星座主要的星间链路业务需求，提出了一种分级规划的混合星座星间链路规划方案。优先为激光星间链路的MEO、LEO、MEO-LEO建立拓扑，基于此拓扑提出了时分体制的分组拓扑规划算法。针对导航星座高中低速混合星间网络不同体制的路由提出了2种不同的改进路由算法，并对混合体制星间链路进行了仿真和规划。对规划结果进行了统计分析，验证了混合网络规划方法的正确性和混合网络在低轨监测数据回传、层间数据传输、导航信息上注3个典型导航业务场景的数据传输效能。低轨监测数据回传和连续体制节点导航信息上注时延均在1s之内，在94%的时间里有5~8条层间星间链路，时分体制节点在92%的时间里可以在12s内完成上行注入，为下一代导航系统规划设计提供参考建议。

关键词: 导航星座, 低轨增强, 激光星间链路, 拓扑规划, 路由算法

Abstract: According to the characteristics of mixed constellation of BeiDou system after adding LEO enhanced constellation，in order to meet the major inter satellite link business requirements of the next generation navigation constellation，a hierarchical planning scheme for inter satellite link planning of hybrid constellation was proposed，and priority was given to the establishment of topology for MEO，LEO and MEO LEO of laser inter satellite link.A grouping topology planning algorithm for TDMA was proposed based on the topology，and two improved routing algorithms were proposed for hybrid inter satellite networks in navigation constellation.Simulation and planning of the hybrid system inter satellite link were carried out，the correctness of the hybrid network planning method was proved，and the data transmission efficiency of the hybrid network in three typical navigation business scenarios of LEO monitoring data backhaul，inter layer data transmission and navigation information injection was verified.The results show that the delay of LEO monitoring data backhaul and continuous system node navigation information injection is less than 1s.There are 5～8 inter layer intersatellite links for 94% of the time，and the TDMA node can complete the navigation information injection in 12s for 92% of the time，which provides reference for the planning and design of the next generation navigation system.

Key words: navigation constellation, augmentation based on LEO, laser inter satellite link, topology planning, routing algorithm