Chinese Space Science and Technology ›› 2018, Vol. 38 ›› Issue (2): 9-15.doi: 10.16708/j.cnki.1000-758X.2018.0002

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Routing optimization method for fast return of data on overseas satellites in Beidou Global Navigation Satellite System

GAO He1,WANG Ling1,HUANG Wende2,3,*,SUN Leyuan2   

  1. 1. College of Electrical and Information Engineering, Hunan University, Changsha 410073, China
    2. College of Mechatronics Engineering and Automation, National University of Defense Technology, Changsha 410073, China
    3. Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, China
  • Received:2017-07-05 Accepted:2018-01-15 Online:2018-03-25 Published:2020-02-11
  • Contact: 黄文德(1981-),男,博士,讲师,博士后,,研究方向为航天器轨道动力学、导航星座自主运行及卫星导航系统级测试与评估技术

Abstract: In order to solve the problem of the lack of station in Beidou Global Navigation Satellite System, a route optimization method was proposed to quickly transmit the overseas satellite data to the domestic satellite by using the inter-satellite link. Firstly, the problem of fast data transmission in the case of limited number of ground stations was described, and the optimization objective, rules and constraints of data transmission routing were defined. Then, based on the genetic algorithm, the routing optimization method and the minimum data transmission scheme were proposed. Finally, the validity of the algorithm was verified. The results show data transmission is completed within 2 skips (6 seconds) in the Beidou system constellation with two domestic station conditions. This optimized result can meet the requirements of overseas data fast transmit.

Key words: Beidou Global Navigation Satellite System, inter-satellite link, data transmission, routing planning, genetic algorithm