Telecommunications Science ›› 2022, Vol. 38 ›› Issue (4): 30-38.doi: 10.11959/j.issn.1000-0801.2022076

• Topic: Satellite Network • Previous Articles     Next Articles

Research on a routing task planning algorithm for LEO remote sensing constellation

Xing QI, Zhen LIU, Jiahui LIANG, Qiming ZHAO, Chang LIU   

  1. The Third Institute of China Aerospace Science and Industry Corporation (CASIC) Hiwing Satellite Operation Division, Beijing 100071, China
  • Revised:2022-04-10 Online:2022-04-20 Published:2022-04-01


In order to solve the problem of poor timeliness of data transmission in remote sensing constellation, the inter-satellite link network and a routing task planning algorithm suitable for inter-satellite network with intermittent burst characteristics was proposed.Driven by the results of remote sensing satellite imaging task planning, combined with the time-varying characteristics of satellite network topology, the algorithm improved the topology division method based on snapshot sequence to reduce the frequency of route switching and the cost of link switching.The routing between satellite and ground station was regarded as a part of the routing of LEO remote sensing constellation.While selecting the shortest routing path between satellite and the ground, the duration of satellite-ground link was maximized.The simulation results show that the algorithm can significantly improve the data transmission capability of the low-orbit remote sensing satellite constellation.

Key words: LEO satellite space network, remote sensing constellation, routing task planning algorithm

CLC Number: 

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