Chinese Space Science and Technology ›› 2021, Vol. 41 ›› Issue (4): 95-101.doi: 10.16708/j.cnki.1000-758X.2021.0055

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Research on on-orbit construction reconfiguration method of LEO communication constellation based on fuel consumption balance

  

  1. 1 63723 Troops of the PLA, Xinzhou 036300, China
    2 Space Engineering University, Beijing 101416, China
    3 32024 Troops of the PLA, Beijing 100000, China
  • Published:2021-08-25 Online:2021-07-30

Abstract: Aiming at the problem of onorbit reconstruction of low earth orbit (LEO) communication constellations, the characteristics of LEO communication constellations were analyzed, and four reconstruction indicators were proposed, namely global average coverage, fuel consumption balance, total reconstruction time and total reconstruction velocity increment. And then the reconstruction method to increase the orbit height was analyzed. The reconstruction was modeled and analyzed using the multi-objective evolutionary algorithm based on decomposition (MOEA/D). The results show that the model optimization results can obtain multiple sets of optimal solutions to form a Pareto front, and obtain a solution with the optimal fuel consumption balance. The total reconstruction time for the two failure modes is 3.6×105s, the variance of the velocity increment is 261.4m2/s2 and 293.4m2/s2. These solutions can restore the original coverage performance of the constellation and make the fuel consumption the most balanced.

Key words: LEO, communication constellation, on-orbit reconfiguration, fuel consumption balance, multi-objective