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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2020, Vol. 41 ›› Issue (4): 323546-323546.doi: 10.7527/S1000-6893.2019.23546

• Electronics and Electrical Engineering and Control • Previous Articles     Next Articles

Topological generation and optimization method in multi-state space information network

PAN Chengsheng1,2, XING Guixuan1,2, QI Yaowen3, YANG Li1,2   

  1. 1. College of Information Engineering, Dalian University, Dalian 116622, China;
    2. Communication and Networks Laboratory, Dalian University, Dalian 116622, China;
    3. School of Automation, Nanjing University of Science and Technology, Nanjing 210094, China
  • Received:2019-10-08 Revised:2019-12-23 Online:2020-04-15 Published:2019-12-19
  • Supported by:
    National Natural Science Foundation of China (61931004,61901080); Natural Foundation Guidance Plan of Liaoning Province(2019-ZD-0312)

Abstract: The topological generation and optimization of Space Information Network (SIN) in multi-state is studied based on the high dynamicity in SIN, the multi-state characteristics of satellites, and the requirements of communication time-delay and topological invulnerability. According to the periodicity of satellite constellation, a periodic table of satellite constellation topologies is established. Considering the constraints of satellite visibility and connectivity degree, a multi-objective optimization model of network topology is set up, with network average and maximal delay as optimization targets. An Improved Multi-Objective Simulated Annealing (IMOSA) algorithm is proposed and used for solving the structure of global optimization topology. Considering the multi-state characteristics, the time-delay of topology is optimized to satisfy the high dynamicity. The final simulation based on the Iridium Constellation with 66 Low Earth Orbit (LEO) satellites in multi-state situation shows that, the algorithm can maximize the decreasing of communication delay and obtain favorable invulnerability topology structures. Compared with the previous static typology, the communication ability of topology generated by the algorithm improved significantly.

Key words: space information network, network topology, multi-objective optimization, node multi-state, multi-objective simulated annealing algorithm

CLC Number: