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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2022, Vol. 43 ›› Issue (9): 326114-326114.doi: 10.7527/S1000-6893.2021.26114

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

Multi-objective optimization method oriented to integrated scenario of TT & C resources and data transmission resources

SUN Gang, PENG Shuang, CHEN Hao, WU Jiangjiang, LI Jun   

  1. College of Electronic Science and Technology, National University of Defense Technology, Changsha 410073, China
  • Received:2021-07-16 Revised:2021-08-19 Online:2022-09-15 Published:2021-09-22
  • Supported by:
    National Natural Science Foundation of China (61806211, U19A2058, 62106276); Natural Science Foundation of Hunan Province (2020JJ4103)

Abstract: With the development of the electronic technology in recent years, TT&C resources and data transmission resources in satellite ground stations are gradually converging, showing the characteristic of functional integration. Making full use of this feature can effectively improve the utilization rate of satellite ground station resources and alleviate the problem of satellite ground station resource shortage in satellite-to-ground communications. In view of the characteristics of the problem and actual requirements, a constraint satisfaction model is established with the optimization objectives of minimizing task-conflict time, maximizing load-balance degree, and maximizing task-clustering degree. A satellite range scheduling method named KG-NSGA-II-TTC&DT is proposedfor the integrated scenario of TT&C resources and data transmission resources. The load-balance operator, task-clustering operator, and conflict-resolution operator based on iterative repair are designed in the algorithm. The knee point is also used to guide the process of the algorithm, which effectively improves the optimization and pertinence. Experimental results show that compared with the NSGA-II-TTC&DT, the KG-NSGA-II-TTC&DT achieves an average performance improvement of 16.75% in the Generation Distance (GD) indicator, and an improvement of 6.67%, 9.28% and 1.87% in the three optimization objectives of minimizing task conflict time, maximizing load-balance degree, and maximizing task clustering degree, respectively. The contribution rate of the load-balance operator, task clustering operator, and conflict resolution operator based on iterative repair is 31.50%, 15.60%, and 70.57%, respectively.

Key words: integration of TT&C resources and data transmission resources, satellite range scheduling, multi-objective optimization, evolutionary algorithm, knee point

CLC Number: