Systems Engineering and Electronics ›› 2020, Vol. 42 ›› Issue (10): 2356-2365.doi: 10.3969/j.issn.1001-506X.2020.10.26

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PS-GERT effectiveness evaluation model of GEO satellite communication constellation

Zhigeng FANG1(), Ruirui SHAO1,*(), Zhao WANG1(), Sifeng LIU1(), Weiqing YOU2(), Su GAO3()   

  1. 1. College of Economics and Management, Nanjing University of Aeronautics & Astronautics, Nanjing 211106, China
    2. National Cryptography Administration of Jiangsu Provinces, Nanjing 210008, China
    3. Institute of Telecommunication Satellite, China Academy of Space Technology Corporation, Beijing 100094, China
  • Received:2020-03-13 Online:2020-10-01 Published:2020-09-19
  • Contact: Ruirui SHAO E-mail:zhigengfang@163.com;1439421039@qq.com;wongshao@126.com;sfliu@nuaa.edu.cn;894572560@qq.com;su_gao06@163.com

Abstract:

The effectiveness evaluation of the satellite communication constellation can not only represent the communication capability of constellation, but also provide the basis for optimizing constellation structure. Based on the deep analysis of the constellation structure, the geostationary earth orbit (GEO) satellite communication network plus system (PS) based on the communication link is analyzed. With the help of the graphical evaluation and review technique (GERT), an equivalent transfer function algorithm based on the characteristic function and transfer probability is proposed. Firstly, on the basis of analyzing the connotation of communication link importance, the algorithm formula of communication link effectiveness and its importance is obtained, and the GEO satellite constellation PS-GERT effectiveness evaluation model is constructed. Then, the probability density function of constellation efficiency is derived by inverse Fourier transform. Finally, the analysis of a GEO satellite communication constellation is taken as an example to verify the superiority of the model constructed. It can not only comprehensively and objectively evaluate the effectiveness of the constellation, but also lay a theoretical foundation for the optimization of the constellation structure.

Key words: communication link, link effectiveness, graphical evaluation and review technique (GERT), importance, plus system (PS), effectiveness evaluation

CLC Number: 

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