TY - JOUR
T1 - 基 于 马 尔 科 夫 决 策 过 程 的 星 座 故 障 卫 星替 换 策 略 研 究
AU - Lin, Ruoyu
AU - Feng, Yunwen
AU - Xue, Xiaofeng
AU - Zheng, Xiaoyan
AU - Cui, Shuai
N1 - Publisher Copyright:
© 2025 Editorial Department of Advances in Aeronautical Science and Engineering. All rights reserved.
PY - 2025/4
Y1 - 2025/4
N2 - With the decrease of the importance of single satellite caused by the large-scale constellation,multiple re⁃ placement methods and the retention of faulty satellites should be considered when formulating the replacement strategy of faulty satellites. In response to this requirement,a method of formulating constellation orbital satellite re⁃ placement strategy based on Markov decision process is proposed. The orbital states are divided to the number of sat⁃ ellites in orbit,on-orbit backup and ground backup. On this basis,a return function model representing the expected maintenance cost is constructed by combining different replacement methods of faulty satellites and corresponding or⁃ dering,storage and penalty costs. Sequential replacement strategies are formulated with the goal of minimizing the ex⁃ pected maintenance cost of each decision-making cycle and an application analysis is carried out taking a certain con⁃ stellation orbit as an example. The results show that when ground backup satellites are used to replace faulty satel⁃ lites,it tends to supplement the consumed. The longer the mean time between failures,the lower the total expected maintenance cost,but the effect is gradually weakened. The increase of penalty cost will lead to the solidification of strategies,and the upward trend of total maintenance cost is expected to be greatly slowed down.
AB - With the decrease of the importance of single satellite caused by the large-scale constellation,multiple re⁃ placement methods and the retention of faulty satellites should be considered when formulating the replacement strategy of faulty satellites. In response to this requirement,a method of formulating constellation orbital satellite re⁃ placement strategy based on Markov decision process is proposed. The orbital states are divided to the number of sat⁃ ellites in orbit,on-orbit backup and ground backup. On this basis,a return function model representing the expected maintenance cost is constructed by combining different replacement methods of faulty satellites and corresponding or⁃ dering,storage and penalty costs. Sequential replacement strategies are formulated with the goal of minimizing the ex⁃ pected maintenance cost of each decision-making cycle and an application analysis is carried out taking a certain con⁃ stellation orbit as an example. The results show that when ground backup satellites are used to replace faulty satel⁃ lites,it tends to supplement the consumed. The longer the mean time between failures,the lower the total expected maintenance cost,but the effect is gradually weakened. The increase of penalty cost will lead to the solidification of strategies,and the upward trend of total maintenance cost is expected to be greatly slowed down.
KW - backup strategy
KW - maintenance cost
KW - Markov decision process
KW - replacement method
KW - satellite constellation
UR - http://www.scopus.com/inward/record.url?scp=105005578615&partnerID=8YFLogxK
U2 - 10.16615/j.cnki.1674-8190.2025.02.07
DO - 10.16615/j.cnki.1674-8190.2025.02.07
M3 - 文章
AN - SCOPUS:105005578615
SN - 1674-8190
VL - 16
SP - 62
EP - 69
JO - Advances in Aeronautical Science and Engineering
JF - Advances in Aeronautical Science and Engineering
IS - 2
ER -