TY - JOUR
T1 - 基于多级库存管理理论的导航星座可用性研究
AU - Zhao, Lingfeng
AU - Huang, Chaowei
AU - Lin, Ruoyu
AU - Huang, Shasha
AU - Xue, Xiaofeng
AU - Feng, Yunwen
N1 - Publisher Copyright:
©2025 Journal of Northwestern Polytechnical University.
PY - 2025/4
Y1 - 2025/4
N2 - In view of the problems existing in the current research on backup strategies for constellations, such as the single method and the neglect of short-term satellite failures, as well as the insufficient in-depth study of backup strategies using Markov theory, this paper proposes a constellation availability research method based on multi-level inventory management theory and considering constellation status. Firstly, a mathematical model of constellation backup strategy is established with the guarantee rate of backup satellites as the index. Then, based on Markov theory, a mathematical model of constellation service availability is further established by combining the availability of individual satellites and the probability of constellation status. Finally, a case analysis and comparison are conducted using a certain navigation constellation as an example. According to the calculation results of the model, the changes in the probability of constellation failure status are explored; the influence of the deployment position, replenishment timing, and increase in the number of backup satellites on improving constellation service availability is given; and it is verified that the impact of short-term failures on constellation availability is similar to that of long-term failures and cannot be ignored in engineering applications.
AB - In view of the problems existing in the current research on backup strategies for constellations, such as the single method and the neglect of short-term satellite failures, as well as the insufficient in-depth study of backup strategies using Markov theory, this paper proposes a constellation availability research method based on multi-level inventory management theory and considering constellation status. Firstly, a mathematical model of constellation backup strategy is established with the guarantee rate of backup satellites as the index. Then, based on Markov theory, a mathematical model of constellation service availability is further established by combining the availability of individual satellites and the probability of constellation status. Finally, a case analysis and comparison are conducted using a certain navigation constellation as an example. According to the calculation results of the model, the changes in the probability of constellation failure status are explored; the influence of the deployment position, replenishment timing, and increase in the number of backup satellites on improving constellation service availability is given; and it is verified that the impact of short-term failures on constellation availability is similar to that of long-term failures and cannot be ignored in engineering applications.
KW - backup strategy
KW - constellation availability
KW - Markov process
KW - multi-echelon technique for recoverable item control theory
KW - Petri net
KW - satellite constellation
UR - http://www.scopus.com/inward/record.url?scp=105005848045&partnerID=8YFLogxK
U2 - 10.1051/jnwpu/20254320222
DO - 10.1051/jnwpu/20254320222
M3 - 文章
AN - SCOPUS:105005848045
SN - 1000-2758
VL - 43
SP - 222
EP - 232
JO - Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University
JF - Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University
IS - 2
ER -