CubeSat Mission Scheduling Method Considering Operational Reliability

Jingjing Zhang (), Chenyang He, Yan Zhang, Xianjun Qi and Xi Yang
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Jingjing Zhang: School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China
Chenyang He: School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China
Yan Zhang: Key Lab of Aperture Array and Space Application, Hefei 230088, China
Xianjun Qi: School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China
Xi Yang: School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China

Energies, 2024, vol. 17, issue 2, 1-16

Abstract: Mission scheduling is an effective method to increase the value of satellite missions and can greatly improve satellite resource management and quality of service. Based on the priority-based task scheduling model, this paper proposes a CubeSat scheduling method that takes operational reliability into account, considering the impact of scheduling results on reliable operation. In this method, the available energy and the time window are used as scheduling resources, and the average state of charge of the lithium battery and the number of task start-ups are defined as two indices to measure its reliability. To meet the mission requirements and energy availability of photovoltaic (PV) solar panel and battery constraints, the scheduling model is constructed with an objective function that includes mission priority and reliability index. The branch and bound (BB) method and analytical hierarchy process (AHP) method are used to solve the scheduling problem. The example analysis compares different scheduling results and verifies the effectiveness of the proposed scheduling method. Compared with the existing methods, it comprehensively considers the mission value and operational reliability of the CubeSat, improves the energy reserve level of the CubeSat, and reduces the surge current caused by the start-up of tasks.

Keywords: CubeSat; operational reliability; mission scheduling model; BB method; optimization (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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