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A Strategy to Determine Whether to Use GPU for a Satellite Mission Scheduling Algorithm
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- Authors
- Soojeon LEE, Byoung-Sun LEE, Jaehoon KIM
- Issue Date
- 2012-02
- Citation
- Transactions of the Japan Society for Aeronautical and Space Sciences, v.55, no.3, pp.166-174
- ISSN
- 0549-3811
- Publisher
- 일본항공우주학회
- Language
- English
- Type
- Journal Article
- Abstract
- As the first Korean multi-mission geostationary satellite, Chollian was launched on June 27, 2010. Chollian is being successfully controlled using a satellite ground control system (SGCS) developed by ETRI. A mission planning subsystem (MPS) in SGCS gathers mission requests from users, performs complex mission scheduling, and generates a conflictfree mission schedule. In this paper, we provide an overview of the current mission scheduling algorithms of the Chollian satellite, select three representative constraint checking schemes among these algorithms, and implement new graphics processing unit (GPU)-based constraint checking schemes for the three representative schemes. We compare the performance of the GPU-based and CPU-based constraint checking schemes based on the size of the problem set and the time complexity of the problem. Finally, we suggest a strategy to determine whether or not to adopt GPU for a satellite mission scheduling algorithm. © 2012 The Japan Society for Aeronautical and Space Sciences.
- KSP Keywords
- GPU-based, Geostationary satellite, Graphic Processing Unit(GPU), Ground Control System, Mission scheduling, Multi-mission, Scheduling algorithm, Time Complexity, graphics processing, mission planning, satellite mission