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A Concept for improving the Level of Autonomy of an LEO Satellite  

Jeon, Moon-Jin (다목적실용위성3A호체계팀)
Kim, Eunghyun (다목적실용위성3A호체계팀)
Lim, Seong-Bin (다목적실용위성3A호체계팀)
Publication Information
Aerospace Engineering and Technology / v.13, no.1, 2014 , pp. 37-43 More about this Journal
Abstract
The ground station which operates the LEO satellite performs monitoring state of health of the satellite, sending the commands for the imaging mission of receiving the images during about 10 minutes of contact time. To finish the planned procedure in limited contact time, specific level of autonomy is applied in the satellite and the ground system. For example, the attitude and orbit control logic has high level of autonomy because it must be operated alone for long period without operator intervention. On the other hand, the fault management logic has relatively low level of autonomy because of that failure detection and safing operation are performed on-board, whereas failure identification and recovery are on-ground operation. The level of autonomy of the satellite affects also the ground operation. The command set for mission operation is generated by ground system. If the satellite has higher level of autonomy, some of operation currently done on-ground can be performed on-board, so the ground operation can be simplified. In this paper, we discuss the level of autonomy and propose a concept for improving the level of autonomy of an LEO satellite.
Keywords
satellite; autonomy; safety; level of autonomy;
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