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On-board and Ground Autonomous Operation Methods of a Low Earth Orbit Satellite for the Safety Enhancement  

Yang, Seung-Eun (한국항공우주연구원 위성기술연구단 위성비행소프트웨어팀)
Publication Information
Journal of Satellite, Information and Communications / v.11, no.3, 2016 , pp. 51-57 More about this Journal
Abstract
Many kinds of telemetry should be monitored to check the state of spacecraft and it leads the time consumption. However, it is very important to define the status of satellite in short time because the contact number and time of low earth orbit satellite is limited. Also, on-board fault management should be prepared for non-contact operation because of the sever space environment. In this paper, on-board and ground autonomous operation method for the safety enhancement is described. Immediate fault detection and response is possible in ground by explicit anomaly detection through satellite event and error information. Also, satellite operation assistant system is proposed for ground autonomy that collect event sequence in accordance with related telemetry and recommend or execute an appropriate action for abnormal state. Critical parameter monitoring method with checking rate, mode and threshold is developed for on-board autonomous fault management. If the value exceeds the limit, pre-defined command sequence is executed.
Keywords
low earth orbit satellite; state monitoring. event; on-board autonomy; fault management;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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