International Journal of Aeronautical and Space Sciences

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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KOMPSAT-2 Fault and Recovery Management

  • Baek, Myung-Jin (Satellite System Department Korea Aerospace Research Institute) ;
  • Lee, Na-Young (Satellite System Department Korea Aerospace Research Institute) ;
  • Keum, Jung-Hoon (Satellite System Department Korea Aerospace Research Institute)
  • Published : 2002.11.30
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Abstract

In this paper, KOMPSAT-2 on-board fault and ground recovery management design is addressesed in terms of hardware and software components which provide failure detection and spacecraft safing for anomalies which threaten spacecraft survival. It also includes ground real time up-commanding operation to recover the system safely. KOMPSAT-2 spacecraft fault and recovery management is designed such that the subsequent system configuration due to system initialization is initiated and controlled by processors. This paper will show that KOMPSAT-2 has a new design feature of CPU SEU mitigation for the possible upsets in the processor CPUs as a part of on-board fault management design. Recovery management of processor switching has two different ways: gang switching and individual switching. This paper will show that the difficulties of using multiple-processor system can be managed by proper design implementation and flight operation.

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References

  1. Baek, M. Land Lee, J I., 2002, "On-board Management of Multiple Processor Spacecraft System," IEEE Transaction on Aerospace and Electronic Systems, submitted
  2. Korea Aerospace Research Institute, 2002, "KOMPSAT-2 Preliminary Fault Management Design," KOMPSAT-2 document
  3. Korea Aerospace Research Institute, 2001, "KOMPSAT-2 Spacecraft Bus Preliminary Design Audit", KOMPSAT-2 document
  4. Korea Aerospace Research Institute, 2001, "KOMPSAT-2 Preliminary Fault Management Design Report", KOMPSAT-2 design report
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