The authors describe an approach to guarded software upgrading through scenario-based descriptions. Their objectives are to avoid or minimize the unavailability and performance loss of spacecraft/science functions due to software upgrading activities and due to system failure caused by residual faults in an upgraded version. The approach emphasizes: 1) the utilization of nondedicated or inherent system resource redundancies such as an earlier software version and a processor that otherwise would be idle in the mission phase during which software upgrading activities are conducted, and 2) the low-cost efficient error containment and protection mechanisms based on adaptation/extension of the enabling technologies such as checkpointing and message logging.


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    Titel :

    On-board guarded software upgrading for space missions


    Beteiligte:
    Thi, A.T. (Autor:in) / Tso, K.S. (Autor:in) / Alkalai, L. (Autor:in) / Chau, S.N. (Autor:in) / Sanders, W.H. (Autor:in)


    Erscheinungsdatum :

    01.01.1999


    Format / Umfang :

    651294 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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