The Mars Express (MEX) spacecraft has been orbiting Mars since 2004. The operators need to constantly monitor its behavior and handle sporadic deviations (outliers) from the expected patterns of measurements of quantities that the satellite is sending to Earth. In this paper, we analyze the patterns of the electrical power consumption of MEX’s thermal subsystem, that maintains the spacecraft’s temperature at the desired level. The consumption is not constant, but should be roughly periodic in the short term, with the period that corresponds to one orbit around Mars. By using long short-term memory neural networks, we show that the consumption pattern is more irregular than expected, and successfully detect such irregularities, opening possibility for automatic outlier detection on MEX in the future.


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    Titel :

    Discovering outliers in the Mars Express thermal power consumption patterns


    Beteiligte:
    Petkovic, Matej (Autor:in) / Lucas, Luke (Autor:in) / Stepisnik, Tomaz (Autor:in) / Panov, Pance (Autor:in) / Simidjievski, Nikola (Autor:in) / Kocev, Dragi (Autor:in)


    Erscheinungsdatum :

    01.07.2021


    Format / Umfang :

    4322110 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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