This chapter describes the main functionalities and architecture of the Flight Dynamics Facility (FDF) and outlines its most relevant interfaces to the other ground segment components. One of the main tasks of the FDF is the regular orbit determination based on the radiometric and meteorological tracking data from the TT&C station network. Based on the computed orbit information, derived products like the pointing files are computed, which are an essential input for the TT&C stations to establish future contacts. The onboard orbit propagator updates are another important product that needs to be derived from the most recent orbit knowledge. Orbit propagation allows to predict the future orbit development and is the basis to calculate upcoming orbit events like eclipses, node crossing, or sensor FoV crossings required by mission planning. Longer term orbit predictions are an important means to detect potential future violations of orbit station keeping requirements which require the manoeuvre planning functionality to provide an adequate orbit correction strategy. Once the necessary orbit change is determined, the satellite platform specific command parameters need to be computed and provided to the spacecraft control facility (SCF) for uplink to the satellite. Manoeuvre planning, execution, and calibration is also an essential task during the LEOP phase in order to bring the satellite from its launcher injection point to its foreseen operational orbit location. Due to the significant increase of the space debris population during the past decades, the regular monitoring of potential orbit collisions and a realistic risk estimation is another important flight dynamics task. In addition to the functional description, this chapter also provides some insight into the underlying mathematical algorithms and techniques. The focus here is given to the areas of orbit propagation, orbit determination, manoeuvre planning, command parameter computation, fuel mass estimation, and collision risk monitoring.


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    Titel :

    The Flight Dynamics Facility


    Weitere Titelangaben:

    Space Technology Library


    Beteiligte:
    Nejad, Bobby (Autor:in)


    Erscheinungsdatum :

    2022-08-24


    Format / Umfang :

    25 pages





    Medientyp :

    Aufsatz/Kapitel (Buch)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch