Chip scale atomic clocks (CSACs) have the potential to provide CubeSat missions with precision timekeeping capabilities to support onboard radiometric tracking, reducing dependence on ground support. This work considers a baseline orbit determination (OD) scenario for a low-Earth-orbit CubeSat, with one-way radiometric measurements made onboard using a CSAC as the timing reference. Methods for simulating and estimating a stochastic CSAC signature and a temperature-induced frequency variation are presented. Navigation and clock estimation performance are analyzed for both stochastic-only and thermally influenced CSAC signature cases. The models and methods can be extended to other orbital regimes and CubeSat applications requiring precise onboard timing.


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    Titel :

    Chip Scale Atomic Clock–Driven One-Way Radiometric Tracking for Low-Earth-Orbit CubeSat Navigation


    Beteiligte:
    Rybak, Margaret M. (Autor:in) / Axelrad, Penina (Autor:in) / Seubert, Jill (Autor:in) / Ely, Todd (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2020-10-28


    Format / Umfang :

    10 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch