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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    Title :

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


    Contributors:

    Published in:

    Publication date :

    2021-01-01




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English