The GPS Block IIR rubidium clocks have proved to be the best performers in the current GPS constellation, starting with the first IIR operational clock (launched on July 23, 1997). This discussion covers a number of topics, including the frequency accuracy, the frequency variation, and the projected lifetimes of these clocks. The performance of these clocks in orbit and their life expectancy are compared with that experienced with previous GPS clocks. The superior performance and lifetimes of the GPS IIR Rb clocks are highlighted. Because these clocks are so well behaved, it has been possible to detect various features and phenomena that were not previously detectable. The full drift of the IIR clocks is not observed by the user because of onboard cancellation by the Time Keeping System. The diagnostic and reprogrammability capability of the GPS IIR Satellites allows these discrepancies to be addressed. The long-lived features of the clocks indicate that they will outlive the GPS satellite mission duration.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    GPS IIR Rubidium Clocks: In-Orbit Performance Aspects


    Beteiligte:
    M. Epstein (Autor:in) / G. Freed (Autor:in) / J. Rajan (Autor:in)

    Erscheinungsdatum :

    2004


    Format / Umfang :

    19 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch





    Stability Test Results for GPS Rubidium Clocks

    F. Danzy / W. Riley | NTIS | 1987


    In-Orbit Performance Assessment of Giove Clocks

    P. Waller / F. Gonzalez / J. Hahn et al. | NTIS | 2008


    Performance Assessment of Galileo In-Orbit Satellite Clocks

    Yu, Biyun / Zhang, Huijun / Li, Xiaohui | British Library Conference Proceedings | 2016