The Doppler difference method as applied to track the GEOS 3 spacecraft is discussed. In this method a pair of 2 GHz ground tracking stations simultaneously track a spacecraft beacon to generate an observable signal in which bias and instability of the carrier frequency cancel. The baselines are formed by the tracking sites at Bermuda, Rosman, and Merritt Island. Measurements were made to evaluate the effectiveness of the Doppler differencing procedure in tracking a beacon target with the high dynamic rate of the GEOS 3 orbit. Results indicate the precision of the differenced data to be at a level comparable to the conventional precise two way Doppler tracking.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    GEOS-3 Doppler Difference Tracking


    Contributors:

    Publication date :

    1977


    Size :

    43 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




    GEOS-3 Doppler difference tracking

    Rosenbaum, B. | NTRS | 1977


    NASA GEOS Composition Forecast System: “GEOS-CF”

    K. Emma Knowland / Christoph Keller / Lesley Ott et al. | NTRS


    NASA GEOS Composition Forecast System: “GEOS-CF”

    K. Emma Knowland / Christoph Keller / Lesley Ott et al. | NTRS


    NASA GEOS Composition Forecast System: “GEOS-CF”

    K. Emma Knowland / Christoph Andrea Keller / Lesley Elaine Ott et al. | NTRS


    NASA GEOS Composition Forecast System: “GEOS-CF”

    K. E. Knowland / C. Keller / P. Wales et al. | NTIS | 2022