The Magellan mission was the first in which Doppler and differenced Doppler tracking data were acquired at X-band uplink/downlink frequencies from the Deep Space Network (DSN). This paper describes a reconstruction of the Venus approach-phase navigation investigating the capabilities of these data types, which are up to an order of magnitude more precise than similar data acquired at S-band frequencies in previous missions. Comparisons of orbit solutions obtained with Doppler, Doppler plus differenced Doppler, and Doppler plus delta-differential one-way Range (DeltaDOR) data indicate that both differenced Doppler and DeltaDOR yield improvements of factors of 3 to 5 over the accuracy of the Doppler-only solutions obtained during Venus approach operations, in which the Doppler data were deweighted from their inherent accuracy due to mismodeling problems.


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    Title :

    Differenced Doppler tracking in interplanetary navigation - The Magellan cruise reconstruction


    Contributors:

    Conference:

    AIAA and AAS, Astrodynamics Conference ; 1992 ; Hilton Head Island, SC, United States


    Publication date :

    1992-08-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English





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