At present spacecraft angular position with Deep Space Network (DSN) is determined using group delay estimates from very long baseline interferometer (VLBI) phase measurements employing differential one way ranging (DOR) tones. As an alternative to this approach, we propose estimating position of a spacecraft to half a fringe cycle accuracy using time variations between measured and calculated phases as the Earth rotates using DSN VLBI baseline(s). Combining fringe location of the target with the phase allows high accuracy for spacecraft angular position estimate. This can be achieved using telemetry signals of at least 4–8 MSamples/sec data rate or DOR tones.


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    Title :

    Accurate spacecraft angular position from DSN VLBI phases using X-band telemetry or DOR tones


    Contributors:
    Bagri, D. S. (author) / Majid, Walid (author)


    Publication date :

    2009-03-01


    Size :

    312376 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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