Abstract The usefulness of space-VLBI for astrometric and geodynamic applications depends strongly on the orbit determination accuracy of the satellites involved. The requirements are very strict. In this paper, the results are presented of some preliminary investigations on the achievable orbit accuracy of the Soviet Radioastron and the ESA QUASAT space-VLBI satellites. For this purpose, simulations have been performed for a total of 23 orbital arcs, in which satellite observations from Precise Range and Range-rate Equipment (PRARE) were considered, as well as VLBI-type tracking of the satellite signals. The assumed tracking network consisted of 2 to 3 VLBI and 3 to 18 PRARE stations. The computations were carried out at Delft University of Technology using a computer program for covariance analysis of orbit determination problems.


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    Title :

    On orbit determination accuracy of space-VLBI satellites


    Contributors:
    Borza, T. (author) / Fejes, I. (author) / Ambrosius, B.A.C. (author)

    Published in:

    Advances in Space Research ; 10 , 3-4 ; 321-326


    Publication date :

    1989-01-01


    Size :

    6 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




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