In the rendezvous and docking of spacecraft, GNSS signals can reflect off the target vehicle and cause prohibitively large errors in the chaser vehicle receiver at ranges below 200 meters. It has been proposed that the additional ray paths, or multipath, be used as a source of information about the state of the target relative to the receiver. With Hubble Servicing Mission 4 as a case study, electromagnetic ray tracing has been used to construct a model of reflected signals from known geometry. Oscillations in the prompt correlator power due to multipath, known as multipath fading, are studied as a means of model validation. Agreement between the measured and simulated multipath fading serves to confirm the presence of signals reflected off the target spacecraft that might be used for relative navigation.


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    Titel :

    Validation of GNSS Multipath Model for Space Proximity Operations Using the Hubble Servicing Mission 4 Experiment


    Beteiligte:
    Ashman, Ben (Autor:in) / Veldman, Jeanette (Autor:in) / Axelrad, Penina (Autor:in) / Garrison, James (Autor:in) / Winternitz, Luke (Autor:in)

    Kongress:

    ION GNSS+ 2016 ; 2016 ; Portland, OR, United States


    Erscheinungsdatum :

    2016-09-12


    Medientyp :

    Sonstige


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :




    Validation of GNSS Multipath Model for Space Proximity Operations Using the Hubble Servicing Mission 4 Experiment

    Ashman, B. W. / Veldman, J. L. / Axelrad, P. et al. | British Library Conference Proceedings | 2016



    Hubble Space Telescope Servicing Mission 3A Rendezvous Operations

    Lee, S. / Anandakrishnan, S. / Connor, C. et al. | NTRS | 2001