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Light-time computations for the BepiColombo Radio Science Experiment

Tommei, Giacomo and Milani, Andrea and Vokrouhlicky, David (2010) Light-time computations for the BepiColombo Radio Science Experiment. Celestial Mechanics and Dynamical Astronomy, 107 (1-2). pp. 285-298. ISSN 1572-9478

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    SUMMARY The Radio Science Experiment is one of the on board experiments of the Mercury ESA mission BepiColombo that will be launched in 2014. The goals of the experiment are to determine the gravity field of Mercury and its rotation state, to determine the orbit of Mercury, to constrain the possible theories of gravitation (for example by determining the post-Newtonian (PN) parameters), to provide the spacecraft position for geodesy experiments and to contribute to planetary ephemerides improvement. This is possible thanks to a new technology which allows to reach great accuracies in the observables range and range rate; it is well known that a similar level of accuracy requires studying a suitable model taking into account numerous relativistic effects. In this paper we deal with the modelling of the space-time coordinate transformations needed for the light-time computations and the numerical methods adopted to avoid rounding-off errors in such computations.

    Item Type: Article
    Uncontrolled Keywords: Mercury, Interplanetary tracking, Light-time, Relativistic effects, Numerical methods
    Subjects: Area09 - Ingegneria industriale e dell'informazione > ING-IND/03 - Meccanica del volo
    Area01 - Scienze matematiche e informatiche > MAT/07 - Fisica matematica
    Divisions: Dipartimenti (until 2012) > DIPARTIMENTO DI MATEMATICA "L. TONELLI"
    Depositing User: Dr Giacomo Tommei
    Date Deposited: 10 Jun 2010
    Last Modified: 20 Dec 2010 11:46
    URI: http://eprints.adm.unipi.it/id/eprint/720

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