Spacecraft VLBI and Doppler tracking: Algorithms and implementation

Авторы: Duev D.A., Molera Calvés G., Pogrebenko S.V., Gurvits L.I., Cimó G., Bocanegra Bahamon T.
Журнал: Astronomy and Astrophysics
Том: 541
Номер: id.A43
Год издания: 2012
Издательство: Springer Verlag
Местоположение издательства: Germany
DOI: 10.1051/0004-6361/201218885
Аннотация: Aims. We present the results of several multi-station Very Long Baseline Interferometry (VLBI) experiments conducted with the ESA spacecraft Venus Express as a target. To determine the true capabilities of VLBI tracking for future planetary missions in the solar system, it is necessary to demonstrate the accuracy of the method for existing operational spacecraft. Methods. We describe the software pipeline for the processing of phase referencing near-field VLBI observations and present results of the ESA Venus Express spacecraft observing campaign conducted in 2010-2011. Results. We show that a highly accurate determination of spacecraft state-vectors is achievable with our method. The consistency of the positions indicates that an internal rms accuracy of 0.1 mas has been achieved. However, systematic effects produce offsets up to 1 mas, but can be reduced by better modelling of the troposphere and ionosphere and closer target-calibrator configurations. © 2012 ESO.
Добавил в систему: Дуев Дмитрий Андреевич

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