Title: Rosetta Radio Science Investigations (RSI)
Authors: Paetzold, Martin ×
Haeusler, Bernd
Aksnes, Kaare
Anderson, John D
Asmar, Sami W
Barriot, Jean-Pierre
Bird, Michael K
Boehnhardt, Hermann
Eidel, Werner
Gruen, Eberhardt
Ip, Wing H
Marouf, Essam
Morley, Trevor
Neubauer, Fritz M
Rickman, Hans
Thomas, Nicolas
Tsurutani, Bruce T
Wallis, Max K
Wickramasinghe, N. C
Mysen, Eirik
Olson, Oystein
Remus, Stefan
Tellmann, Silvia
Andert, Thomas
Carone, Ludmila
Fels, Markus
Stanzel, Christina
Audenrieth-Kersten, Iris
Gahr, Alexander
Mueller, Anna-Liane
Stupar, Dusan
Walter, Christina #
Issue Date: 2007
Publisher: D. Reidel Pub. Co.
Series Title: Space Science Reviews vol:128 issue:1-4 pages:599-627
Abstract: The Rosetta spacecraft has been successfully launched on 2nd March 2004 to its new target comet 67 P/Churyurnov-Gerasimenko. The science objectives of the Rosetta Radio Science Investigations (RSI) experiment address fundamental aspects of cometary physics such as the mass and bulk density of the nucleus, its gravity field, its interplanetary orbit perturbed by nongravitational forces, its size and shape, its internal structure, the composition and roughness of the nucleus surface, the abundance of large dust grains, the plasma content in the coma and the combined dust and gas mass flux. The masses of two asteroids, Steins and Lutetia, shall be determined during flybys in 2008 and 2010. respectively. Secondary objectives are the radio sounding of the solar corona during the superior conjunctions of the spacecraft with the Sun during the cruise phase. The radio carrier links of the spacecraft Telemetry, Tracking and Command (TT&C) subsystem between the orbiter and the Earth will be used for these investigations. An Ultrastable oscillator (USO) connected to both transponders of the radio subsystem serves as a stable frequency reference source for both radio downlinks at X-band (8.4 GHz) and S-band (2.3 GHz) in the one-way mode. The Simultaneous and coherent dual-frequency downlinks via the High Gain Antenna (HGA) permit separation of contributions from the classical Doppler shift and the dispersive media effects caused by the motion of the spacecraft with respect to the Earth and the propagation of the signals through the dispersive media, respectively.
ISSN: 0038-6308
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Non-KU Leuven Association publications
× corresponding author
# (joint) last author

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