MG15 - Talk detail |
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Participant |
Tommei, Giacomo | |||||||
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Institution |
Dep. of Mathematics, University of Pisa - Largo Bruno Pontecorvo 5\ - Pisa - Tuscany - Italy | |||||||
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Session |
PT6 |
Accepted |
Yes |
Order |
5 |
Time |
17:15 | 20' |
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Talk |
Oral abstract |
Title |
Radio Science as tool for testing alternative theories of gravity: the BepiColombo mission case | |||||
| Coauthors | Schettino, Giulia; Serra, Daniele; Dipierri, Vincenzo | |||||||
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Abstract |
Radio Science (RS) deals with radio tracking of interplanetary probes, looking for changes in the frequency as well as roundtrip light time of signals to investigate geophysical phenomena and for tests of fundamental physics. For this reason, RS systems are now a custom in space missions. BepiColombo is a ESA/JAXA mission to Mercury mounting a Ka-band transponder in order to perform a very accurate RS experiment. In particular, it will be possible to test General Relativity (GR) and alternative theories with an unprecedented level of accuracy. The Celestial Mechanics Group of the University of Pisa developed a new dedicated software, ORBIT14, to simulate the RS experiment of BepiColombo and to analyze the future real data (as it is already doing for the Juno mission data). In this talk, after a brief description of the dedicated software, we will report on the relativity results of a full set of simulations, carried out in the most up-to-date mission scenario. |
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Pdf file |
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Session |
PT5 |
Accepted |
Yes |
Order |
2 |
Time |
15:35 | 20' |
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Talk |
Oral abstract |
Title |
The ORBIT14 software for testing GR and alternative theories of gravity with the BepiColombo mission | |||||
| Coauthors | Schettino, Giulia; Dipierri, Vincenzo; Serra, Daniele | |||||||
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Abstract |
The ORBIT14 software system has been developed by the Celestial Mechanics Group of the University of Pisa starting since 2007 as a new dedicated software for MORE, the Mercury Orbiter Radioscience Experiment of the BepiColombo mission. The idea was to have a software tool independent from the existing ones like ODP (Orbit Determination Program) and MONTE (Mission-analysis, Operations, and Navigation Toolkit Environment). ORBIT14 is able to generate simulated tracking observables (range and range-rate), on-board accelerometer measurements, on-board camera angular observations and to solve-for a large list of parameters of interest by a global least-squares fit. An innovative constrained multi-arc strategy is applied in the tracking measurements processing, and state-of-the-art error models are taken into account for each type of measurements involved. In this talk, we will highlight the main features of our software system showing some simulation results about the relativity experiment of the BepiColombo mission. |
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Pdf file |
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