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Ground segment

About: Ground segment is a research topic. Over the lifetime, 775 publications have been published within this topic receiving 9324 citations. The topic is also known as: control segment & earth segment.


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Journal ArticleDOI
TL;DR: The XMM-Newton Observatory is a cornerstone mission of the European Space Agency's Horizon 2000 programme, and is the largest scientific satellite it has launched to date as mentioned in this paper, which has been enabled by the unprecedentedly large effective area of the three mirror modules, which are briefly described.
Abstract: The XMM-Newton Observatory is a cornerstone mission of the European Space Agency's Horizon 2000 programme, and is the largest scientific satellite it has launched to date. This paper summarises the principal characteristics of the Observatory which are pertinent to scientific operations. The scientific results appearing in this issue have been enabled by the unprecedentedly large effective area of the three mirror modules, which are briefly described. The in-orbit performance and preliminary calibrations of the observatory are briefly summarised. The observations from the XMM-Newton calibration and performance verification phase, which are public and from which most papers in this issue have been derived, are listed. The flow of data from the spacecraft, through the ground segment, to the production of preliminary science products supplied to users is also discussed.

1,958 citations

Journal ArticleDOI
M. Auvergne1, P. Bodin2, L. Boisnard2, J.-T. Buey1, S. Chaintreuil1, G. Epstein1, M. Jouret2, T. Lam-Trong2, P. Levacher, A. Magnan, R. Perez2, P. Plasson1, J.-Y. Plesseria, Gisbert Peter, M. Steller3, D. Tiphène1, A. Baglin1, P. Agogué2, Thierry Appourchaux4, D. Barbet4, T. Beaufort5, R. Bellenger1, R. Berlin, P. Bernardi1, D. Blouin, Patrick Boumier4, F. Bonneau2, R. Briet2, B. Butler5, R. Cautain, F. Chiavassa2, V. Costes2, J. Cuvilho, V. Cunha-Parro1, F. De Oliveira Fialho1, M. Decaudin4, J.-M. Defise, S. Djalal2, A. Docclo1, R. Drummond6, O. Dupuis1, G. Exil1, C. Fauré2, A. Gaboriaud2, P. Gamet2, P. Gavalda2, E. Grolleau1, L. Gueguen1, V. Guivarc'h1, P. Guterman, J. Hasiba3, G. Huntzinger1, H. Hustaix2, C. Imbert2, G. Jeanville1, B. Johlander5, Laurent Jorda, P. Journoud1, F. Karioty1, L. Kerjean2, L. Lafond2, V. Lapeyrere1, P. Landiech2, T. Larqué2, P. Laudet2, J. Le Merrer, L. Leporati, B. Leruyet1, B. Levieuge1, Antoine Llebaria, L. Martin, E. Mazy, J.-M. Mesnager2, J.-P. Michel1, J.-P. Moalic4, W. Monjoin1, D. Naudet1, S. Neukirchner3, K. Nguyen-Kim4, Marc Ollivier4, J.-L. Orcesi4, H. Ottacher3, A. Oulali1, J. Parisot1, S. Perruchot, A. Piacentino1, L. Pinheiro da Silva1, J. Platzer1, B. Pontet2, A. Pradines2, Céline Quentin, U. Rohbeck, G. Rolland2, F. Rollenhagen, R. Romagnan1, N. Russ, R. Samadi1, R. Schmidt1, N. Schwartz1, I. Sebbag2, H. Smit5, W. Sunter5, M. Tello2, P. Toulouse2, B. Ulmer, O. Vandermarcq2, E. Vergnault2, R. Wallner3, G. Waultier, P. Zanatta1 
TL;DR: In this paper, the authors present a complete overview of the instrument and platform behavior for all environmental conditions for CoRoT, and show that the performance specifications are easily satisfied when the environmental conditions are favorable.
Abstract: Context. CoRoT is a space telescope dedicated to stellar seismology and the search for extrasolar planets. The mission is led by the CNES in association with French laboratories and has a large international participation. The European Space Agency (ESA), Austria, Belgium, and Germany contribute to the payload, and Spain and Brazil contribute to the ground segment. Development of the spacecraft, which is based on a PROTEUS low earth orbit (LEO) recurrent platform, commenced in October 2000, and the satellite was launched on December 27, 2006. Aims. The instrument and platform characteristics prior to launch have been described in ESA publication (SP-1306). In the present paper we explain the behaviour in flight, based on raw and corrected data. Methods. Five runs have been completed since January 2007. The data used here are essentially those acquired during the commissioning phase and from a long run that lasted 146 days. These enable us to give a complete overview of the instrument and platform behaviour for all environmental conditions. The ground based data processing is not described in detail because the most important method has been published elsewhere. Results. We show that the performance specifications are easily satisfied when the environmental conditions are favourable. Most of the perturbations, hence data corrections, are related to LEO perturbations: high energy particles inside the South Atlantic Anomaly (SAA), eclipses and temperature variations, and line of sight fluctuations due to the attitude control system. Straylight due to the reflected light from the earth, which is controlled by the telescope and baffle design, appears to be negligible.

781 citations

Journal ArticleDOI
TL;DR: CoRoT as mentioned in this paper is a space telescope dedicated to stellar seismology and the search for extrasolar planets, which was launched on December 27th 2006 and has been completed since January 2007.
Abstract: CoRoT is a space telescope dedicated to stellar seismology and the search for extrasolar planets. The mission is led by CNES in association with French laboratories and has a large international participation: the European Space Agency (ESA), Austria, Belgium and Germany contribute to the payload, and Spain and Brazil contribute to the ground segment. Development of the spacecraft, which is based on a PROTEUS low earth orbit recurrent platform, commenced in October 2000 and the satellite was launched on December 27th 2006. The instrument and platform characteristics prior to launch have been described in ESA publication (SP-1306) . In the present paper we detail the behaviour in flight, based on raw and corrected data. Five runs have been completed since January 2007. The data used here are essentially those acquired during the commissioning phase and from a long run which lasted 146 days, these enable us to give a complete overview of the instrument and platform behaviour for all environmental conditions. The ground based data processing is not described in detail, the most important method being published elsewhere. It is shown that the performance specifications are easily satisfied when the environmental conditions are favourable. Most of the perturbations, and consequently data corrections, are related to Low Earth Orbit (LEO) perturbations: high energy particles inside the South Atlantic Anomaly (SAA), eclipses and temperature variations, and line of sight fluctuations due to the attitude control system. Straylight due to the reflected light from the earth, which is controlled by the telescope and baffle design, appears to be negligible.

704 citations

Journal ArticleDOI
TL;DR: The German small satellite CHAMP is on the final track for launch on July 15, 2000 into a circular, near-polar and 460 km altitude orbit as discussed by the authors, with synergetic use for precise orbit determination, global gravity and magnetic field recovery, and GPS atmosphere and ionosphere profiling.

695 citations

Journal ArticleDOI
TL;DR: A statistical method is developed to estimate the total system throughput, considering both the orbital dynamics of the space-segment and the variability in performance induced by atmospheric conditions both for the user and feeder links, and identifies some of the major technical challenges that the three systems will have to overcome before becoming operational.

472 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202318
202241
202119
202023
201924
201845