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Mass variation observing system by high low inter-satellite links (MOBILE) : a new concept for sustained observation of mass transport from space / Roland Pail in Journal of geodetic science, vol 9 n° 1 (January 2019)  

Public [article]  inJournal of geodetic science > vol 9 n° 1 (January 2019) . - pp 48 - 58 Titre : Mass variation observing system by high low inter-satellite links (MOBILE) : a new concept for sustained observation of mass transport from space Type de document : Article/Communication Auteurs : Roland Pail, Auteur ; Jonathan Bamber, Auteur ; Richard Biancale, Auteur ; Rory Bingham, Auteur ; Carla Braitenberg, Auteur ; Annette Eicker, Auteur ; Frank Flechtner, Auteur ; Thomas Gruber, Auteur ; Andreas Güntner, Auteur ; Gerhard Heinzel, Auteur ; Martin Horwath, Auteur ; Laurent Longuevergne, Auteur ; J. Muller, Auteur ; Isabelle Panet , Auteur ; Hubert Savenije, Auteur ; S. Seneviratne, Auteur ; Nico Sneeuw, Auteur ; Tonie M. van Dam, Auteur ; Bert Wouters, Auteur Année de publication : 2019 Projets : 1-Pas de projet / Article en page(s) : pp 48 - 58 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie physique [Termes descripteurs IGN] champ de pesanteur terrestre [Termes descripteurs IGN] gravimétrie spatiale [Termes descripteurs IGN] harmonique sphérique [Termes descripteurs IGN] masse Résumé : (auteur) As changes in gravity are directly related to mass variability, satellite missions observing the Earth’s time varying gravity field are a unique tool for observing mass transport processes in the Earth system, such as the water cycle, rapid changes in the cryosphere, oceans, and solid Earth processes, on a global scale. The observation of Earth’s gravity field was successfully performed by the GRACE and GOCE satellite missions, and will be continued by the GRACE Follow-On mission. A comprehensive team of European scientists proposed the next-generation gravity field mission MOBILE in response to the European Space Agency (ESA) call for a Core Mission in the frame of Earth Explorer 10 (EE10). MOBILE is based on the innovative observational concept of a high-low tracking formation with micrometer ranging accuracy, complemented by new instrument concepts. Since a high-low tracking mission primarily observes the radial component of gravity-induced orbit perturbations, the error structure is close to isotropic. This geometry significantly reduces artefacts of previous along-track ranging low-low formations (GRACE, GRACE-Follow-On) such as the typical striping patterns. The minimum configuration consists of at least two medium-Earth orbiters (MEOs) at 10000 km altitude or higher, and one low-Earth orbiter (LEO) at 350-400 km. The main instrument is a laser-based distance or distance change measurement system, which is placed at the LEO. The MEOs are equipped either with passive reflectors or transponders. In a numerical closed-loop simulation, it was demonstrated that this minimum configuration is in agreement with the threshold science requirements of 5 mm equivalent water height (EWH) accuracy at 400 km wavelength, and 10 cm EWH at 200 km. MOBILE provides promising potential future perspectives by linking the concept to existing space infrastructure such as Galileo next-generation, as future element of the Copernicus/Sentinel programme, and holds the potential of miniaturization even up to swarm configurations. As such MOBILE can be considered as a precursor and role model for a sustained mass transport observing system from space. Numéro de notice : A2019-635 Affiliation des auteurs : Géodésie+Ext (mi2018-2019) Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1515/jogs-2019-0006 date de publication en ligne : 21/10/2019 En ligne : https://doi.org/10.1515/jogs-2019-0006 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=95454 [article]

Recent activities of the GGOS standing committee on Performance simulations and Architectural Trade-Offs (PLATO) / Benjamin Männel (2018)  

Public Titre : Recent activities of the GGOS standing committee on Performance simulations and Architectural Trade-Offs (PLATO) Type de document : Chapitre/Contribution Auteurs : Benjamin Männel, Auteur ; Daniela Thaller, Auteur ; Markus Rothacher, Auteur ; Johannes Böhm, Auteur ; Jurgen Müller, Auteur ; Susanne Glaser, Auteur ; Rolf Dach, Auteur ; Richard Biancale, Auteur ; Mathis Blossfeld, Auteur ; Alexander Kehm, Auteur ; Iván Herrera Pinzón, Auteur ; Franz Hofmann, Auteur ; Florian Andritsch, Auteur ; David Coulot , Auteur ; Arnaud Pollet , Auteur Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 2018 Importance : pp 1 - 4 Langues : Anglais (eng) Résumé : (auteur) The Standing Committee on Performance Simulations and Architectural Trade-Offs (PLATO) was established by the Bureau of Networks and Observations of the Global Geodetic Observing System (GGOS) in order to support – by prior performance analysis – activities to reach the GGOS requirements for the accuracy and stability of the terrestrial reference frame. Based on available data sets and simulated observations for further stations and satellite missions the committee studies the impact of technique-specific improvements, new stations, and additional co-locations in space on reference frame products. Simulation studies carried out so far show the importance of the individual station performance and additional stations for satellite laser ranging, the perspectives for lunar laser ranging assuming additional stations and reflectors, and the significant impact of the new VGOS antennas. Significant progress is achieved in processing VLBI satellite tracking data. New insights in technique-specific error sources were derived based on real data from short baselines. Regarding co-location in space PLATO members confirmed that E-GRASP could fulfill the GGOS requirements with reaching a geocenter and scale accuracy and stability of 1 mm and 0.1 mm/year, respectively. Numéro de notice : H2018-006 Affiliation des auteurs : LaSTIG LAREG+Ext (2012-mi2018) Nature : Chapître / contribution nature-HAL : ChOuvrScient DOI : 10.1007/1345_2018_30 date de publication en ligne : 11/04/2018 En ligne : http://dx.doi.org/10.1007/1345_2018_30 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=90562

Multi-technique combination of space geodesy observations: Impact of the Jason-2 satellite on the GPS satellite orbits estimation / Myriam Zoulida in Advances in space research, vol 58 n° 7 (October 2016)  

Public [article]  inAdvances in space research > vol 58 n° 7 (October 2016) . - pp 1376 - 1389 Titre : Multi-technique combination of space geodesy observations: Impact of the Jason-2 satellite on the GPS satellite orbits estimation Type de document : Article/Communication Auteurs : Myriam Zoulida, Auteur ; Arnaud Pollet , Auteur ; David Coulot , Auteur ; Félix Perosanz, Auteur ; Sylvain Loyer, Auteur ; Richard Biancale, Auteur ; Paul Rebischung , Auteur Année de publication : 2016 Article en page(s) : pp 1376 - 1389 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes descripteurs IGN] données Jason [Termes descripteurs IGN] orbitographie [Termes descripteurs IGN] satellite GPS [Vedettes matières IGN] Traitement de données GNSS Résumé : (auteur) In order to improve the Precise Orbit Determination (POD) of the GPS constellation and the Jason-2 Low Earth Orbiter (LEO), we carry out a simultaneous estimation of GPS satellite orbits along with Jason-2 orbits, using GINS software. Along with GPS station observations, we use Jason-2 GPS, SLR and DORIS observations, over a data span of 6 months (28/05/2011–03/12/2011). We use the Geophysical Data Records-D (GDR-D) orbit estimation standards for the Jason-2 satellite. A GPS-only solution is computed as well, where only the GPS station observations are used. It appears that adding the LEO GPS observations results in an increase of about 0.7% of ambiguities fixed, with respect to the GPS-only solution. The resulting GPS orbits from both solutions are of equivalent quality, agreeing with each other at about 7 mm on Root Mean Square (RMS). Comparisons of the resulting GPS orbits to the International GNSS Service (IGS) final orbits show the same level of agreement for both the GPS-only orbits, at 1.38 cm in RMS, and the GPS + Jason2 orbits at 1.33 cm in RMS. We also compare the resulting Jason-2 orbits with the 3-technique Segment Sol multi-missions d’ALTimétrie, d’orbitographie et de localisation précise (SSALTO) POD products. The orbits show good agreement, with 2.02 cm of orbit differences global RMS, and 0.98 cm of orbit differences RMS on the radial component. Numéro de notice : A2016-963 Affiliation des auteurs : LAREG+Ext (1991-2011) Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.asr.2016.06.019 date de publication en ligne : 22/06/2016 En ligne : http://dx.doi.org/10.1016/j.asr.2016.06.019 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=83580 [article]

Determination of terrestrial frames by optimal combination of GNSS, DORIS and SLR measurements / Myriam Zoulida (2016)    

Public Titre : Determination of terrestrial frames by optimal combination of GNSS, DORIS and SLR measurements Type de document : Thèse/HDR Auteurs : Myriam Zoulida, Auteur ; Richard Biancale, Directeur de thèse Editeur : Paris : Université Sorbonne Paris Cité Année de publication : 2016 Importance : 154 p. Note générale : bibliographie Thèse préparée à l’Institut de physique du globe de Paris, école doctorale STEP’UP – ED no 560, Institut national de l’information géographique et forestière – Laboratoire de recherche en géodésie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale [Termes descripteurs IGN] données DORIS [Termes descripteurs IGN] données GNSS [Termes descripteurs IGN] données TLS (télémétrie) [Termes descripteurs IGN] International Terrestrial Reference Frame Note de contenu : Introduction 1 Space geodesy techniques: strengths and weaknesses 1.1 Doppler Orbitography by Radiopositioning Integrated on Satellite 1.2 Global Positioning System 1.3 Satellite Laser Ranging 1.4 Very Long Baseline Interferometry 1.5 Geodetic Parameters 1.5.1 ICRF and Earth Orientation Parameters 1.5.2 Station positions and reference frame definition 1.6 Summary 2 Combining the space geodesy techniques for reference frames realization 2.1 Combination at the solution level 2.1.1 The International Terrestrial Reference Frame 2.1.2 Limitations of combination at the solution level 2.2 Combination at the observation level 2.2.1 State-of-the-art on combinations at the observation level 2.3 Inter-technique ties 2.3.1 Local ties and ground co-location sites 2.3.2 Space ties: an alternative approach 2.4 The Global Geodetic Observation System 2.4.1 GGOS-D: homogeneous reprocessing and rigorous combination of space geodetic observations . 3 Precise Orbit Determination, multi-technique satellites and space co-locations 3.1 Errors affecting the POD products and state-of-the-art 3.2 Mono-technique satellites 3.2.1 DORIS-only satellites 3.2.2 GNSS satellites 3.2.3 SLR-only satellites 3.3 Multi-technique satellites 3.3.1 Jason 1-2-3 3.3.2 Cryosat-2 3.3.3 Envisat 3.4 Space co-locations: State-of-the-art and challenges 3.4.1 GNSS-SLR combination on GNSS satellites 3.4.2 Multi-technique combination with Jason-2 3.5 GRASP : Geodetic Reference Antenna in Space 4 Simultaneous estimation of GPS satellite orbits along with the Jason-2 satellite orbit 4.1 Data, software and parametrization 4.1.1 Data used 4.1.2 Software and processing strategy 4.1.3 Estimated parameters 4.2 Results 4.2.1 On the ambiguity _xation of the GPS ground stations 4.2.2 On the determination of the orbits of the GPS constellation satellites 4.2.3 On the Jason-2 satellite orbit determination 4.3 Summary 5 TRF estimation and space ties re-evaluation 5.1 Data processing 5.1.1 Input data 5.1.2 SINEX _les processing 5.2 Comparison to short-term TRF solutions 5.3 Helmert transformation to the ITRF2014P 5.4 Space-ties re-evaluation 5.5 Summary 6 Conclusions-Perspectives 6.1 Summary 6.2 Perspectives Numéro de notice : 17346 Affiliation des auteurs : IGN (2012-2019) Thématique : POSITIONNEMENT Nature : Thèse française Note de thèse : thèse de doctorat : Géodésie : IPGP : 2016 Organisme de stage : Lareg (IGN) nature-HAL : Thèse DOI : sans En ligne : http://www.theses.fr/2016USPCC050 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=83705

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The International DORIS Service (IDS) : Recent developments in preparation of ITRF2013 / Pascal Willis (2016)  

Public contenu dans IAG 150 Years / Chris Rizos (2016)   Titre : The International DORIS Service (IDS) : Recent developments in preparation of ITRF2013 Type de document : Article/Communication Auteurs : Pascal Willis , Auteur ; Franck G. Lemoine, Auteur ; Guilhem Moreaux, Auteur ; Laurent Soudarin, Auteur ; Pascale Ferrage, Auteur ; J.C. Ries, Auteur ; Michiel Otten, Auteur ; Jérôme Saunier , Auteur ; Carey E. Noll, Auteur ; Richard Biancale, Auteur ; Brian Luzum, Auteur Congrès : Congrès: IAG 2013, Scientific assembly IAG 150 Years (2013; Postdam, Allemagne), Commanditaire Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 2016 Importance : pp 1 - 9 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes de référence et réseaux [Termes descripteurs IGN] données Jason [Termes descripteurs IGN] International DORIS Service [Termes descripteurs IGN] International Terrestrial Reference Frame [Termes descripteurs IGN] Jason [Termes descripteurs IGN] mouvement du pôle Résumé : (auteur) The International DORIS Service (IDS) was created in 2003 under the umbrella of the International Association of Geodesy (IAG) to foster scientific research related to the French DORIS tracking system and to deliver scientific products, mostly related to the International Earth rotation and Reference systems Service (IERS). We first present some general background related to the DORIS system (current and planned satellites, current tracking network and expected evolution) and to the general IDS organization (from Data Centers, Analysis Centers and Combination Center). Then, we discuss some of the steps recently taken to prepare the IDS submission to ITRF2013 (combined weekly time series based on individual solutions from several Analysis Centers). In particular, recent results obtained from the Analysis Centers and the Combination Center show that improvements can still be made when updating physical models of some DORIS satellites, such as Envisat, Cryosat-2 or Jason-2. The DORIS contribution to ITRF2013 should also benefit from the larger number of ground observations collected by the last generation of DGXX receivers (first instrument being onboard Jason-2 satellite). In particular for polar motion, sub-milliarcsecond accuracy seems now to be achievable. Weekly station positioning internal consistency also seems to be improved with a larger DORIS constellation. Numéro de notice : C2013-051 Affiliation des auteurs : IGN+Ext (2012-2019) Thématique : POSITIONNEMENT Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : 10.1007/1345_2015_164 date de publication en ligne : 13/08/2015 En ligne : http://dx.doi.org/10.1007/1345_2015_164 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=78595

Application d'algorithmes génétiques à la détermination d'orbites optimales pour GRASP / Arnaud Pollet in XYZ, n° 144 (septembre - novembre 2015)

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Laser ranging data analysis for a colocation campaign of French Transportable Laser Ranging System (FTLRS) in Tahiti / Xiaoni Wang in Journal of geodesy, vol 89 n° 1 (January 2015)  

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Rapport d'activité 2014 Groupe de Recherche de Géodésie Spatiale GRGS / Pierre Exertier (2015) 

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IDS International DORIS Service Activity Report 2013 / Richard Biancale (2014)  

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Modélisation de la propagation troposphérique des signaux de positionnement par satellites : un tour d'horizon / Camille Desjardins (2014) 

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Earth System Mass Transport Mission (e.motion): A Concept for Future Earth Gravity Field Measurements from Space / Isabelle Panet in Surveys in Geophysics, vol 34 n° 2 (March 2013)  

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GRACE-derived surface water mass anomalies by energy integral approach: application to continental hydrology / Guillaume Ramillien in Journal of geodesy, vol 85 n° 6 (June 2011)  

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Rapport d'activité 2009 Groupe de Recherche de Géodésie Spatiale GRGS / Nicole Capitaine (2010) 

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Ocean tide loading (OTL) displacements from global and local grids: comparisons to GPS estimates over the shelf of Brittany, France / S. Melachroinos in Journal of geodesy, vol 82 n° 6 (June 2008)

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Positionnement géodésique à haute fréquence de réseaux GNSS terrestres et marins / S. Melachroinos (2007) 

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