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GSFC DORIS contribution to ITRF2008 / Karine Le Bail in Advances in space research, vol 45 n° 12 (15/06/2010)
[article]
Titre : GSFC DORIS contribution to ITRF2008 Type de document : Article/Communication Auteurs : Karine Le Bail , Auteur ; Franck G. Lemoine, Auteur ; Douglas S. Chinn, Auteur Année de publication : 2010 Article en page(s) : pp 1481 - 1499 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes de référence et réseaux
[Termes IGN] données DORIS
[Termes IGN] International Terrestrial Reference Frame
[Termes IGN] orbitographie
[Termes IGN] orientation de la TerreRésumé : (Auteur) The NASA GSFC DORIS analysis center has provided weekly DORIS solutions from November 1992 to January 2009 (839 SINEX files) of station positions and Earth Orientation Parameters for inclusion in the DORIS contribution to ITRF2008. The NASA GSFC GEODYN orbit determination software was used to process the orbits and produce the normal equations. The weekly SINEX gscwd10 submissions included DORIS data from Envisat, TOPEX/Poseidon, SPOT-2, SPOT-3, SPOT-4, SPOT-5. The orbits were mostly seven days in length (except for weeks with data gaps or maneuvers). The processing used the GRACE-derived EIGEN-GL04S1 gravity model, updated modeling for time-variable gravity, the GOT4.7 ocean tide model and tuned satellite-specific macromodels for SPOT-2, SPOT-3, SPOT-4, SPOT-5 and TOPEX/Poseidon. The University College London (UCL) radiation pressure model for Envisat improves nonconservative force modeling for this satellite, reducing the median residual empirical daily along-track accelerations from 3.75 * 10-9 m/s2 with the a priori macromodel to 0.99 * 10-9 m/s2 with the UCL model. For the SPOT and Envisat DORIS satellite orbits from 2003 to 2008, we obtain average RMS overlaps of 0.8–0.9 cm in the radial direction, 2.1–3.4 cm cross-track, and 1.7–2.3 cm along-track. The RMS orbit differences between Envisat DORIS-only and SLR & DORIS orbits are 1.1 cm radially, 6.4 cm along-track and 3.7 cm cross-track and are characterized by systematic along-track mean offsets due to the Envisat DORIS system time bias of 15–10 ?s. We obtain a good agreement between the geometrically-determined geocenter parameters and geocenter parameters determined dynamically from analysis of the degree one terms of the geopotential. The intrinsic RMS weekly position repeatability with respect to the IDS-3 combination ranges from 2.5 to 3.0 cm in 1993–1994 to 1.5 cm in 2007–2008. Numéro de notice : A2010-362 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.asr.2010.01.030 En ligne : http://dx.doi.org/doi/10.1016/j.asr.2010.01.030 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30556
in Advances in space research > vol 45 n° 12 (15/06/2010) . - pp 1481 - 1499[article]Quality assessment of the IDS contribution to ITRF2008 / Zuheir Altamimi in Advances in space research, vol 45 n° 12 (15/06/2010)
[article]
Titre : Quality assessment of the IDS contribution to ITRF2008 Type de document : Article/Communication Auteurs : Zuheir Altamimi , Auteur ; Xavier Collilieux , Auteur Année de publication : 2010 Article en page(s) : pp 1500 - 1509 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes de référence et réseaux
[Termes IGN] données DORIS
[Termes IGN] International Terrestrial Reference Frame
[Termes IGN] orbitographie
[Termes IGN] qualité des données
[Termes IGN] série temporelleRésumé : (Auteur) Doppler Orbitography Radiopositionning Integrated by Satellite (DORIS) is one of the four fundamental techniques contributing to the ITRF. The optimal coverage over the globe of the DORIS observing sites and sites co-located with GPS, allow a strong embedding of DORIS within the ITRF network. DORIS contributes to the access to ITRF through precise orbit determination of altimetric satellites with onboard DORIS receivers. The DORIS contribution to the ITRF2008 is enhanced by the fact that the solutions of seven analysis centers were included in the submitted combined time series of weekly station positions and daily polar motion. We evaluate the quality of the DORIS combined solution in terms of its agreement with the other techniques (VLBI, SLR, GPS) contributing to the ITRF2008 combination. We show in particular that the precisions of the current IDS products range between 1.5 to 2.6 mm for station positions (at the epochs of minimum variances); better than 1 mm/yr in velocities and between 170 and 260 micro-arc-seconds for polar motion, a significant improvement by a factor of three to five, compared to past data used in the ITRF2005 combination. This improvement is certainly due to improved analysis strategies employed by the seven IDS analysis centers that contributed to the combined weekly submitted solutions of station positions and polar motion. A spectral analysis of DORIS station height time series indicates that annual and semi-annual signals are dominant. However, TOPEX draconitic period of about 118 days is still detected in about 20% of the station position power spectra. DORIS height annual signals correlate well with GPS annual signal estimated at some co-located stations, which show that DORIS technique is able to detect loading signals. Numéro de notice : A2010-363 Affiliation des auteurs : LAREG (1991-2011) Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.asr.2010.03.010 Date de publication en ligne : 15/03/2010 En ligne : https://doi.org/10.1016/j.asr.2010.03.010 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30557
in Advances in space research > vol 45 n° 12 (15/06/2010) . - pp 1500 - 1509[article]Impact of regional reference frame definition on geodynamic interpretations / Juliette Legrand in Journal of geodynamics, vol 49 n° 3-4 (April 2010)
[article]
Titre : Impact of regional reference frame definition on geodynamic interpretations Type de document : Article/Communication Auteurs : Juliette Legrand, Auteur ; Nicolas Bergeot, Auteur ; Carine Bruyninx, Auteur ; Guy Wöppelmann , Auteur ; Marie-Noëlle Bouin , Auteur ; Zuheir Altamimi , Auteur Année de publication : 2010 Article en page(s) : pp 116 - 122 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de géodésie spatiale
[Termes IGN] champ de vitesse
[Termes IGN] données GNSS
[Termes IGN] Europe (géographie physique)
[Termes IGN] géodynamique
[Termes IGN] International Terrestrial Reference FrameRésumé : (auteur) Ten years (1997–2006) of weekly GNSS solutions of 205 globally distributed stations have been used to investigate the impact of the reference frame definition on the estimated station velocities. For that purpose, weekly regional solutions (covering the European region) and global solutions have been, respectively, stacked to obtain regional and global velocity fields. In both cases, the estimated long-term solutions (station positions and velocities) were tied to the ITRF2005 under minimal constraints using a selected set of reference stations. Several sets of global and regional reference stations were tested to evaluate first the impact of the reference frame definition on the global and regional velocity fields and later the impact on the derived geodynamic interpretations.
Results confirm that the regional velocity fields show systematic effects with respect to the global velocity field with differences reaching up to 1.3 mm/year in the horizontal and 2.9 mm/year in the vertical depending on the geographical extent of the network and the chosen set of regional reference stations.
In addition, the estimations of the Euler pole for Western Europe differ significantly when considering a global or a regional strategy. After removing the rigid block rotation, the residual velocity fields show differences which can reach up to 0.8 mm/year in horizontal component.
In Northern Europe, the vertical ground motion is dominated by the Glacial Isostatic Adjustment (GIA). A proper modeling of this effect requires sub-mm/year precision for the vertical velocities for latitudes below 56°. We demonstrate that a profile of vertical velocities shows significant discrepancies according to the reference frame definition strategy. In the case of regional solutions, the vertical modeling does not predict any subsidence around 52° as predicted by the global solution and previous studies.
In summary, we evidence the limitation of regional networks to reconstruct absolute velocity fields and conclude that when geodynamics require the highest precisions for the GNSS-based velocities, a global reference frame definition is more reliable.Numéro de notice : A2010-638 Affiliation des auteurs : IGN+Ext (1940-2011) Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.jog.2009.10.002 Date de publication en ligne : 14/10/2009 En ligne : https://doi.org/10.1016/j.jog.2009.10.002 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=89892
in Journal of geodynamics > vol 49 n° 3-4 (April 2010) . - pp 116 - 122[article]The angular velocities of the plates and the velocity of Earth's centre from space geodesy / Donald F. Argus in Geophysical journal international, vol 180 n° 3 (March 2010)
[article]
Titre : The angular velocities of the plates and the velocity of Earth's centre from space geodesy Type de document : Article/Communication Auteurs : Donald F. Argus, Auteur ; Richard G. Gordon, Auteur ; Michael B. Heflin, Auteur ; Chopo Ma, Auteur ; Richard J. Eanes, Auteur ; Pascal Willis , Auteur ; W. Richard Peltier, Auteur ; Susan E. Owen, Auteur Année de publication : 2010 Article en page(s) : pp 913 - 960 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de géodésie spatiale
[Termes IGN] géocentre
[Termes IGN] International Terrestrial Reference Frame
[Termes IGN] tectonique des plaques
[Termes IGN] vitesse angulaireRésumé : (auteur) Using space geodetic observations from four techniques (GPS, VLBI, SLR and DORIS), we simultaneously estimate the angular velocities of 11 major plates and the velocity of Earth's centre. We call this set of relative plate angular velocities GEODVEL (for GEODesy VELocity).
Plate angular velocities depend on the estimate of the velocity of Earth's centre and on the assignment of sites to plates. Most geodetic estimates of the angular velocities of the plates are determined assuming that Earth's centre is fixed in an International Terrestrial Reference Frame (ITRF), and are therefore subject to errors in the estimate of the velocity of Earth's centre. In ITRF2005 and ITRF2000, Earth's centre is the centre of mass of Earth, oceans and atmosphere (CM); the velocity of CM is estimated by SLR observation of LAGEOS's orbit. Herein we define Earth's centre to be the centre of mass of solid Earth (CE); we determine the velocity of CE by assuming that the portions of plate interiors not near the late Pleistocene ice sheets move laterally as if they were part of a rigid spherical cap. The GEODVEL estimate of the velocity of CE is likely nearer the true velocity of CM than are the ITRF2005 and ITRF2000 estimates because (1) no phenomena can sustain a significant velocity between CM and CE, (2) the plates are indeed nearly rigid (aside from vertical motion) and (3) the velocity of CM differs between ITRF2005 and ITRF2000 by an unacceptably large speed of 1.8 mm yr−1. The velocity of Earth's centre in GEODVEL lies between that of ITRF2000 and that of ITRF2005, with the distance from ITRF2005 being about twice that from ITRF2000. Because the GEODVEL estimates of uncertainties in plate angular velocities account for uncertainty in the velocity of Earth's centre, they are more realistic than prior estimates of uncertainties.
GEODVEL differs significantly from all prior global sets of relative plate angular velocities determined from space geodesy. For example, the 95 per cent confidence limits for the angular velocities of GEODVEL exclude those of REVEL (Sella et al.) for 34 of the 36 plate pairs that can be formed between any two of the nine plates with the best-constrained motion. The median angular velocity vector difference between GEODVEL and REVEL is 0.028° Myr−1, which is up to 3.1 mm yr−1 on Earth's surface. GEODVEL differs the least from the geodetic angular velocities that Altamimi et al. determine from ITRF2005. GEODVEL's 95 per cent confidence limits exclude 11 of 36 angular velocities of Altamimi et al., and the median difference is 0.015° Myr−1.
GEODVEL differs significantly from nearly all relative plate angular velocities averaged over the past few million years, including those of NUVEL-1A. The difference of GEODVEL from updated 3.2 Myr angular velocities is statistically significant for all but two of 36 angular velocities with a median difference of 0.063° Myr−1. Across spreading centres, eight have slowed down while only two have sped up. We conclude that plate angular velocities over the past few decades differ significantly from the corresponding angular velocity averaged over the past 3.2 Myr.Numéro de notice : A2010-656 Affiliation des auteurs : LAREG+Ext (1991-2011) Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/j.1365-246X.2009.04463.x Date de publication en ligne : 01/03/2010 En ligne : https://doi.org/10.1111/j.1365-246X.2009.04463.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=91734
in Geophysical journal international > vol 180 n° 3 (March 2010) . - pp 913 - 960[article]Documents numériques
en open access
The angular velocities of the plates ... - pdf éditeurAdobe Acrobat PDF Impact of loading effects on determination of the International Terrestrial Reference Frame / Xavier Collilieux in Advances in space research, vol 45 n° 1 ([04/01/2010])
[article]
Titre : Impact of loading effects on determination of the International Terrestrial Reference Frame Type de document : Article/Communication Auteurs : Xavier Collilieux , Auteur ; Zuheir Altamimi , Auteur ; David Coulot , Auteur ; Tonie M. van Dam, Auteur ; Jim Ray, Auteur Année de publication : 2010 Article en page(s) : pp 144 - 154 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes de référence et réseaux
[Termes IGN] effet de charge
[Termes IGN] International Terrestrial Reference Frame
[Termes IGN] modèle linéaire
[Termes IGN] série temporelleRésumé : (Auteur) The International Terrestrial Reference Frame (ITRF), as a realization of the International Terrestrial Reference System (ITRS), is represented by a set of station positions and linear velocities. They are intended to be used as regularized coordinates to which some corrections should be added to access instantaneous coordinates. The latest ITRS realization is the ITRF2005, which has integrated time series of station positions to form long-term solutions for the four space geodetic techniques. Currently, a purely linear model is used to parameterize station displacements in the estimation process, plus occasional discontinuities in case of earthquakes or equipment changes. However the input data have been derived without applying surface loading models and so surface loading effects are supposed to be embedded in the coordinates as measured quantities. We evaluate the effect of applying a posteriori loading corrections, which include the effect of atmospheric, non-tidal ocean, and continental water loading, to time series of positions estimated from Satellite Laser Ranging (SLR), Very Long Baseline Interferometry (VLBI), and Global Positioning System (GPS) data. We notice that they reduce about 50% or more of the annual signals in the translation and scale parameter time series of the SLR and VLBI techniques, except in SLR Z translation. In general, the estimated secular frame definition is negligibly affected and estimated positions and velocities are not significantly modified for stations that have accumulated a large number of observations. A multi-technique combination of such derived frames allows concluding that, for some cases, loading model corrections might degrade co-located station coordinates almost as much as they benefit them. However, most significant improvement of the estimated secular coordinates is observed for stations with less than 100 estimated positions as demonstrated with a multi-technique combination. Numéro de notice : A2010-640 Affiliation des auteurs : LAREG+Ext (1991-2011) Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.asr.2009.08.024 Date de publication en ligne : 01/09/2009 En ligne : https://doi.org/10.1016/j.asr.2009.08.024 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=90717
in Advances in space research > vol 45 n° 1 [04/01/2010] . - pp 144 - 154[article]Estimation of crustal vertical movements with GPS in a geocentric frame, within the framework of the TIGA project / Alvaro Santamaria Gomez (2010)PermalinkEtude des erreurs systématiques liées à la détermination du géocentre par les mesures DORIS / Marie-Line Gobinddass (2010)PermalinkPermalinkGlobal optimization of core station networks for space geodesy: application to the referencing of the SLR EOP with respect to ITRF / David Coulot in Journal of geodesy, vol 84 n° 1 (January 2010)PermalinkPermalinkPermalinkSpace-time reference systems for monitoring global change and for precise navigation / Axel Nothnagel (2010)PermalinkUnderstanding sea-level rise and variability, ch 9. Geodetic observations and global reference frame contributions to understanding sea-level rise and variability / Geoffrey Blewitt (2010)PermalinkPermalinkLocal effects of redundant terrestrial and GPS-based tie vectors in ITRF-like combinations / Claudio Abbondanza in Journal of geodesy, vol 83 n° 11 (November 2009)PermalinkLocal effects of redundant terrestrial and GPS-based tie vectors in ITRF-like combinations / Claudio Abbondanza in Journal of geodesy, vol 83 n° 11 (November 2009)PermalinkDPOD2005: An extension of ITRF2005 for Precise Orbit Determination / Pascal Willis in Advances in space research, vol 44 n° 5 (1 September 2009)PermalinkRates of sea‐level change over the past century in a geocentric reference frame / Guy Wöppelmann in Geophysical research letters, vol 36 n° 12 (June 2009)PermalinkGlobal geodetic observing system for geohazards and global change / Hans-Peter Plag in Géosciences, n° 9 (avril 2009)PermalinkProjet et réalisation d'un SIG géophysique autour de composants libres : le catalogue des tremblements de terre de magnitude jusqu'à 5 / Anonyme in Géomatique expert, n° 68 (01/04/2009)PermalinkEPN reference frame alignment: consistency of the station positions / Juliette Legrand in Bulletin of geodesy and geomatics BGG, vol 68 n° 1 (March 2009)PermalinkIGS contribution to the ITRF / Zuheir Altamimi in Journal of geodesy, vol 83 n° 3-4 (March - April 2009)PermalinkThe International Global navigation satellite systems Service (IGS): development and achievements / Gerhard Beutler in Journal of geodesy, vol 83 n° 3-4 (March - April 2009)PermalinkPermalinkImpact of the network effect on the origin and scale: case study of Satellite Laser Ranging / Xavier Collilieux (2009)PermalinkInternational Laser Ranging Service (ILRS) 2007-2008 annual report / Carey E. Noll (2009)PermalinkIntroduction aux systèmes de références terrestres / Xavier Collilieux (2009)PermalinkPermalinkPermalinkPermalinkThe international Doris service, IDS activity report, January 2006 - December 2008 / Pierre Tavernier (2009)PermalinkPermalinkTerrestrial reference frame implementation in global GPS analysis at TIGA ULR consortium / Guy Wöppelmann in Physics and chemistry of the Earth (A/B/C), vol 33 n° 3-4 ([01/05/2008])PermalinkPermalinkAnalyse des séries temporelles de positions des stations de géodésie spatiale : application au repère international de référence terrestre (ITRF) / Xavier Collilieux (2008)PermalinkPermalinkLocal ties, VLBI-GPS eccentricities and combination of geodetic reference frames / Claudio Abbondanza (2008)PermalinkPermalinkPermalinkPermalinkITRF2005: A new release of the International Terrestrial Reference Frame based on time series of station positions and Earth Orientation Parameters / Zuheir Altamimi in Journal of geophysical research : Solid Earth, vol 112 n° 9 (September 2007)PermalinkGeocentric sea-level trend estimates from GPS analyses at relevant tide gauges world-wide / Guy Wöppelmann in Global and Planetary Change, vol 57 n° 3-4 (June 2007)PermalinkAnalysis of a possible future degradation in the DORIS geodetic results related to changes in the satellite constellation / Pascal Willis in Advances in space research, vol 39 n° 10 (May 2007)PermalinkDORIS satellite phase center determination and consequences on the derived scale of the Terrestrial Reference Frame / Pascal Willis in Advances in space research, vol 39 n° 10 (May 2007)PermalinkChamp de vitesses de l'ITRF, propriétés cinématiques de la croute terrestre et condition de non rotation globale / Juliette Legrand (2007)PermalinkInternational Laser Ranging Service (ILRS) 2005-2006 annual report / Carey E. Noll (2007)PermalinkThe International Terrestrial Reference System, Galileo and other Global Navigation Satellite System / Claude Boucher (2007)PermalinkDORIS contribution to ITRF2005 / Zuheir Altamimi in Journal of geodesy, vol 80 n° 8-11 (November 2006)PermalinkError analysis of weekly station coordinates in the DORIS network / Simon D.P. Williams in Journal of geodesy, vol 80 n° 8-11 (November 2006)PermalinkPlate kinematic of Nubia-Somalia using combined DORIS and GPS solution / Jean-Mathieu Nocquet in Journal of geodesy, vol 80 n° 8-11 (November 2006)PermalinkThe international DORIS service: genesis and early achievements / Gilles Tavernier in Journal of geodesy, vol 80 n° 8-11 (November 2006)PermalinkTwenty years of evolution for the DORIS permanent network: from its initial deployment to its renovation / Hervé Fagard in Journal of geodesy, vol 80 n° 8-11 (November 2006)PermalinkA new combined European permanent network station coordinates solution / Natalia Panafidina in Journal of geodesy, vol 80 n° 7 (October 2006)PermalinkCrustal motion and deformation monitoring of the Canadian landmass / Joseph A. Henton in Geomatica, vol 60 n° 2 (June 2006)PermalinkGlobal geodetic observing system: considerations for the geodetic network infrastructure / Michael Pearlman in Geomatica, vol 60 n° 2 (June 2006)PermalinkPermalinkCumul de mesures de télémétrie laser sur satellites / Arnaud Pollet (2006)PermalinkPermalinkLooking for systematic error in scale from Terrestrial Reference Frames derived from DORIS data / Pascal Willis (2006)PermalinkPermalinkPermalinkSystèmes de référence terrestres / Zuheir Altamimi (2006)PermalinkDORIS as a potential part of a Global Geodetic Observing System / Pascal Willis in Journal of geodynamics, vol 40 n° 4-5 (November - December 2005)PermalinkDefining a DORIS core network for Jason-1 precise orbit determination based on ITRF2000 : methods and realization / Pascal Willis in Journal of geodesy, vol 79 n° 6-7 (September - October 2005)PermalinkTerrestrial Reference Frames effects on global sea level rise determination from Topex-Poseidon altimetric data / Laurent Morel in Advances in space research, vol 36 n° 3 (March 2005)PermalinkThe International DORIS Service / Gilles Tavernier in Advances in space research, vol 36 n° 3 (March 2005)PermalinkEstimation des paramètres de transformation entre différentes versions de l'ITRF / P. Nouaille-Degorce (2005)PermalinkPermalinkPermalinkInternational Laser Ranging Service (ILRS) 2003-2004 annual report / Michael Pearlman (2005)PermalinkSurveying co-located space-geodetic instruments for ITRF computation / Pierguido Sarti in Journal of geodesy, vol 78 n° 3 (October 2004)PermalinkLa géodésie française et mondiale : une évolution considérable en 25 ans / Michel Kasser in XYZ, n° 100 (septembre - novembre 2004)PermalinkCelebrating a decade of the International GPS Service, Workshop & Symposium 2004 / Michael Meindl (2004)PermalinkPermalinkIGS reference frames: status and future improvements / Jim Ray (2004)PermalinkPermalinkPermalinkStatus of AFREF Project / Jim Ray (2004)PermalinkTests of IGS Reference Frame Stability / Zuheir Altamimi (2004)PermalinkDiscussion on how to express a regional GPS solution in the ITRF / Zuheir Altamimi (01/12/2003)PermalinkA note on frame transformations with applications to geodetic datums / T. Soler in GPS solutions, vol 7 n° 1 (May 2003)PermalinkPermalinkPermalinkReference frame activity: combination of national (RGP) and regional (regal) permanent networks solutions with euref-epn and ITRF 2000 / Jean-Mathieu Nocquet (2003)PermalinkTectonique des plaques et rebond post-glaciaire / Juliette Legrand (2003)PermalinkThe impact of a No-Net-Rotation Condition on ITRF2000 / Zuheir Altamimi in Geophysical research letters, vol 30 n° 2 (Jauary 2003)PermalinkThe SLR Contribution to the ITRF / Zuheir Altamimi (2003)PermalinkITRF2000: A new release of the International Terrestrial Reference Frame for earth science applications / Zuheir Altamimi in Journal of geophysical research : Solid Earth, vol 107 n° 10 (October 2002)PermalinkContribution de la télémétrie laser à la nouvelle représentation du système de référence terrestre et à la géodynamique / David Coulot in Bulletin d'information de l'Institut géographique national, n° 73 (septembre 2002)PermalinkITRF2000 / Zuheir Altamimi in Bulletin d'information de l'Institut géographique national, n° 73 (septembre 2002)PermalinkNew trends for the realization of the international terrestrial reference system / Zuheir Altamimi in Advances in space research, vol 30 n° 2 (July 2002)PermalinkPermalinkReport on the Symposium of the IAG Subcommission for Europe (EUREF) held in Ponta Delgada , 5-8 June 2002 & reports of the EUREF technical working group, EUREF publication n° 12 / Joao Agria Torres (2002)PermalinkLes calculs de l'altitude du Mont Blanc / Alain Harmel in Géomètre, vol 2002 n° 12 (décembre 2001)PermalinkIntraplate deformation in western Europe deduced from an analysis of the International Terrestrial Reference Frame 1997 / Jean-Mathieu Nocquet in Journal of geophysical research : Solid Earth, vol 106 n° 6 (June 2001)PermalinkTowards an Integrated Global Geodetic Observing System (IGGOS). Quality analysis of some IGS weekly combined solutions with respect to ITRF / Zuheir Altamimi (01/03/2001)PermalinkPermalinkITRF97 and quality analysis of IGS reference stations / Zuheir Altamimi (2001)PermalinkOn the datum quality of a continental ITRF96-BASED reference network in antarctica / S. Schön (2001)PermalinkRecent results of the international terrestrial reference frame / Zuheir Altamimi (2001)PermalinkPreliminary analysis of the ITRF2000 / Claude Boucher (01/10/2000)PermalinkDeutsche Beiträge zu GPS-Kampagnen des Scientific Committee on Antarctic Research (SCAR) 1995-1998 / R. Dietrich (2000)PermalinkPermalinkPermalinkIGS international GLONASS experiment IGEX 98 workshop proceedings, September 13-14, 1999, Nashville, Tennessee, USA / J.A. Slater (2000)PermalinkPermalinkPermalinkStatus and program 1999-2003, Commission 8, International Coordination of Space Techniques for Geodesy and Geodynamics (CSTG) / Hermann Drewes (2000)PermalinkAnalytical and numerical methods in gravity field modelling of ideal and real masses / Dimitrios Tsoulis (1999)PermalinkDéveloppement de techniques d'analyse pour la construction d'un modèle de plaques tectoniques basé sur l'ITRF / F. Regnier (1999)PermalinkPermalinkMonitoring geocenter and scale variations using Doris data: monthly and weekly comparisons toward ITRF references / Pascal Willis (1999)PermalinkLes positions des stations du réseau GPS permanent / M. Suing (1999)PermalinkProceedings of the workshop on the Italian GPS permanent network. Matera 10-11 avril 1997 / F. Vespe (1999)PermalinkRapport sur les travaux géodésiques exécutés de 1995 à 1999 présenté à la 22e assemblée générale de l'Union Géodésique et Géophysique Internationalee de l'Union Géodésique et Géophysique Internationale / Commission géodésique suisse (1999)PermalinkPermalinkPermalinkThe impact of El Nino and other low-frequency signals on Earth rotation and global Earth systems parameters / David A. Salstein (1999)PermalinkPermalinkPreliminary investigation on erroneous ITRF station coordinates on the DORIS tracking network / Laurent Morel (15/10/1998)PermalinkTerrestrial reference frame differences for Topex Poseidon / Laurent Morel (15/10/1998)PermalinkL'ITRF96 : nouvelle génération de réalisation du Système International de Référence Terrestre / Zuheir Altamimi in Bulletin d'information de l'Institut géographique national, n° 69 (octobre 1998)PermalinkMarégraphie et géodésie spatiale : bilan d'un travail de recherche sur leur synergie / Guy Wöppelmann in Bulletin d'information de l'Institut géographique national, n° 69 (octobre 1998)PermalinkLe repère international de référence terrestre ITRF96 / Zuheir Altamimi (04/05/1998)Permalink1998 Analysis center workshop proceedings, Darmstadt, February 9-11, 1998 / John M. Dow (1998)PermalinkEstimation de la qualité des solutions DORIS soumises à l'IERS entre 1995 et 1997 / Zuheir Altamimi (1998)PermalinkÉtude du champ de vitesse de l'ITRF96 / Patrick Sillard (1998)PermalinkITRF time series pilot experiment / Patrick Sillard (1998)PermalinkRapport final du centre d'analyse EUVN à l'Institut Géographique National France / Didier Maillard (1998)PermalinkRelating global and regional terrestrial reference frames [for] IAG Symposium IGGOS, Munich, 5 - 9 october 1998 / Claude Boucher (1998)PermalinkResource information, October 1998 / International GPS service for geodynamics (1998)PermalinkResults and analysis of the ITRF96 / Claude Boucher (1998)PermalinkStatus of ITRF97 : received solutions, preprocessing, preliminary analysis / Claude Boucher (1998)PermalinkThe International Terrestrial Reference Frame: current results and quality assessment / Claude Boucher (1998)PermalinkThe ITRF96, realization of the International Terrestrial Reference System / Claude Boucher (03/09/1997)PermalinkCombinaison de jeux de coordonnées de géodésie spatiale : un exemple type d'estimation des composantes de la variance / Patrick Sillard (1997)PermalinkDefinition and realization of the International Celestial Reference System by VLBI astrometry of extragalactic objects / C. Ma (1997)PermalinkL'ITRF96 : méthode de calcul et résultats / Patrick Sillard (1997)PermalinkPrésentation du LAREG au Groupe Géodésie du CST et aux Journées de la Recherche, Marne-la-Vallée, 11 mars 1997 / Claude Boucher (1997)PermalinkLe repère international de référence terrestre / Claude Boucher in XYZ, n° 70 (décembre 1997 - février 1998)PermalinkImprovement of the transformation between ITRF and Doppler-realized WGS84 / Patrick Sillard in Journal of geodesy, vol 70 n° 11 (September 1996)PermalinkInternational Terrestrial Reference Frame / Claude Boucher in GPS world, vol 7 n° 9 (September 1996)PermalinkITRF and geodynamics / Claude Boucher (03/06/1996)PermalinkAnalyses préalables à l'ITRF 94 / Patrick Sillard (1996)PermalinkÉvaluation des nouveaux modèles géopotentiels GSFC-DMA / Claude Boucher (1996)PermalinkPreliminary analysis for ITRF-C1 solution / Patrick Sillard (1996)PermalinkResults and analysis of the ITRF94 / Claude Boucher (1996)PermalinkSome preliminary results on monthly solutions / Patrick Sillard (1996)PermalinkThe international terrestrial reference frame : results and quality assessment / Zuheir Altamimi (1996)PermalinkNew strategy for the realization of the International Terrestrial Reference System / Claude Boucher (14/07/1995)PermalinkPreliminary analysis of the International Terrestrial Reference Frame 1994 (ITRF 94) / Zuheir Altamimi (14/07/1995)PermalinkDORIS and IERS terrestrial reference frame : open questions and comments / Pascal Willis (1995)PermalinkDORIS, nouvelle technique de l'IERS : compte-rendu d'activité / Pascal Willis (1995)PermalinkITRF Workshop / Claude Boucher (1995)PermalinkProceedings of the Japanese symposium on GPS / K. Teruyuki (1995)PermalinkLe système de référence terrestre de l'IERS : ITRF93 et perspectives / Zuheir Altamimi (1995)PermalinkThe International Terrestrial Reference Frame: proposal for an improved strategy / Claude Boucher (1995)PermalinkIntercomparison of recent Doris solutions in the scope of IERS (Terrestrial Frame and Earth Rotation) / Claude Boucher (01/04/1994)PermalinkContributions of Doris to the IERS : overview of existing solutions / Claude Boucher (21/03/1994)PermalinkStatus of the IERS Terrestrial Reference Frame activities / Claude Boucher (31/01/1994)PermalinkDensification of the IERS terrestrial reference frame through regional GPS networks / James F. Zumberge (1994)PermalinkEtat des performances Doris pour la localisation / Claude Boucher (1994)PermalinkEvaluation des jeux de coordonnées Doris par inter-comparaisons et combinaisons globales : perspectives d'insertion dans l'IERS / Jean-Philippe Dufour (1994)PermalinkProposal to include Doris as a new technique in IERS / Claude Boucher (1994)PermalinkResults and analysis of the ITRF93 / Zuheir Altamimi (1994)PermalinkThe realizations of the International Terrestrial Reference System (ITRS): a challenge for a joint IERS-IGS solution, vol 1. Communication / Claude Boucher (1994)PermalinkThe realizations of the International Terrestrial Reference System (ITRS): a challenge for a joint IERS-IGS solution, vol 2. Transparents / Claude Boucher (1994)PermalinkThe RRF network: a national densification of the ITRF for France / Pascal Willis (1994)PermalinkEtude de la qualité du positionnement Doris par inter-comparaisons et combinaisons globales / Claude Boucher (08/06/1993)PermalinkComparisons between ITRF91 and recent Doris solutions / Jean-Philippe Dufour (11/05/1993)PermalinkStatus report on the IERS Terrestrial Reference Frame / Claude Boucher (11/05/1993)PermalinkContribution of IGS 92 to the Terrestrial Reference Frame / Claude Boucher (1993)PermalinkContributions of space geodesy to geodynamics / D.E. Smith (1993)PermalinkDevelopment of a Conventional Terrestrial Reference Frame / Claude Boucher (1993)PermalinkProceedings of the 1993 IGS (International GPS Service for Geodynamics) workshop / Gerhard Beutler (1993)PermalinkThe IERS Terrestrial Reference Frame and its extensions by IGS and DORIS / Claude Boucher (13/10/1992)PermalinkThe Worldwide centimetric terrestrial reference frame and its associated velocity field / Zuheir Altamimi (01/09/1992)PermalinkITRF 91 and its associated velocity field / Claude Boucher (1992)PermalinkThe IERS GPS terrestrial reference frame / Claude Boucher (1992)PermalinkThe IERS terrestrial reference system / Claude Boucher (22/10/1991)PermalinkRealization of the IERS Terrestrial Reference System / Zuheir Altamimi (11/08/1991)PermalinkITRF 89 and other realizations of the IERS terrestrial reference system for 1989 / Claude Boucher (1991)PermalinkITRF 90 and other realizations of the IERS terrestrial reference system for 1990 / Claude Boucher (1991)PermalinkPermalinkEvolution of the realizations of the terrestrial reference system done by the BIH and IERS (1984-1988) / Claude Boucher (1990)PermalinkPermalinkReference systems related to GPS / Claude Boucher (20/11/1989)PermalinkThe initial IERS terrestrial reference frame / Claude Boucher (1989)PermalinkRattachement de marégraphes au système géodésique mondial BTS par les systèmes GPS et Doris / Pascal Willis (1988)PermalinkTowards an improved realization of the BIH terrestrial frame / Claude Boucher (31/07/1985)PermalinkProceedings of the International Conference on Earth rotation and the Terrestrial Reference Frame, July 31 - August 2, 1985, Colombus, Ohio, 1. Volume 1 / Ivan I. Mueller (1985)PermalinkMERIT - COTES [Conventional Terrestrial Reference System] joint working groups - MERIT campaign / International union of geodesy and geophysics (1982)PermalinkFree geometric adjustment of the SECOR equatorial network (solution SECOR-27) / Ivan I. Mueller (1973)PermalinkDensification of the world satellite triangulation network in South America with the PC-1000 camera (geometric triangulation) / Aeronautical chart and information center (1971)PermalinkEine Studie über den Aufbau eines räumlichen geodätischen Netzes aus terrestrischen Beobachtungen / H. Heilbronner (1968)Permalink