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Time-series analysis of geodetic reference frame aligned to International Terrestrial Reference Frame / Tae-Suk Bae in Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography, vol 39 n° 5 ([01/11/2021])  

Public [article]  inJournal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography > vol 39 n° 5 [01/11/2021] . - pp 313 - 319 Titre : Time-series analysis of geodetic reference frame aligned to International Terrestrial Reference Frame Type de document : Article/Communication Auteurs : Tae-Suk Bae, Auteur ; Chang-Ki Hong, Auteur ; Jisun Lee, Auteur ; Zuheir Altamimi , Auteur ; Patrick Sillard , Auteur ; Claude Boucher , Auteur Année de publication : 2021 Projets : 3-projet - voir note / Article en page(s) : pp 313 - 319 Note générale : bibliographie This research was supported by a grant from National R&D Project of “Development of Ground-based Centimeter-level Maritime Precise PNT Technologies” funded by Ministry of Oceans and Fisheries, Korea (20200451). Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes de référence et réseaux [Termes IGN] Corée du sud [Termes IGN] International Terrestrial Reference Frame [Termes IGN] rattachement [Termes IGN] réseau géodésique permanent [Termes IGN] série temporelle Résumé : (auteur) The national geodetic reference frame of Korea was adopted in 2003, which is referenced to ITRF (International Terrestrial Reference Frame) 2000 at the epoch of January 1, 2002. For precise positioning based on the satellites, it should be thoroughly maintained to the newest global reference frame. Other than plate tectonic motion, there are significant events or changes such as earthquakes, antenna replacement, PSD (Post-Seismic Deformation), seasonal variation etc. We processed three years of GNSS (Global Navigation Satellite System) data (60 NGII CORS stations, 51 IGS core stations) to produce daily solutions minimally constrained to ITRF. From the time series of daily solutions, the sites with unexpected discontinuity were identified to set up an event (mostly antenna replacement). The combined solution with minimum constraints was estimated along with the velocity, the offsets, and the periodic signals. The residuals show that the surrounding environment also affects the time series to a certain degree, thus it should be improved eventually. The transformation parameters to ITRF2014 were calculated with stability and consistency, which means the national geodetic reference frame is properly aligned to the global reference frame. Numéro de notice : A2021-943 Affiliation des auteurs : UMR IPGP-Géod+Ext (2020- ) Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueNat DOI : 10.7848/ksgpc.2021.39.5.313 En ligne : https://doi.org/10.7848/ksgpc.2021.39.5.313 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=99483 [article]

Comparison of very long baseline interferometry, GPS, and satellite laser ranging height residuals from ITRF2005 using spectral and correlation methods / Xavier Collilieux in Journal of geophysical research : Solid Earth, vol 112 n° B12 (December 2007)  

Public [article]  inJournal of geophysical research : Solid Earth > vol 112 n° B12 (December 2007) Titre : Comparison of very long baseline interferometry, GPS, and satellite laser ranging height residuals from ITRF2005 using spectral and correlation methods Type de document : Article/Communication Auteurs : Xavier Collilieux , Auteur ; Zuheir Altamimi , Auteur ; David Coulot , Auteur ; Jim Ray, Auteur ; Patrick Sillard , Auteur Année de publication : 2007 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale [Termes IGN] analyse comparative [Termes IGN] corrélation [Termes IGN] données GPS [Termes IGN] données ITGB [Termes IGN] données TLS (télémétrie) [Termes IGN] résidu Résumé : (auteur) For the first time, the ITRF2005 input data are in the form of time series of station positions and Earth orientation parameters, together with full variance-covariance information. The first step of the ITRF2005 analysis consists of rigorously stacking each time series to yield a long-term solution per technique. As a by-product, time series of position residuals contain the nonlinear motion of points over the Earth's surface. In this paper, the height residual time series of very long baseline interferometry (VLBI), Global Positioning System (GPS), and satellite laser ranging (SLR) solutions submitted to ITRF2005 are compared. We note that the interpretation of the ITRF2005 position residual time series as observed physical motions at the various stations is delicate due to the inhomogeneous site distribution. We estimate that the network effect may introduce an averaged scatter of 3 and 2 mm in the VLBI and SLR height residuals, respectively. Although noise levels are different among these three techniques, a common 1.0 cycles per year (cpy) frequency is clearly detected. The GPS height annual signal exhibits significant regional correlations that are confirmed by VLBI and SLR measurements in some colocated sites. Significant power near frequencies 2.00, 3.12, and 4.16 cpy is also detected in the individual GPS height residuals time series as mentioned by Ray et al. (2007). However, neither VLBI nor SLR show any significant signals at these frequencies for colocated sites. The agreement between detrended height time series at colocated sites is quantified using a novel method based on Kalman filtering and on maximum likelihood estimation. The GPS and VLBI measurements are shown to agree fairly well for most of the colocated sites. However, agreement is not generally observed in the GPS and SLR comparisons. A study of the interannual signal at colocated sites indicates that the good correlation cannot be completely attributed to the annual harmonic. Numéro de notice : A2007-660 Affiliation des auteurs : LAREG+Ext (1991-2011) Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1029/2007JB004933 Date de publication en ligne : 28/12/2007 En ligne : https://doi.org/10.1029/2007JB004933 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=102705 [article]

Surveying co-located space-geodetic instruments for ITRF computation / Pierguido Sarti in Journal of geodesy, vol 78 n° 3 (October 2004)  

Public [article]  inJournal of geodesy > vol 78 n° 3 (October 2004) . - pp 210 - 222 Titre : Surveying co-located space-geodetic instruments for ITRF computation Type de document : Article/Communication Auteurs : Pierguido Sarti, Auteur ; Patrick Sillard , Auteur ; Luca Vittuari, Auteur Année de publication : 2004 Article en page(s) : pp 210 - 222 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale [Termes IGN] instrument de géodésie [Termes IGN] International Terrestrial Reference Frame [Termes IGN] modèle géométrique Résumé : (auteur) A new and comprehensive method is presented that can be used for estimating eccentricity vectors between global positioning system (GPS) antennas, doppler orbitography and radiopositioning integrated by satellites (DORIS) antennas, azimuth-elevation (AZ-EL) very long baseline interferometry (VLBI) telescopes, and satellite laser ranging (SLR) and lunar laser ranging (LLR) telescopes. The problem of reference point (RP) definition for these space-geodetic instruments is addressed and computed using terrestrial triangulation and electronic distance measurement (EDM) trilateration. The practical ground operations, the surveying approach and the terrestrial data processing are briefly illustrated, and the post-processing procedure is discussed. It is a geometrically based analytical approach that allows computation of RPs along with a rigorous statistical treatment of measurements. The tight connection between the geometrical model and the surveying procedure is emphasized. The computation of the eccentricity vector and the associated variance–covariance matrix between an AZ-EL VLBI telescope (with or without intersecting axes) and a GPS choke ring antenna is concentrated upon, since these are fundamental for computing the International Terrestrial Reference Frame (ITRF). An extension to RP computation and eccentricity vectors involving DORIS, SLR and LLR techniques is also presented. Numerical examples of the quality that can be reached using the authors’ approach are given. Working data sets were acquired in the years 2001 and 2002 at the radioastronomical observatory of Medicina (Italy), and have been used to estimate two VLBI-GPS eccentricity vectors and the corresponding SINEX files. Numéro de notice : A2004-628 Affiliation des auteurs : IGN+Ext (1940-2011) Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s00190-004-0387-0 Date de publication en ligne : 02/09/2004 En ligne : https://doi.org/10.1007/s00190-004-0387-0 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=102741 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
266-04041	RAB	Revue	Centre de documentation	En réserve L003	Disponible

ITRF2000: From Theory to Implementation / Zuheir Altamimi (2004)  

Public Titre : ITRF2000: From Theory to Implementation Type de document : Article/Communication Auteurs : Zuheir Altamimi , Auteur ; Patrick Sillard , Auteur ; Claude Boucher , Auteur Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 2004 Collection : International Association of Geodesy Symposia, ISSN 0939-9585 num. 127 Conférence : IAG 2003, 5th Hotine-Marussi Symposium on Mathematical Geodesy 17/06/2003 21/06/2003 Matera Italie Proceedings Springer Importance : pp 157 - 163 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes de référence et réseaux [Termes IGN] International Terrestrial Reference Frame [Termes IGN] précision du positionnement Résumé : (auteur) One of the main geodetic activities is to determine positions of points or objects over the Earth surface or nearby space. Meanwhile when dealing with geodetic observations, a certain Terrestrial Reference System (TRS) has to be adopted in which point positions will be expressed. Since there are many ways to realize the adopted TRS, the most challenging issue is to select the “best” one that preserves the actual quality of geodesy observations. Conversely, noting that the observations are, and should remain, insensitive to the adopted theoretical TRS, they should not be altered by the added pseudo observations (termed as constraints) permitting to specify a Terrestrial Reference Frame (TRF) as the “best” realization of the TRS. In this paper we will focus on the main important parameters needed to define a TRF (called datum definition), as well as the current achievement of Space Geodesy techniques, through the activities related to the International Terrestrial Reference Frame (ITRF). The use of minimum constraints approach is emphasized both in case of individual TRS realization by space geodesy techniques and in combination, allowing to precisely define the ITRF datum definition. Some important results of the latest ITRF solution, namely ITRF2000, will be used to illustrate the discussion over two axes: accuracy of the datum definition and the current quality of space geodesy solutions used in the ITRF2000 combination. Numéro de notice : C2003-055 Affiliation des auteurs : LAREG (1991-2011) Thématique : POSITIONNEMENT Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : 10.1007/978-3-662-10735-5_21 Date de publication en ligne : 01/12/2010 En ligne : https://doi.org/10.1007/978-3-662-10735-5_21 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=103038

Arrêté sur les classes de précision applicables aux catégories de travaux topographiques : quelques aspects statistiques [projet d'arrêté, texte soumis au visa du ministre et approuvé par le CNIG] / Patrick Sillard in XYZ, n° 96 (septembre - novembre 2003)

Public [article]  inXYZ > n° 96 (septembre - novembre 2003) . - pp 35 - 42 Titre : Arrêté sur les classes de précision applicables aux catégories de travaux topographiques : quelques aspects statistiques [projet d'arrêté, texte soumis au visa du ministre et approuvé par le CNIG] Type de document : Article/Communication Auteurs : Patrick Sillard , Auteur Année de publication : 2003 Article en page(s) : pp 35 - 42 Langues : Français (fre) Descripteur : [Vedettes matières IGN] Topographie [Termes IGN] écart moyen [Termes IGN] erreur de mesure [Termes IGN] erreur en position [Termes IGN] erreur moyenne arithmétique [Termes IGN] erreur moyenne quadratique [Termes IGN] lever topographique [Termes IGN] précision de localisation [Termes IGN] rattachement au système légal Résumé : (Auteur) Cet article explicite les notions statistiques utilisées dans le texte du futur arrêté sur la précision des levers topographiques effectués en France sur fonds publics. Il explique le choix de la notion d'écart moyen en position, qui a été préféré aux outils plus classiques mais inadaptés comme l'erreur moyenne quadratique. Il explique également l'origine des valeurs numériques et des différentes formules employées dans le texte du futur arrêté. Numéro de notice : A2003-272 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=22567 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
112-03031	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Simulation du champ de pesanteur à partir d'un modèle géologique en trois dimensions : un outil pour l'évaluation des méthodes de calcul de géoïde / Olivier Jamet in Bulletin d'information scientifique et technique de l'IGN, n° 74 (mars 2003)

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The impact of a No-Net-Rotation Condition on ITRF2000 / Zuheir Altamimi in Geophysical research letters, vol 30 n° 2 (Jauary 2003)  

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ITRF2000: 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)  

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Géodésie physique : champ de pesanteur et nivellement, bilan d'activité 2001 / Olivier Jamet in Bulletin d'information de l'Institut géographique national, n° 73 (septembre 2002)

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ITRF2000 / Zuheir Altamimi in Bulletin d'information de l'Institut géographique national, n° 73 (septembre 2002)

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New trends for the realization of the international terrestrial reference system / Zuheir Altamimi in Advances in space research, vol 30 n° 2 (July 2002)  

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AGRET 1999-2001, 3ème colloque AGRET / Patrick Sillard (2002)

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Intraplate 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)  

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A review of algebraic constraints in terrestrial reference frame datum definition / Patrick Sillard in Journal of geodesy, vol 75 n° 2-3 (May 2001)  

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Towards an Integrated Global Geodetic Observing System (IGGOS). Quality analysis of some IGS weekly combined solutions with respect to ITRF / Zuheir Altamimi (01/03/2001)  

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