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Description and evaluation of DTRF2014, JTRF2014 and ITRF2014 / Zuheir Altamimi (2020)  

Public Titre : Description and evaluation of DTRF2014, JTRF2014 and ITRF2014 Type de document : Rapport Auteurs : Zuheir Altamimi , Éditeur scientifique ; Wolfgang R. Dick, Éditeur scientifique Editeur : Francfort sur le Main : Bundesamt für Kartographie und Geodäsie Année de publication : 2020 Collection : IERS Technical note, ISSN 1019-4568 num. 40 Importance : 170 p. Format : 21 x 30 cm ISBN/ISSN/EAN : 978-3-86482-137-0 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes de référence et réseaux [Termes IGN] International Terrestrial Reference Frame Note de contenu : Foreword / Zuheir Altamimi 1-- DTRF2014: DGFI-TUM realization of the International Terrestrial Reference System (ITRS) / Mathis Bloßfeld, Manuela Seitz, Detlef Angermann, and Florian Seitz 2-- JTRF2014: Analysis, Results and Comparisons to ITRF2014 and DTRF2014 / Claudio Abbondanza, Toshio Michael Chin, Richard S. Gross, Michael B. Heflin, Jay W. Parker, Benedikt S. Soja, Tonie M. van Dam, and Xiaoping WuI 3-- TRS Center evaluation of DTRF2014 and JTRF2014 with respect to ITRF2014 / Zuheir Altamimi, Paul Rebischung, Xavier Collilieux, and Laurent Métivier 4-- Comparison of latest ITRS realizations: ITRF2014, JTRF2014 and DTRF2014 / Detlef Angermann, Mathis Bloßfeld, Manuela Seitz, and Sergei Rudenko 5-- A comparison of the DTRF2014, ITRF2014, and JTRF2014 solutions using DORIS / Guilhem Moreaux, Hugues Capdeville, Claudio Abbondanza, Mathis Bloßfeld, Jean-Michel Lemoine, and Pascale Ferrage 6-- Assessment of DTRF2014 and ITRF2014 by Satellite Laser Ranging / José Rodríguez 7-- ITRS realizations and their impact on VLBI combined EOP and Scale / Sabine Bachmann and Daniela Thaller Numéro de notice : 17623 Affiliation des auteurs : UMR IPGP-Géod+Ext (2020- ) Thématique : POSITIONNEMENT Nature : Recueil / ouvrage collectif nature-HAL : RappRech DOI : sans Date de publication en ligne : 20/03/2020 En ligne : http://www.iers.org/TN40 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=97123

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• Description and evaluation of DTRF2014, JTRF2014 and ITRF2014, ch. 3. ITRS Center evaluation of DTRF2014 and JTRF2014 with respect to ITRF2014 / Zuheir Altamimi (2020)  

Description and evaluation of DTRF2014, JTRF2014 and ITRF2014, ch. 3. ITRS Center evaluation of DTRF2014 and JTRF2014 with respect to ITRF2014 / Zuheir Altamimi (2020)  

Public contenu dans Description and evaluation of DTRF2014, JTRF2014 and ITRF2014 / Zuheir Altamimi (2020)   Titre de série : Description and evaluation of DTRF2014, JTRF2014 and ITRF2014, ch. 3 Titre : ITRS Center evaluation of DTRF2014 and JTRF2014 with respect to ITRF2014 Type de document : Chapitre/Contribution Auteurs : Zuheir Altamimi , Auteur ; Paul Rebischung , Auteur ; Xavier Collilieux , Auteur ; Laurent Métivier , Auteur Editeur : Francfort sur le Main : Bundesamt für Kartographie und Geodäsie Année de publication : 2020 Collection : IERS Technical note, ISSN 1019-4568 num. 40 Projets : 1-Pas de projet / Importance : pp 71 - 78 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes de référence et réseaux [Termes IGN] International Terrestrial Reference Frame Résumé : (auteur) The three reference frame solutions used the same input data submit-ted by the IERS Technique Centers (IDS, IGS, ILRS and IVS) for the ITRF2014 computation, provided in the form of time series of station positions and Earth Orientation Parameters (EOPs). The reader may refer to the following publications for more details regarding the technique solutions: IDS: Moreaux et al., 2016, IGS: Rebischung et al.,2016, ILRS: Luceri and Pavlis, 2016, IVS: Bachmann et al., 2015 and Nothnagel et al., 2015. Numéro de notice : H2020-005 Affiliation des auteurs : UMR IPGP-Géod (2020- ) Thématique : POSITIONNEMENT Nature : Chapître / contribution nature-HAL : ChRappRech DOI : sans Date de publication en ligne : 20/03/2020 En ligne : https://www.iers.org/SharedDocs/Publikationen/EN/IERS/Publications/tn/TechnNote4 [...] Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=97124

Analysis and results of ITRF2014 / Zuheir Altamimi (2017)  

Public Titre : Analysis and results of ITRF2014 Type de document : Rapport Auteurs : Zuheir Altamimi , Auteur ; Paul Rebischung , Auteur ; Laurent Métivier , Auteur ; Xavier Collilieux , Auteur Editeur : Francfort sur le Main : Bundesamt für Kartographie und Geodäsie Année de publication : 2017 Collection : IERS Technical note, ISSN 1019-4568 num. 38 Importance : 54 p. Format : 21 x 30 cm Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes de référence et réseaux [Termes IGN] analyse de données [Termes IGN] International Terrestrial Reference Frame [Termes IGN] International Terrestrial Reference System [Termes IGN] point de liaison (géodésie) [Termes IGN] qualité des données [Termes IGN] réseau géodésique [Termes IGN] série temporelle [Termes IGN] station permanente Résumé : (Auteur) The ITRF2014 is an improved realization of the International Terrestrial Reference System (ITRS) and is demonstrated to be of higher quality than the past ITRF versions. It involves two main innovations dealing with the modeling of station non-linear motions, namely seasonal (annual and semi-annual) signals present in the time series of station positions and post-seismic deformations for 124 sites that were subject to major earthquakes. It is achieved through a two-step procedure: (1) stacking the time series of station positions and Earth Orientation Parameters (EOPs) provided by the four IERS Technique Centers (TC); (2) combining the long-term solutions as obtained in step 1, together with local ties in co-location sites. The two-step procedure makes use of full variance-covariance information provided in SINEX format. The TC solutions incorporated in the ITRF2014 combination are free from any external constraints, thus preserving the actual space geodesy estimates of station positions and EOPs. The ITRF2014 origin is defined in such a way that it has zero translations and translation rates with respect to the mean Earth center of mass, as defined by the SLR station positions time series. Its scale is defined by zero scale factor and zero scale rate with respect to the mean of VLBI and SLR long-term solutions as obtained by stacking their respective time series. The ITRF2014 orientation (at epoch 2010.0) and its rate are aligned to the ITRF2008 using 127 stations of high geodetic quality. The ITRF2014 includes the positions and velocities of 1499 stations located at 975 sites. Figure 1 shows the coverage of these sites, underlying the co-located space geodesy techniques. This technical note describes the main ITRF2014 products: station positions and velocities, the post fit residuals of the least squares adjustment as well as the transformation parameters between ITRF2014 and ITRF2008. The main technical procedure used to generate the ITRF2014, a thorough discussion of its quality as well as most important geodetic and geophysical results were published in Altamimi et al. [2016], appended to this Technical Note. Note de contenu : 1 Summary 2 ITRF2014 input data 2.1 Space geodesy solutions 2.2 Local ties in co-location sites 3 ITRF2014 data analysis 3.1 Combination model 3.2 ITRF2014 frame definition 4 ITRF2014 results 4.1 ITRF2014 origin and scale 4.2 ITRF2014 products 4.3 Transformation parameters between ITRF2014 and ITRF2008 4.4 Consistency between local ties and space geodesy estimates 5 Access to the ITRF2014 files 5.1 ITRF2014 SINEX files 5.2 ITRF2014 other files 5.3 Post-seismic deformations Numéro de notice : 17489 Affiliation des auteurs : LASTIG LAREG (2012-mi2018) Autre URL associée : http://www.iers.org/TN38 Thématique : POSITIONNEMENT Nature : Rapport d'étude technique nature-HAL : RappRech DOI : sans Date de publication en ligne : 07/04/2017 En ligne : https://www.iers.org/IERS/EN/Publications/TechnicalNotes/tn38.html;jsessionid=2D [...] Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=89945

IGN best practice for surveying instrument reference points at ITRF co-location sites / Jean-Claude Poyard (2017)  

Public Titre : IGN best practice for surveying instrument reference points at ITRF co-location sites Type de document : Rapport Auteurs : Jean-Claude Poyard, Auteur ; Xavier Collilieux , Auteur ; Jean-Michaël Muller , Auteur ; Bruno Garayt , Auteur ; Jérôme Saunier , Auteur Editeur : Francfort sur le Main : Bundesamt für Kartographie und Geodäsie Année de publication : 2017 Collection : IERS Technical note, ISSN 1019-4568 num. 39 Importance : 45 p. Format : 21 x 30 cm ISBN/ISSN/EAN : 978-3-86482-129-5 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes de référence et réseaux [Termes IGN] co-positionnement [Termes IGN] International Terrestrial Reference Frame [Termes IGN] point de liaison (géodésie) Résumé : (auteur) [préface] Current global reference frames such as the International Terrestrial Reference Frames (ITRF) are the result of a combination of space geodetic technique measurements. This combination fully relies on the knowledge of the relative positions (or local tie vectors) between space geodetic instrument reference points on ground at co-location sites where several instruments are operating. These vectors are usually determined by standard surveying methods using topometry, levelling and Global Navigation Satellite System (GNSS) observations. In order to determine coordinates at the millimeter level with these methods, many cautions and an adequate methodology need to be followed by field surveyors and data analysists. This document aims at summarizing the IGN best practice to perform local tie survey measurements and to process and archive associated data and results. Indeed, IGN surveyors have been involved in local tie measurements at many multi-technique co-location sites during the last two decades. In charge of performing local tie surveys at DORIS stations since the nineties, IGN benefited from NASA experience thanks to joint surveys at Hartebeesthoek and Sheshan in 2003. Since that time, nine other specific surveys involving more than 3 different technique instruments have been carried out in addition to other DO-RIS/GNSS co-located sites. This document was initially written for IGN internal use but has been reorganized to be available to any person or group who wishes to learn from our experience in surveying multi-technique sites. Numéro de notice : 17499 Affiliation des auteurs : IGN (2012-2019) Thématique : POSITIONNEMENT Nature : Rapport d'étude technique nature-HAL : RappRech DOI : sans En ligne : https://www.iers.org/IERS/EN/Publications/TechnicalNotes/tn39.html?nn=94912 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=89951

Analysis and results of ITRF2008 / Zuheir Altamimi (2012)    

Public Titre : Analysis and results of ITRF2008 Type de document : Rapport Auteurs : Zuheir Altamimi , Auteur ; Xavier Collilieux , Auteur ; Laurent Métivier , Auteur Editeur : Francfort sur le Main : Bundesamt für Kartographie und Geodäsie Année de publication : 2012 Collection : IERS Technical note, ISSN 1019-4568 num. 37 Importance : 54 p. Format : 21 x 30 cm ISBN/ISSN/EAN : 978-3-86482-046-5 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes de référence et réseaux [Termes IGN] analyse de données [Termes IGN] géodésie spatiale [Termes IGN] International Terrestrial Reference Frame [Termes IGN] International Terrestrial Reference System [Termes IGN] mise à jour [Termes IGN] qualité des données [Termes IGN] réseau géodésique [Termes IGN] série temporelle [Termes IGN] station permanente Index. décimale : 30.10 Systèmes de référence et réseaux géodésiques Résumé : (Auteur) The ITRF2008 is an improved realization of the International Terrestrial Reference System (ITRS) and is demonstrated to be of higher quality than the past ITRF versions. It is achieved in two-step procedure: (1) stacking the time series of station positions and Earth Orientation Parameters (EOPs) provided by four IERS Technique Centers (TC); (2) combining the longterm solutions as obtained in step 1, together with local ties in co-location sites. The two step procedure makes use of full variance-covariance information provided inSINEX format. The TC solutions incorporated in the ITRF2008 combination are free from any external constraints, thus preserving the actual space geodesy estimates of station positions, velocities and EOPs. The ITRF2008 origin is defined in such a way that it has zero translations and translation rates with respect to the mean Earth center of mass, averaged by the SLR station positions time series. Its scale is defined by nullifying the scale factor and its rate with respect to the mean of VLBI and SLR long-term solutions as obtained by stacking their respective time series. The ITRF2008 orientation (at epoch 2005.0) and its rate are aligned to the ITRF2005 using 179 stations of high geodetic quality. The ITRF2008 includes the positions and velocities of 934 stations located at 580 sites. [...] Note de contenu : 1. ITRF2008 input data 1.1. Space geodesy solutions 1.2. Local ties in co-location sites 2. ITRF2008 data analysis 2.1. Combination model 2.2. ITRF2008 frame definition 3.ITRF2008 Results 3.1. ITRF2008 origin and scale 3.2. ITRF2008 adjusted parameters 3.3. Transformation Parameters Between ITRF2008 and ITRF2005 3.4. Consistency between local ties and space geodesy estimates 4. Access to the ITRF2008 files References Appendix A1. ITRF2008 tie and space geodesy discrepancies A2 . ITRF2008 Article A3. Description of Technique Center solutions Numéro de notice : 15774 Affiliation des auteurs : LASTIG LAREG (2012-mi2018) Thématique : POSITIONNEMENT Nature : Rapport de recherche DOI : sans En ligne : https://www.iers.org/IERS/EN/Publications/TechnicalNotes/tn37.html?nn=94912 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=62774

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