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Auteur Elmar Brockmann |
Documents disponibles écrits par cet auteur (8)
Ajouter le résultat dans votre panier Affiner la recherche Interroger des sources externesAbsolute field calibration for multi-GNSS receiver antennas at ETH Zurich / Daniel Willi in GPS solutions, vol 24 n° 1 (January 2020)
Titre : Absolute field calibration for multi-GNSS receiver antennas at ETH Zurich Type de document : Article/Communication Auteurs : Daniel Willi, Auteur ; Simon Lutz, Auteur ; Elmar Brockmann, Auteur ; Markus Rothacher, Auteur Année de publication : 2020 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes IGN] antenne Galileo
[Termes IGN] antenne GNSS
[Termes IGN] antenne GPS
[Termes IGN] centre de phase
[Termes IGN] données Galileo
[Termes IGN] données GPS
[Termes IGN] données multicapteurs
[Termes IGN] étalonnage au sol
[Termes IGN] étalonnage d'instrument
[Termes IGN] étalonnage des données
[Termes IGN] international GPS service for geodynamics
[Termes IGN] mesurage de phase
[Termes IGN] récepteur GNSS
[Termes IGN] robot
[Termes IGN] signal GNSS
[Termes IGN] Zurich (Suisse)Résumé : (Auteur) ETH Zurich developed an absolute GNSS antenna calibration system based on measurements taken in the field. An industrial robot is used to rotate and tilt the antenna to be calibrated. This procedure ensures good coverage of the antenna hemisphere and reduces systematic errors. The calibration system at ETH Zurich is validated by a direct comparison of the obtained calibrations with calibrations from the anechoic chamber method (University of Bonn) and from another absolute field calibration method (Geo++® GmbH). Calibrations by ETH Zurich agree on the sub-millimeter level with both reference calibrations. A second validation was conducted using real measurements on short baselines. Data were acquired on four stations in direct vicinity and processed using different phase center correction models. The experiment shows that individual corrections of ETH Zurich reduce the residuals in the coordinate domain when compared to type-mean calibrations of the International GNSS Service (IGS). However, residual biases between GPS and Galileo coordinates remain. These biases are efficiently reduced when using the new type-mean calibrations from the IGS that include calibration values for all GNSS, including Galileo. The ETH Zurich calibration system is proven to deliver meaningful calibrations that agree with other calibrations on the millimeter level in the azimuth and elevation domain. The field validation shows evidence that the consistency of the Galileo and GPS calibration should be further enhanced by performing a combined GPS and Galileo analysis, which is not yet implemented. Numéro de notice : A2020-020 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s10291-019-0941-0 Date de publication en ligne : 19/12/2019 En ligne : https://doi.org/10.1007/s10291-019-0941-0 Format de la ressource électronique : URL Article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=94460
in GPS solutions > vol 24 n° 1 (January 2020)[article]
Titre : Implementation of the ETRS89 in Europe: Current Status and Challenges Type de document : Article/Communication Auteurs : Carine Bruyninx, Auteur ; Zuheir Altamimi Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 2015 Collection : International Association of Geodesy Symposia, ISSN 0939-9585 num. 146 Conférence : REFAG 2014, Reference Frames for Applications in Geosciences (IAG 2014 - Commission 1 symposium) 13/10/2014 17/10/2014 Kirchberg Grand Duché du Luxembourg Proceedings Springer Importance : pp 135 - 145 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes de référence et réseaux
[Termes IGN] champ de vitesse
[Termes IGN] densification géodésique
[Termes IGN] European Terrestrial Reference System 1989
[Termes IGN] INSPIRE
[Termes IGN] réseau permanent EUREFRésumé : (auteur) The EUREF (Reference Frame Sub-Commission for Europe) Permanent GNSS Network (EPN) serves as the backbone for the realization of, and access to, the European Terrestrial Reference System (ETRS89). The cumulative site positions and velocities for the EPN stations are used for national ETRS89 densifications and geo-information applications. EUREF has developed specific guidelines through which European countries ask validation of their national ETRS89 densification campaigns. Today, the majority of the European countries has passed this process and a large part of European National Mapping and Cartographic Agencies have officially adopted ETRS89. In addition, ETRS89 plays a fundamental role in INSPIRE (Infrastructure for Spatial Information in the European Community).
In the meantime, some geographical zones are experiencing considerable deformation, degrading the lifetime of their national ETRS89 realizations. In order to derive a cross-boundary European velocity model that can be applied by different countries on top of their validated ETRS89 realization (while keeping consistency with their neighboring countries) the EUREF Technical Working Group has set up two initiatives: the EPN densification project and the EUREF Working Group on Deformation Models.Numéro de notice : C2014-022 Affiliation des auteurs : LASTIG LAREG+Ext (2012-mi2018) Thématique : POSITIONNEMENT Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : 10.1007/1345_2015_130 En ligne : https://doi.org/10.1007/1345_2015_130 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=90681
Titre : EUREF’s contribution to national, European and global geodetic infrastructures Type de document : Article/Communication Auteurs : Johannes Ihde, Auteur ; H. Habrich, Auteur ; M. Sacher, Auteur ; Wolfgang Söhne, Auteur ; Zuheir Altamimi Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 2014 Collection : International Association of Geodesy Symposia, ISSN 0939-9585 num. 139 Conférence : IAG 2011, General Assembly 28/06/2011 02/07/2011 Melbourne Australie Proceedings Springer Importance : pp 189 - 196 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes de référence et réseaux
[Termes IGN] International Terrestrial Reference FrameRésumé : (auteur) The EUREF key infrastructures are the EUREF Permanent GNSS Network (EPN) and the Unified European Levelling Network (UELN). The EPN runs almost 250 Global Navigation Satellite System (GNSS) stations in a well organized environment and serves as the backbone of the realization of and access to the European Terrestrial Reference System (ETRS89) and as contribution to the densification of the International Terrestrial Reference Frame (ITRF2008). The upcoming European navigation system Galileo will be a big challenge for the EPN in sense of upgrading the station network. Almost half of the EPN stations are capable of streaming their data in real-time. To strengthen the robustness of the real-time data and product distribution two additional Ntrip broadcasters were set up at different premises in Europe. The EVRS and the ETRS89 have been adopted by the European Community as coordinate reference systems in INSPIRE for environmental policies, or policies and activities that have an impact on the environment. Numéro de notice : C2011-059 Affiliation des auteurs : LASTIG LAREG+Ext (2012-mi2018) Thématique : POSITIONNEMENT Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : 10.1007/978-3-642-37222-3_24 Date de publication en ligne : 06/10/2013 En ligne : https://doi.org/10.1007/978-3-642-37222-3_24 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=99600
Titre : Monitoring of official national ETRF coordinates on EPN web project for the EUREF TWG [technical working group] Type de document : Article/Communication Auteurs : Elmar Brockmann, Auteur Année de publication : 2010 Article en page(s) : pp 246 - 256 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes de référence et réseaux
[Termes IGN] Europe (géographie politique)
[Termes IGN] European Terrestrial Reference Frame
[Termes IGN] International Terrestrial Reference Frame
[Termes IGN] réseau permanent EUREFRésumé : (Auteur) The EUREF Permanent Network EPN is permanently analyzed by different analysis centers in order to density the international reference frame ITRF and in order to monitor the European reference frame ETRF. Furthermore, the different European countries adopted realizations of the ETRF in the past years and decades. The described project of the EUREF technical working group (TWG) shows for a sub-set of 14 European countries, how homogeneous the different national reference frames are realized compared to a consistently computed multi-annual solution published by EUREF in Dec., 2008. A collection of all officially used national ETRF coordinates for the EPN stations and its publication on the EPN web pages is a by-product of this project. Numéro de notice : A2010-598 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31342
in Bulletin of geodesy and geomatics BGG > vol 69 n° 2 - 3 (December 2010) . - pp 246 - 256[article]Réservation
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Titre : Status of the European Reference Frame (EUREF) Type de document : Article/Communication Auteurs : Joao Agria Torres, Auteur ; Zuheir Altamimi Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 2009 Collection : International Association of Geodesy Symposia, ISSN 0939-9585 num. 133 Conférence : IAG 2007, International Association of Geodesy General Assembly 28/06/2011 02/07/2011 Perugia Italie Proceedings Springer Importance : pp 47 - 56 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes de référence et réseaux
[Termes IGN] EUREF
[Termes IGN] repère de référence
[Termes IGN] réseau permanent EUREFRésumé : (auteur) EUREF (www.euref.eu) is the IAG (International Association of Geodesy) Reference Frame Sub-commission for Europe integrated in Sub-Commission 1.3 – Regional Reference Frames, of Commission 1 – Reference Frames, of the IAG. The activities carried out by EUREF are related to the definition, realization and maintenance of the European Reference Frame. EUREF focuses on both the geo-spatial and the vertical components and has the participation of almost all the European countries. This paper presents an overview of the status and recent developments of EUREF core projects, which are aimed at upgrading European-wide geodetic reference systems to support both scientific and continental geo-referencing activities. Numéro de notice : C2009-030 Affiliation des auteurs : LAREG+Ext (1991-2011) Thématique : POSITIONNEMENT Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : 10.1007/978-3-540-85426-5_6 En ligne : https://doi.org/10.1007/978-3-540-85426-5_6 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=90693 PermalinkCombination of solutions for geodetic and geodynamic applications of the Global Positioning System (GPS) / Elmar Brockmann (1996)
PermalinkProceedings of the 1993 IGS (International GPS Service for Geodynamics) workshop / Gerhard Beutler (1993)
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