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Affiner la recherche Interroger des sources externesGNSS scale determination using calibrated receiver and Galileo satellite antenna patterns / Arturo Villiger in Journal of geodesy, vol 94 n° 9 (September 2020)
Titre : GNSS scale determination using calibrated receiver and Galileo satellite antenna patterns Type de document : Article/Communication Auteurs : Arturo Villiger, Auteur ; Rolf Dach, Auteur ; Stefan Schaer, Auteur ; et al., Auteur Année de publication : 2020 Article en page(s) : n° 93 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes de référence et réseaux
[Termes descripteurs IGN] antenne Galileo
[Termes descripteurs IGN] centre de phase
[Termes descripteurs IGN] chambre anéchoïque
[Termes descripteurs IGN] étalonnage d'instrument
[Termes descripteurs IGN] International Terrestrial Reference Frame
[Termes descripteurs IGN] métadonnées
[Termes descripteurs IGN] positionnement par ITGB
[Termes descripteurs IGN] positionnement par télémétrie laser sur satellite
[Termes descripteurs IGN] réseau géodésique terrestre
[Termes descripteurs IGN] robotRésumé : (auteur) The reference frame of a global terrestrial network is defined by the origin, the orientation and the scale. The origin of the ITRF2014 is defined by the ILRS long-term solution, the orientation by no-net rotation conditions w.r.t. the previous reference frame (ITRF2008), and the scale by the mean values from global VLBI and SLR solution series (Altamimi et al. in J Geophys Res Solid Earth 121:6109–6131, 2016). With the release of the Galileo satellite antenna phase center offsets (PCO) w.r.t. the satellites center of mass (GSA in Galileo IOV and FOC satellite metadata, 2019) and the availability of new ground antenna calibrations for GNSS receivers, based on anechoic chamber measurements or on robot calibrations, GNSS global network solutions qualify to contribute to the scale determination of terrestrial networks, as well. Our analysis is based on global multi-GNSS solutions of the years 2017 and 2018 and may be seen as “proof of concept” for the contribution of GNSS data to the scale determination of the terrestrial reference frame. In a first step, the currently used Galileo PCO estimations (Steigenberger et al. in J Geod 90:773–785, 2016) are compared to the released PCO values, which show discrepancies on the decimeter-level. Eventually, the published Galileo PCOs are used in an experimental solution as known values. GNSS-specific PCOs are estimated, as well, for GPS and GLONASS, together with the “standard” parameters set up in global GNSS solutions. From the estimated network coordinates, a time series of daily scale parameters of the terrestrial network is extracted, which shows an offset of the order of 1 ppb (parts per billion, corresponding to a height difference of 6.4 mm on the Earth’s surface) w.r.t. to the ITRF2014 network and an annual variation with an amplitude of about 0.3 ppb. Numéro de notice : A2020-539 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s00190-020-01417-0 date de publication en ligne : 05/09/2020 En ligne : https://doi.org/10.1007/s00190-020-01417-0 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=95739
in Journal of geodesy > vol 94 n° 9 (September 2020) . - n° 93[article]
Titre : IGS International GNSS Service technical report 2018 Type de document : Rapport Auteurs : Arturo Villiger, Editeur scientifique ; Rolf Dach, Editeur scientifique Editeur : Bern : Astronomical Institute Année de publication : 2019 Importance : 228 p. Format : 21 x 30 cm Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes descripteurs IGN] Global Navigation Satellite SystemRésumé : (Editeur) Applications of the Global Navigation Satellite Systems (GNSS) to Earth Sciences are numerous. The International GNSS Service (IGS), a voluntary federation of government agencies, universities and research institutions, combines GNSS resources and expertise to provide the highest–quality GNSS data, products, and services in order to support high–precision applications for GNSS–related research and engineering activities.
This IGS Technical Report 2018 includes contributions from the IGS Governing Board, the Central Bureau, Analysis Centers, Data Centers, station and network operators, working groups, pilot projects, and others highlighting status and important activities, changes and results that took place and were achieved during 2018.
This report is available in full-resolution electronic version at http://ftp.aiub.unibe.ch/users/villiger/2018_techreport.pdf.Note de contenu : 1. Executive Groups
2. Analysis Centers
3. Data Centers
4. Working Groups, Pilot ProjectsNuméro de notice : 17113 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Rapport DOI : 10.7892/boris.130408 En ligne : http://ftp.aiub.unibe.ch/users/villiger/2018_techreport.pdf Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=93307 Documents numériques
en open access
IGS International GNSS Service technical report 2018Adobe Acrobat PDF
Titre : Dependency of geodynamic parameters on the GNSS constellation Type de document : Article/Communication Auteurs : Stefano Scaramuzza, Auteur ; Rolf Dach, Auteur ; Gerhard Beutler, Auteur ; Daniel Arnold, Auteur ; Andreja Sušnik, Auteur ; Adrian Jäggi, Auteur Année de publication : 2018 Article en page(s) : pp 93 - 104 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie physique
[Termes descripteurs IGN] constellation GLONASS
[Termes descripteurs IGN] constellation GPS
[Termes descripteurs IGN] géocentre
[Termes descripteurs IGN] mouvement du pôle
[Termes descripteurs IGN] orbite
[Termes descripteurs IGN] série temporelleRésumé : (Auteur) Significant differences in time series of geodynamic parameters determined with different Global Navigation Satellite Systems (GNSS) exist and are only partially explained. We study whether the different number of orbital planes within a particular GNSS contributes to the observed differences by analyzing time series of geocenter coordinates (GCCs) and pole coordinates estimated from several real and virtual GNSS constellations: GPS, GLONASS, a combined GPS/GLONASS constellation, and two virtual GPS sub-systems, which are obtained by splitting up the original GPS constellation into two groups of three orbital planes each. The computed constellation-specific GCCs and pole coordinates are analyzed for systematic differences, and their spectral behavior and formal errors are inspected. We show that the number of orbital planes barely influences the geocenter estimates. GLONASS’ larger inclination and formal errors of the orbits seem to be the main reason for the initially observed differences. A smaller number of orbital planes may lead, however, to degradations in the estimates of the pole coordinates. A clear signal at three cycles per year is visible in the spectra of the differences between our estimates of the pole coordinates and the corresponding IERS 08 C04 values. Combinations of two 3-plane systems, even with similar ascending nodes, reduce this signal. The understanding of the relation between the satellite constellations and the resulting geodynamic parameters is important, because the GNSS currently under development, such as the European Galileo and the medium Earth orbit constellation of the Chinese BeiDou system, also consist of only three orbital planes. Numéro de notice : A2018-012 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s00190-017-1047-5 En ligne : https://doi.org/10.1007/s00190-017-1047-5 Format de la ressource électronique : URL Article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=89055
in Journal of geodesy > vol 92 n° 1 (January 2018) . - pp 93 - 104[article]
Titre : IGS International GNSS Service technical report 2017 Type de document : Rapport Auteurs : Arturo Villiger, Editeur scientifique ; Rolf Dach, Editeur scientifique Editeur : Bern : Astronomical Institute Année de publication : 2018 Importance : 228 p. Format : 21 x 30 cm Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes descripteurs IGN] Global Navigation Satellite SystemRésumé : (Editeur) Applications of the Global Navigation Satellite Systems (GNSS) to Earth Sciences are numerous. The International GNSS Service (IGS), a federation of government agencies, universities and research institutions, plays an increasingly critical role in support of GNSS–related research and engineering activities. This Technical Report includes contributions from the IGS Governing Board, the Central Bureau, Analysis Centers, Data Centers, station and network operators, working groups, pilot projects, and others highlighting status and important activities, changes and results that took place and were achieved during 2017. Note de contenu : 1. Executive Groups
- Governing Board / G. Johnston
- Central Bureau
2. Analysis Centers
Analysis Center Coordinator,
- Center for Orbit Determination in Europe (CODE)
- Natural Resources Canada (NRCan)
- European Space Operations Center (ESOC)
- GeoForschungsZentrum (GFZ)
- Geodetic Observatory Pecný (GOP), No report submitted
- Centre National d’Etudes Spatiales/Collecte Localisation satellites (CNES/CLS)
- Jet Propulsion Laboratory (JPL)
- Massachusetts Institute of Technology (MIT) No report submitted
- National Geodetic Survey (NGS)
- Scripps Institution of Oceanography (SIO) No report submitted
- United States Naval Observatory (USNO)
- University of Wuhan (WHU)
- EUREF Permanent Network (EPN)
- SIRGAS
3. Data Centers
- Infrastructure Committee
- Crustal Dynamics Data Information System (CDDIS)
- Scripps Institution of Oceanography (SIO), No report submitted
- Institut National de l’Information Géographique et Forestière (IGN), No report submitted
- Korean Astronomy and Space Science Institute (KASI) No report submitted
4. Working Groups, Pilot Projects
- Antenna Working Group 133
- Bias and Calibration Working Group
- Clock Products Working Group
- Data Center Working Group
- Ionosphere Working Group
- Multi–GNSS Working Group
- Space Vehicle Orbit Dynamics Working Group, No report submitted
- Real–Time Service
- Reference Frame Working Group
- RINEX Working Group
- Tide Gauge Benchmark Monitoring Project
- Troposphere Working GroupNuméro de notice : 17516 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Rapport En ligne : http://ftp://igs.org/pub/resource/pubs/2017_techreport.pdf Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=90518 ContientDocuments numériques
en open access
IGS International GNSS Service technical report 2017Adobe Acrobat PDFRecent activities of the GGOS standing committee on Performance simulations and Architectural Trade-Offs (PLATO) / Benjamin Männel (2018)
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 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 : LAREG+Ext (avant 2012) 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 PermalinkPermalinkPermalinkPermalinkPermalinkPermalinkPermalinkPermalinkPermalinkPermalink
