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Auteur Rolf Dach |
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Impact of loading displacements on SLR-derived parameters and on the consistency between GNSS and SLR results / Krzysztof Sosnica in Journal of geodesy, vol 87 n° 8 (August 2013)
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[article]
Titre : Impact of loading displacements on SLR-derived parameters and on the consistency between GNSS and SLR results Type de document : Article/Communication Auteurs : Krzysztof Sosnica, Auteur ; Daniela Thaller, Auteur ; Rolf Dach, Auteur ; Adrian Jäggi, Auteur ; Gerhard Beutler, Auteur Année de publication : 2013 Article en page(s) : pp 751 - 769 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes de référence et réseaux
[Termes descripteurs IGN] cohérence des données
[Termes descripteurs IGN] effet de charge
[Termes descripteurs IGN] point de liaison (géodésie)
[Termes descripteurs IGN] positionnement par GNSS
[Termes descripteurs IGN] surcharge atmosphérique
[Termes descripteurs IGN] surcharge océanique
[Termes descripteurs IGN] télémétrie laser sur satelliteRésumé : (Auteur) Displacements of the Earth’s surface caused by tidal and non-tidal loading forces are relevant in high-precision space geodesy. Some of the corrections are recommended by the international scientific community to be applied at the observation level, e.g., ocean tidal loading (OTL) and atmospheric tidal loading (ATL). Non-tidal displacement corrections are in general recommended not to be applied in the products of the International Earth Rotation and Reference Systems Service, in particular atmospheric non-tidal loading (ANTL), oceanic and hydrological non-tidal corrections. We assess and compare the impact of OTL, ATL and ANTL on SLR-derived parameters by reprocessing 12 years of SLR data considering and ignoring individual corrections. We show that loading displacements have an influence not only on station long-term stability, but also on geocenter coordinates, Earth Rotation Parameters, and satellite orbits. Applying the loading corrections reduces the amplitudes of annual signals in the time series of geocenter and station coordinates. The general improvement of the SLR station 3D coordinate repeatability when applying OTL, ATL and ANTL corrections are 19.5 %, 0.2 % and 3.3 % respectively, w.r.t. the solutions without loading corrections. ANTL corrections play a crucial role in the combination of optical (SLR) and microwave (GNSS, VLBI, DORIS) space geodetic observation techniques, because of the so-called Blue-Sky effect: SLR measurements can be carried out only under cloudless sky conditions—typically during high air pressure conditions, when the Earth’s crust is deformed, whereas microwave observations are weather-independent. Thus, applying the loading corrections at the observation level improves SLR-derived products as well as the consistency with microwave-based results. We assess the Blue-Sky effect on SLR stations and the consistency improvement between GNSS and SLR solutions when ANTL corrections are included. The omission of ANTL corrections may lead to inconsistencies between SLR and GNSS solutions of up to 2.5 mm for inland stations. As a result, the estimated GNSS–SLR coordinate differences correspond better to the local ties at the co-located stations when applying ANTL corrections. Numéro de notice : A2013-481 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s00190-013-0644-1 date de publication en ligne : 28/05/2013 En ligne : https://doi.org/10.1007/s00190-013-0644-1 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32619
in Journal of geodesy > vol 87 n° 8 (August 2013) . - pp 751 - 769[article]Réservation
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Titre : IGS International GNSS Service technical report 2012 Type de document : Rapport Auteurs : Rolf Dach, Editeur scientifique ; Yoomin Jean, Editeur scientifique Editeur : Bern : Astronomical Institute Année de publication : 2013 Collection : IGS International GNSS Service technical report num. 2012 Importance : 214 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 2012 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 2013. Note de contenu : 1- Executive Reports
The Development of the IGS in 2012 — The Governing Board’s Perspective / U. Hugentobler
Central Bureau / R. Neilan, S. Fisher, R. Khachikyan, J. Ceva, A. Craddock, N. Donnelly, D. Maggert, and G. Walia
2- Analysis Centers
Analysis Center Coordinator / J. Griffiths and K. Choi
Center for Orbit Determination In Europe / R. Dach, S. Schaer, S. Lutz, M. Meindl, H. Bock, E. Orliac, L. Prange, D. Thaller, L. Mervart, A. Jäggi, G. Beutler, E. Brockmann, D. Ineichen, A. Wiget, G. Weber, H. Habrich, J. Ihde, P. Steigenberger, U. Hugentobler
Natural Resources Canada / Y. Mireault, B. Donahue, R. Ghoddousi–Fard, P. Tétreault, F. Lahaye
European Space Operations Centre / T. A. Springer, L. Agrotis, J. Feltens, M. van Kints, N. Romero, F. Dilssner, C. Flohrer, W. Enderle, R. Zandbergen
GeoForschungsZentrum / G. Gendt, M. Ge, T. Nischan, M. Uhlemann, G. Beeskow, A. Brandt
Geodetic Observatory Pecný, No report submitted
Centre National d’Etudes Spatiales/Collecte Localisation Satellites / S. Loyer, F. Perosanz, H. Capdeville, A. Mezerette, F. Mercier, J.-C. Marty
Jet Propulsion Laboratory / S. Desai, W. Bertiger, B. Haines, D. Kuang, C. Selle, A. Sibois, A. Sibthorpe, and J. Weiss
Massachusetts Institute of Technology / T. A. Herring and R. W. King
National Geodetic Survey, No report submitted
Scripps Institution of Oceanography, No report submitted
United States Naval Observatory / C. Hackman, S. Byram, V. Slabinski, and J. Tracey
Wuhan University / C. Shi, M. Li, Q. Zhao, X. Lei, J. Liu
EUREF Permanent Network / C. Bruyninx, H. Habrich, A. Kenyeres, W. Söhne, G. Stangl, C. Völksen
SIRGAS / L. Sánchez
3- Data Centers
Infrastructure Committee / I. Romero
Crustal Dynamics Data Information System / C. Noll
Scripps Institution of Oceanography, No report submitted
Institut National de l’Information Géographique et Forestière / A. Duret, and B. Garayt
Korean Astronomy and Space Science Institute, No report submitted
4- Working Groups, Pilot Projects
Antenna Working Group / R. Schmid
Bias and Calibration Working Group / S. Schaer
Clock Products Working Group, No report submitted
Data Center Working Group / C. Noll
Ionosphere Working Group / A. Krankowski and R. Sieradzki
Multi–GNSS Working Group / O. Montenbruck
Space Vehicle Orbit Dynamics Working Group, No report submitted
Reference Frame Working Group / P. Rebischung, B. Garayt, X. Collilieux, Z. Altamimi
Real–Time Pilot Project / M. Caissy and L. Agrotis
RINEX Working Group / K. MacLeod, L. Agrotis, and R. Dach
Tide Gauge Benchmark Monitoring Project / T. Schöne, R. Bingley, Z. Deng, J. Griffiths, H. Habrich, A. Hunegnaw, M. Jia, M. King, M. Merrifield, G. Mitchum, R. Neilan, C. Noll, E. Prouteau, L. Sánchez, N. Teferle, D. Thaller, P. Tregoning, P. Woodworth, G. Wöppelmann
Troposphere Working Group / C. Hackman and S. ByramNuméro de notice : 17123 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Rapport Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=80359 Documents numériques
en open access
IGS technical report 2012Adobe Acrobat PDF
Titre : IGS International GNSS Service technical report 2011 Type de document : Rapport Auteurs : Michael Meindl, Editeur scientifique ; Rolf Dach, Editeur scientifique ; Yoomin Jean, Editeur scientifique Editeur : Bern : Astronomical Institute Année de publication : 2012 Importance : 214 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 2011 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 2013. Note de contenu : 1- Executive Reports
The Development of the IGS in 2011 — The Governing Board’s Perspective / U. Hugentobler
Central Bureau / S. Fisher, R. Neilan, R. Khachikyan, G. Walia and D. Maggert
2- Analysis Centers
Analysis Center Coordinator, No report submitted
Center for Orbit Determination In Europe / R. Dach, S. Schaer, S. Lutz, M. Meindl, H. Bock, E. Orliac, L. Prange, D. Thaller, L. Mervart, A. Jäggi, G. Beutler, E. Brockmann, D. Ineichen, A. Wiget, G. Weber, H. Habrich, J. Ihde, P. Steigenberger, U. Hugentobler
Natural Resources Canada / B. Donahue, R. Ferland, R. Ghoddousi–Fard, F. Lahaye, Y. Mireault
European Space Operations Centre / T. A. Springer, W. Enderle, L. Agrotis , F. Dilssner, C. Flohrer, F. Pereira, N. Romero, R. Zandbergen
GeoForschungsZentrum / G. Gendt, M. Ge, T. Nischan, M. Uhlemann, G. Beeskow, A. Brandt
Geodetic Observatory Pecný / J. Dousa
Centre National d’Etudes Spatiales/Collecte Localisation Satellites / S. Loyer, F. Perosanz, H. Capdeville, M. Pau, F. Mercier, J.–C. Marty, L. Soudarin
Jet Propulsion Laboratory / S. Desai, W. Bertiger, B. Haines, D. Kuang, C. Selle, A. Sibois, A. Sibthorpe, and J. Weiss
Massachusetts Institute of Technology / T. A. Herring and R. W. King
National Geodetic Survey, No report submitted
Scripps Institution of Oceanography, No report submitted
United States Naval Observatory / C. Hackman, S. Byram, V. Slabinski, and J. Tracey
SIRGAS / L. Sánchez
3- Data Centers
Infrastructure Committee / I. Romero
Crustal Dynamics Data Information System / C. Noll
Scripps Institution of Oceanography, No report submitted
Institut National de l’Information Géographique et Forestière, No report submitted
Korean Astronomy and Space Science Institute, No report submitted
4- Working Groups, Pilot Projects
Antenna Working Group / R. Schmid
Bias and Calibration Working Group / S. Schaer
Data Center Working Group / C. Noll
Global Navigation Satellite Systems Working Group / R. Weber
Ionosphere Working Group / A. Krankowski
Space Vehicle Orbit Dynamics Working Group / M. Ziebart
Reference Frame Working Group / P. Rebischung, B. Garayt, X. Collilieux, Z. Altamimi
Real–Time Pilot Project / M. Caissy and L. Agrotis
RINEX Working Group / K. MacLeod and L. Agrotis
Tide Gauge Benchmark Monitoring Project / T. Schöne, R. Bingley, Z. Deng, J. Griffiths, H. Habrich, M. Jia, M. King, M. Merrifield, G. Mitchum, R. Neilan, C. Noll, L. Sánchez, N. Teferle, D. Thaller, P. Tregoning, P. Woodworth, G. Wöppelmann
Troposphere Working Group / C. Hackman and S. Byram
Clock Products Working Group / K. SeniorNuméro de notice : 17121 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Rapport En ligne : http://ftp://igs.org/pub/resource/pubs/2011_techreport.pdf Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=80360 Documents numériques
en open access
IGS technical report 2011Adobe Acrobat PDFMulti-technique comparison of troposphere zenith delays and gradients during CONT08 / Kamil Teke in Journal of geodesy, vol 85 n° 7 (July 2011)
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[article]
Titre : Multi-technique comparison of troposphere zenith delays and gradients during CONT08 Type de document : Article/Communication Auteurs : Kamil Teke, Auteur ; Johannes Böhm, Auteur ; Tobias Nilsson, Auteur ; Harald Schuh, Auteur ; Peter Steigenberger, Auteur ; Rolf Dach, Auteur ; Robert Heinkelmann, Auteur ; Pascal Willis , Auteur ; et al., Auteur
Année de publication : 2011 Article en page(s) : pp 395 - 413 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes descripteurs IGN] analyse comparative
[Termes descripteurs IGN] données DORIS
[Termes descripteurs IGN] données GPS
[Termes descripteurs IGN] données ITGB
[Termes descripteurs IGN] données WVR
[Termes descripteurs IGN] gradient de troposphère
[Termes descripteurs IGN] retard troposphérique
[Termes descripteurs IGN] troposphèreRésumé : (Auteur) CONT08 was a 15 days campaign of continuous Very Long Baseline Interferometry (VLBI) sessions during the second half of August 2008 carried out by the International VLBI Service for Geodesy and Astrometry (IVS). In this study, VLBI estimates of troposphere zenith total delays (ZTD) and gradients during CONT08 were compared with those derived from observations with the Global Positioning System (GPS), Doppler Orbitography and Radiopositioning Integrated by Satellite (DORIS), and water vapor radiometers (WVR) co-located with the VLBI radio telescopes. Similar geophysical models were used for the analysis of the space geodetic data, whereas the parameterization for the least-squares adjustment of the space geodetic techniques was optimized for each technique. In addition to space geodetic techniques and WVR, ZTD and gradients from numerical weather models (NWM) were used from the European Centre for Medium-Range Weather Forecasts (ECMWF) (all sites), the Japan Meteorological Agency (JMA) and Cloud Resolving Storm Simulator (CReSS) (Tsukuba), and the High Resolution Limited Area Model (HIRLAM) (European sites). Biases, standard deviations, and correlation coefficients were computed between the troposphere estimates of the various techniques for all eleven CONT08 co-located sites. ZTD from space geodetic techniques generally agree at the sub-centimetre level during CONT08, and—as expected—the best agreement is found for intra-technique comparisons: between the Vienna VLBI Software and the combined IVS solutions as well as between the Center for Orbit Determination (CODE) solution and an IGS PPP time series; both intra-technique comparisons are with standard deviations of about 3–6 mm. The best inter space geodetic technique agreement of ZTD during CONT08 is found between the combined IVS and the IGS solutions with a mean standard deviation of about 6 mm over all sites, whereas the agreement with numerical weather models is between 6 and 20 mm. The standard deviations are generally larger at low latitude sites because of higher humidity, and the latter is also the reason why the standard deviations are larger at northern hemisphere stations during CONT08 in comparison to CONT02 which was observed in October 2002. The assessment of the troposphere gradients from the different techniques is not as clear because of different time intervals, different estimation properties, or different observables. However, the best inter-technique agreement is found between the IVS combined gradients and the GPS solutions with standard deviations between 0.2 and 0.7 mm. Numéro de notice : A2011-331 Affiliation des auteurs : IGN+Ext (1940-2011) Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s00190-010-0434-y date de publication en ligne : 27/04/2011 En ligne : https://doi.org/10.1007/s00190-010-0434-y Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31110
in Journal of geodesy > vol 85 n° 7 (July 2011) . - pp 395 - 413[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 266-2011071 RAB Revue Centre de documentation En réserve 3L Disponible Combination of GNSS and SLR observations using satellite co-locations / Daniela Thaller in Journal of geodesy, vol 85 n° 5 (May 2011)
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[article]
Titre : Combination of GNSS and SLR observations using satellite co-locations Type de document : Article/Communication Auteurs : Daniela Thaller, Auteur ; Rolf Dach, Auteur ; Manuela Seitz, Auteur ; et al., Auteur Année de publication : 2011 Article en page(s) : pp 257 - 272 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes de référence et réseaux
[Termes descripteurs IGN] co-positionnement
[Termes descripteurs IGN] données GNSS
[Termes descripteurs IGN] données TLS (télémétrie)
[Termes descripteurs IGN] erreur systématique
[Termes descripteurs IGN] système de référence mondial
[Termes descripteurs IGN] traitement combinéRésumé : (Auteur) Satellite Laser Ranging (SLR) observations to Global Navigation Satellite System (GNSS) satellites may be used for several purposes. On one hand, the range measurement may be used as an independent validation for satellite orbits derived solely from GNSS microwave observations. On the other hand, both observation types may be analyzed together to generate a combined orbit. The latter procedure implies that one common set of orbit parameters is estimated from GNSS and SLR data. We performed such a combined processing of GNSS and SLR using the data of the year 2008. During this period, two GPS and four GLONASS satellites could be used as satellite co-locations. We focus on the general procedure for this type of combined processing and the impact on the terrestrial reference frame (including scale and geocenter), the GNSS satellite antenna offsets (SAO) and the SLR range biases. We show that the combination using only satellite co-locations as connection between GNSS and SLR is possible and allows the estimation of SLR station coordinates at the level of 1–2 cm. The SLR observations to GNSS satellites provide the scale allowing the estimation of GNSS SAO without relying on the scale of any a priori terrestrial reference frame. We show that the necessity to estimate SLR range biases does not prohibit the estimation of GNSS SAO. A good distribution of SLR observations allows a common estimation of the two parameter types. The estimated corrections for the GNSS SAO are 119 mm and -13 mm on average for the GPS and GLONASS satellites, respectively. The resulting SLR range biases suggest that it might be sufficient to estimate one parameter per station representing a range bias common to all GNSS satellites. The estimated biases are in the range of a few centimeters up to 5 cm. Scale differences of 0.9 ppb are seen between GNSS and SLR. Numéro de notice : A2011-244 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s00190-010-0435-x date de publication en ligne : 02/04/2011 En ligne : https://doi.org/10.1007/s00190-010-0435-x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31022
in Journal of geodesy > vol 85 n° 5 (May 2011) . - pp 257 - 272[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 266-2011051 RAB Revue Centre de documentation En réserve 3L Disponible Evaluation of the impact of atmospheric pressure loading modeling on GNSS data analysis / Rolf Dach in Journal of geodesy, vol 85 n° 2 (February 2011)
PermalinkGGSP : Realisation and maintenance of the Galileo terrestrial reference frame / Gerd Gendt in Advances in space research, vol 47 n° 2 ([15/01/2011])
PermalinkImproved constraints on models of glacial isostatic adjustment: A review of the contribution of ground-based geodetic observations / Matt A. King in Surveys in Geophysics, vol 31 n° 5 (September 2010)
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PermalinkGPS, GLONASS, and more: multiple constellation processing in the International GNSS Service / Tim A. Springer in GPS world, vol 21 n° 6 (June 2010)
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