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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)
[article]
Titre : Evaluation of the impact of atmospheric pressure loading modeling on GNSS data analysis Type de document : Article/Communication Auteurs : Rolf Dach, Auteur ; Johannes Böhm , Auteur ; Simon Lutz, Auteur ; Peter Steigenberger, Auteur ; Gerhard Beutler, Auteur Année de publication : 2011 Article en page(s) : pp 75 - 91 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes IGN] analyse de données
[Termes IGN] données GNSS
[Termes IGN] impact sur les données
[Termes IGN] International GNSS Service
[Termes IGN] série temporelle
[Termes IGN] signal GNSS
[Termes IGN] surcharge atmosphérique
[Termes IGN] variation saisonnièreRésumé : (Auteur) In recent years, several studies have demonstrated the sensitivity of Global Navigation Satellite System (GNSS) station time series to displacements caused by atmospheric pressure loading (APL). Different methods to take the APL effect into account are used in these studies: applying the corrections from a geophysical model on weekly mean estimates of station coordinates, using observation-level corrections during data analysis, or solving for regression factors between the station displacement and the local pressure. The Center for Orbit Determination in Europe (CODE) is one of the global analysis centers of the International GNSS Service (IGS). The current quality of the IGS products urgently asks to consider this effect in the regular processing scheme. However, the resulting requirements for an APL model are demanding with respect to quality, latency, and—regarding the reprocessing activities—availability over a long time interval (at least from 1994 onward). The APL model of Petrov and Boy (J Geophys Res 109:B03405, 2004) is widely used within the VLBI community and is evaluated in this study with respect to these criteria. The reprocessing effort of CODE provides the basis for validating the APL model. The data set is used to solve for scaling factors for each station to evaluate the geophysical atmospheric non-tidal loading model. A consistent long-term validation of the model over 15 years, from 1994 to 2008, is thus possible. The time series of 15 years allows to study seasonal variations of the scaling factors using the dense GNSS tracking network of the IGS. By interpreting the scaling factors for the stations of the IGS network, the model by (2004) is shown to meet the expectations concerning the order of magnitude of the effect at individual stations within the uncertainty given by the GNSS data processing and within the limitations due to the model itself. The repeatability of station coordinates improves by 20% when applying the effect directly on the data analysis and by 10% when applying a post-processing correction to the resulting weekly coordinates compared with a solution without taking APL into account. Numéro de notice : A2011-067 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s00190-010-0417-z Date de publication en ligne : 22/10/2010 En ligne : https://doi.org/10.1007/s00190-010-0417-z Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30848
in Journal of geodesy > vol 85 n° 2 (February 2011) . - pp 75 - 91[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 266-2011021 RAB Revue Centre de documentation En réserve L003 Disponible GNSS and the Ionosphere: What's in Store for the Next Solar Maximum? / A. Jensen in GPS world, vol 22 n° 2 (February 2011)
[article]
Titre : GNSS and the Ionosphere: What's in Store for the Next Solar Maximum? Type de document : Article/Communication Auteurs : A. Jensen, Auteur ; C. Mitchell, Auteur Année de publication : 2011 Article en page(s) : pp 40 - 48 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes IGN] dégradation du signal
[Termes IGN] ionosphère
[Termes IGN] perturbation ionosphérique
[Termes IGN] qualité du signal
[Termes IGN] signal aléatoire
[Termes IGN] signal GNSS
[Termes IGN] vent solaireRésumé : (Editeur) Although the sun can become disturbed at any time, solar activity is correlated with the approximately 11-year cycle of spots on the sun's surface. We are just coming out of a minimum in the solar cycle and headed for the next maximum, predicted to occur around the middle of 2013. How significantly will GNSS users be affected? In this month's column, two ionosphere experts tell us what might be in store. Numéro de notice : A2011-058 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30839
in GPS world > vol 22 n° 2 (February 2011) . - pp 40 - 48[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 067-2011021 RAB Revue Centre de documentation En réserve L003 Disponible GGSP : Realisation and maintenance of the Galileo terrestrial reference frame / Gerd Gendt in Advances in space research, vol 47 n° 2 ([15/01/2011])
[article]
Titre : GGSP : Realisation and maintenance of the Galileo terrestrial reference frame Type de document : Article/Communication Auteurs : Gerd Gendt, Auteur ; Zuheir Altamimi , Auteur ; Rolf Dach, Auteur ; Wolfgang Söhne, Auteur Année de publication : 2011 Article en page(s) : pp 174 - 185 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes IGN] Galileo
[Termes IGN] Galileo Geodetic Service Provider
[Termes IGN] Galileo Terrestrial Reference Frame
[Termes IGN] International Terrestrial Reference Frame
[Termes IGN] orbitographieRésumé : (Auteur) The realisation and maintenance of a Galileo Terrestrial Reference Frame (GTRF) is the main function of the Galileo Geodetic Service Provider (GGSP). The GTRF shall be compatible with the latest International Terrestrial Reference Frame (ITRF) within a precision level of 3 cm (2 sigma). The connection to the ITRF is realized and validated by stations of the International GNSS Service (IGS) and by geodetic local ties to stations equipped with other geodetic techniques. It is demonstrated that this GTRF can be maintained by including the Galileo Signal-in-Space data, once Galileo reaches its operational stage.
The GGSP will also provide additional products, such as Earth Rotation Parameters, satellites orbits, clock corrections for satellites and stations, which will be offered to the Galileo user community to have most precise access to the GTRF and will be used to monitor the accuracy of the corresponding Galileo Mission Segment.
The GGSP was built up in time, and for a final demonstration the full system was operated for an interval of 6 months. During that time also microwave data from the two active GIOVE satellites were used.
The GGSP Consortium followed the most up to date IGS standards of weekly processing during seven monthly campaigns (November 2006 to June 2008) and a continuous processing from September 2008 to February 2009 delivering several versions of the GTRF. The latest GTRF solution (GTRF09v01) has an RMS position difference with respect to the ITRF2005 computed over the 71 common stations of 1.1 and 2.9 mm in the horizontal and vertical components, respectively. The RMS velocity differences are 0.3 and 0.6 mm/y, respectively. The GGSP GPS satellite orbits and clock corrections agree with the IGS Final products at a level of 5–11 mm and 0.02–0.03 ns, respectively.Numéro de notice : A2011-588 Affiliation des auteurs : LAREG+Ext (1991-2011) Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.asr.2010.02.001 Date de publication en ligne : 06/02/2010 En ligne : https://doi.org/10.1016/j.asr.2010.02.001 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=90663
in Advances in space research > vol 47 n° 2 [15/01/2011] . - pp 174 - 185[article]
[article]
Titre : Preface Type de document : Article/Communication Auteurs : Pascal Willis , Auteur Année de publication : 2011 Projets : 1-Pas de projet / Article en page(s) : pp 173 - 173 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes IGN] Galileo
[Termes IGN] Global Navigation Satellite SystemNuméro de notice : A2011-589 Affiliation des auteurs : IGN (1940-2011) Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.asr.2010.11.003 Date de publication en ligne : 05/11/2010 En ligne : https://doi.org/10.1016/j.asr.2010.11.003 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=90664
in Advances in space research > vol 47 n° 2 [15/01/2011] . - pp 173 - 173[article]vol 22 n° 1 - January 2011 (Bulletin de GPS world)
[n° ou bulletin]
Titre : vol 22 n° 1 - January 2011 Type de document : Périodique Année de publication : 2011 Importance : 60 p. Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale Numéro de notice : 067-201101 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Numéro de périodique Permalink : https://documentation.ensg.eu/index.php?lvl=bulletin_display&id=13622 [n° ou bulletin]ContientExemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 067-2011011 RAB Revue Centre de documentation En réserve L003 Disponible Combined analysis of observations from different global navigation satellite systems / Michael Meindl (2011)PermalinkEfficient estimation of variance and covariance components : A case study for GPS stochastic model evaluation / B. Li in IEEE Transactions on geoscience and remote sensing, vol 49 n° 1 Tome 1 (January 2011)PermalinkEtalonnage des satellites GPS pour l'ITRF2008 / Xavier Collilieux (2011)PermalinkPermalinkPermalinkPermalinkAn inter-comparison of zenith tropospheric delays derived from DORIS and GPS data / Olivier Bock in Advances in space research, vol 46 n° 12 (15/12/2010)PermalinkDORIS/SLR POD modeling improvements for Jason-1 and Jason-2 / Nikita P. Zelensky in Advances in space research, vol 46 n° 12 (15/12/2010)PermalinkPermalinkIDS contribution to ITRF2008 / Jean-Jacques Valette in Advances in space research, vol 46 n° 12 (15/12/2010)Permalink