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Homogeneous reprocessing of the EUREF permanent network : first experiences and comparisons / A. Kenyeres in Bulletin of geodesy and geomatics BGG, vol 68 n° 3 (October 2009)

Public [article]  inBulletin of geodesy and geomatics BGG > vol 68 n° 3 (October 2009) . - pp 207 - 218 Titre : Homogeneous reprocessing of the EUREF permanent network : first experiences and comparisons Type de document : Article/Communication Auteurs : A. Kenyeres, Auteur ; Mariusz Figurski, Auteur ; P. Kaminski, Auteur ; et al., Auteur Année de publication : 2009 Article en page(s) : pp 207 - 218 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes de référence et réseaux [Termes IGN] CATREF [Termes IGN] centre de phase [Termes IGN] données géodésiques [Termes IGN] réseau géodésique permanent [Termes IGN] réseau permanent EUREF [Termes IGN] série temporelle [Termes IGN] traitement de données GNSS Résumé : (Auteur) The GPS analysis strategies, the applied models and software have been considerably changed since the global (IGS - International GNSS Service) and regional (EPN - EUREF Permanent Network) CORS networks are operational. All changes brought along temporal inhomogeneities in the estimated parameters, most apparently in the coordinate time series. After the introduction of the absolute phase centre variation (PCV) models of the satellite and ground GPS antennae, the complete re-analysis of the historical measurements could not be postponed. Within the IGS the re-analysis is now in progress and it will be followed by a coordinated re-processing of the EPN observations from 1996 on. In preparation of the EPN reprocessing a pilot re-analysis has been done at the Military University of Technology (MUT) in Poland covering the complete EPN dataset and similar work has been started at the Royal Observatory of Belgium (ROB). The target of this work was to assess the required resources, the status and completeness of the database and to quantify the improvement gained by the reprocessing. Using the CATREF software (Altamimi et al. 2004) two cumulative solutions have been created by stacking the standard and the reprocessed weekly EPN SINEX solutions. In this paper, the first analysis of the estimated coordinates, velocities and the residual time series is presented. We detected 10-30% improvement in the weekly weighted RMS, we got smoother time series with smaller coordinate repeatability and a more «ITRF2005-conform» velocity field. The results highly support the need for a complete (from global to local level) GPS reprocessing and the establishment of a new ITRS realization in agreement with the GPS absolute PCV models. Numéro de notice : A2009-566 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=77993 [article]

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