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Estimation of phase center corrections for GLONASS-M satellite antennas / F. Dilssner in Journal of geodesy, vol 84 n° 8 (August 2010)  

Public [article]  inJournal of geodesy > vol 84 n° 8 (August 2010) . - pp 467 - 480 Titre : Estimation of phase center corrections for GLONASS-M satellite antennas Type de document : Article/Communication Auteurs : F. Dilssner, Auteur ; T. Spinger, Auteur ; Claudia Flohrer, Auteur ; John M. Dow, Auteur Année de publication : 2010 Article en page(s) : pp 467 - 480 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement du signal [Termes IGN] antenne GLONASS [Termes IGN] centre de phase [Termes IGN] correction du signal [Termes IGN] International Terrestrial Reference Frame [Termes IGN] mesurage de phase [Termes IGN] positionnement par GNSS [Termes IGN] satellite GLONASS [Termes IGN] station GLONASS [Termes IGN] traitement du signal Résumé : (Auteur) Driven by the comprehensive modernization of theGLONASS space segment and the increased global availability of GLONASS-capable ground stations, an updated set of satellite-specific antenna phase center corrections for the current GLONASS-M constellation is determined by processing 84 weeks of dual-frequency data collected between January 2008 and August 2009 by a worldwide network of 227 GPS-only and 115 combined GPS/GLONASS tracking stations. The analysis is performed according to a rigorous combined multi-system processing scheme providing full consistency between the GPS and the GLONASS system. The solution is aligned to a realization of the International Terrestrial Reference Frame 2005. The estimated antenna parameters are compared with the model values currently used within the International GNSS Service (IGS). It is shown that the z-offset estimates are on average 7 cm smaller than the corresponding IGS model values and that the block-specific mean value perfectly agrees with the nominal GLONASS-M z-offset provided by the satellite manufacturer. The existence of azimuth-dependent phase center variations is investigated and uncertainties in the horizontal offset estimates due to mathematical correlations and yaw-attitude modeling problems during eclipse seasons are addressed. Finally, it is demonstrated that the orbit quality benefits from the updated GLONASS-M antenna phase center model and that a consistent set of satellite antenna z-offsets for GPS and GLONASS is imperative to obtain consistent GPS- and GLONASS-derived station heights. Numéro de notice : A2010-439 Affiliation des auteurs : non IGN Thématique : IMAGERIE/POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s00190-010-0381-7 Date de publication en ligne : 08/04/2010 En ligne : https://doi.org/10.1007/s00190-010-0381-7 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30632 [article]

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