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EPN reference frame alignment: consistency of the station positions / Juliette Legrand in Bulletin of geodesy and geomatics BGG, vol 68 n° 1 (March 2009)

Public [article]  inBulletin of geodesy and geomatics BGG > vol 68 n° 1 (March 2009) . - pp 19 - 34 Titre : EPN reference frame alignment: consistency of the station positions Type de document : Article/Communication Auteurs : Juliette Legrand, Auteur ; Carine Bruyninx, Auteur Année de publication : 2009 Article en page(s) : pp 19 - 34 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de géodésie spatiale [Termes IGN] cohérence des données [Termes IGN] Global Navigation Satellite System [Termes IGN] International Terrestrial Reference Frame [Termes IGN] réseau géodésique terrestre [Termes IGN] réseau permanent EUREF [Termes IGN] station de référence Résumé : (Auteur) In this paper, different approaches to tie a GNSS network to a conventional reference frame, using minimal constraints have been investigated. We created and analysed regional (European) and global cumulative solutions, used both the IGS05 and ITRF2005 as datum, tested different sets of transformation parameters in the minimal constraints, and used different sets of reference stations for the datum definition. Due to the correlation of the Helmert parameters in a regional network, each of the standard geocentric approaches originally dedicated to tie global networks to a reference frame, has shown deficiencies. It was demonstrated that regional solutions can show biases (up to the cm-level) with respect to each other and we conclude that at the regional level, the choice between the IGS05 or ITRF2005, the selection of the reference station set and the number of parameters used to apply the minimal constraints is crucial. In comparison, global solutions are much more stable and agree within the 2 mm-level. Numéro de notice : A2009-354 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29984 [article]

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