Centre de documentation
scientifique

On the accuracy assessment of celestial reference frame realizations / Z. Malkin in Journal of geodesy, vol 82 n° 6 (June 2008)  

Public [article]  inJournal of geodesy > vol 82 n° 6 (June 2008) . - pp 325 - 329 Titre : On the accuracy assessment of celestial reference frame realizations Type de document : Article/Communication Auteurs : Z. Malkin, Auteur Année de publication : 2008 Article en page(s) : pp 325 - 329 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes de référence et réseaux [Termes IGN] données ITGB [Termes IGN] estimation de précision [Termes IGN] précision des données [Termes IGN] repère de référence céleste [Termes IGN] système de référence céleste Résumé : (Auteur) The scatter of the celestial pole offset (CPO) time-series obtained from very long baseline interferometry (VLBI) observations is used as a measure of the accuracy of celestial reference frame (CRF) realizations. Several scatter indices (SI), including some proposed for the first time, are investigated. The first SI is based on residual analysis of CPO series with respect to a free core nutation (FCN) model. The second group of SIs includes Allan deviation and its extensions, which allow the treatment of unequally weighted and multidimensional observations. Application of these criteria to several radio source catalogues (RSCs) showed their ability to perform a preliminary assessment of the quality of each RSC. The 2D Allan deviation estimate seems to be the most sensitive measure. The proposed extensions of Allan deviation, weighted and multidimensional, can also be used for the statistical analysis of other time-series. Copyright Springer Numéro de notice : A2008-314 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s00190-007-0181-x En ligne : https://doi.org/10.1007/s00190-007-0181-x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29307 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
266-08051	SL	Revue	Centre de documentation	Revues en salle	Disponible

A new combined European permanent network station coordinates solution / Natalia Panafidina in Journal of geodesy, vol 80 n° 7 (October 2006)  

Public [article]  inJournal of geodesy > vol 80 n° 7 (October 2006) . - pp 373 - 380 Titre : A new combined European permanent network station coordinates solution Type de document : Article/Communication Auteurs : Natalia Panafidina, Auteur ; Z. Malkin, Auteur ; Robert Weber, Auteur Année de publication : 2006 Article en page(s) : pp 373 - 380 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes de référence et réseaux [Termes IGN] coordonnées GPS [Termes IGN] EUREF [Termes IGN] Europe (géographie politique) [Termes IGN] International Terrestrial Reference Frame [Termes IGN] positionnement par GPS [Termes IGN] repère de référence [Termes IGN] réseau géodésique permanent [Termes IGN] réseau permanent EUREF [Termes IGN] station de référence Résumé : (Auteur) The EUREF [International Association of Geodesy (IAG) Reference Frame Sub-Commission for Europe] network of continuously operating GPS stations (EPN) was primarily established for reference frame maintenance, and also plays an important role for geodynamical research in Europe. The main objective of this paper is to obtain an independent homogeneous time series of the EPN station coordinates, which is also available in SINEX format. A new combined solution of the EPN station coordinates was computed. The combination was performed independently for every week, in three steps: (1) the stated constraints on the coordinates were removed from the individual solutions of the Analysis Centers; (2) the de-constrained solutions were aligned to ITRF2000; (3) the resulting solutions were combined using the Helmert blocking technique. All the data from GPS weeks 900 to 1302 (April 1997–December 2004) were used. We investigated in detail the behavior of the transformation parameters aligning the new combined solution to ITRF2000. In general, the time series of the transformation parameters show a good stability in time although small systematic effects can be seen, most likely caused by station instabilities. A comparison of the new combined solution to the official EUREF weekly combined solution is also presented. Copyright Springer Numéro de notice : A2006-450 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s00190-006-0076-2 En ligne : https://doi.org/10.1007/s00190-006-0076-2 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28174 [article]

Exemplaires(2)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
266-06091	RAB	Revue	Centre de documentation	En réserve L003	Disponible
266-06092	RAB	Revue	Centre de documentation	En réserve L003	Disponible