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On measurements of lands and constructions, Volume in honor of Prof. D. Vlachos. Theoretical foundations of ITRF determination. The algebraic and the kinematic approach / Zuheir Altamimi (2013) 

Public Titre de série : On measurements of lands and constructions, Volume in honor of Prof. D. Vlachos Titre : Theoretical foundations of ITRF determination. The algebraic and the kinematic approach Type de document : Chapitre/Contribution Auteurs : Zuheir Altamimi , Auteur ; Athanasios Dermanis, Auteur Editeur : Thessaloniki : University of Thessaloniki Année de publication : 2013 Importance : 22 p. Note générale : Publication of the School of Rural & Surveying Engineering, Aristotle University of Thessaloniki Langues : Anglais (eng) Résumé : (auteur) The minimal constraints required for the definition of the reference system in the ITRF formulation are derived for both the one-step approach (simultaneous stacking of coordinate time series for all available space techniques) as well as for the currently implemented two-step approach of stacking for each technique separately and combination of the derived station initial coordinates and velocities. Two types of minimal constraints are studied, the usual algebraic ones related to the variation of the unknown parameters under a change of the reference system known as inner constraints and kinematic ones based on the choice of a reference system with respect to which the apparent variation of station coordinates is minimized. It is shown that under mild conditions on the approximate parameter values used in the linearization of the observation equations the two approaches, algebraic and kinematic one, become identical. Numéro de notice : H2013-012 Affiliation des auteurs : LASTIG LAREG+Ext (2012-mi2018) Nature : Chapître / contribution DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=101203

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