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GGOS 2006, The Global Geodetic Observing System Workshop, Towards a Consistent Geodetic Foundation for Earth Observations 08/10/2006 09/10/2006 Munich Allemagne Program with papers
nom du congrès :
GGOS 2006, The Global Geodetic Observing System Workshop, Towards a Consistent Geodetic Foundation for Earth Observations
début du congrès :
08/10/2006
fin du congrès :
09/10/2006
ville du congrès :
Munich
pays du congrès :
Allemagne
site des actes du congrès :
|
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Titre : How can combination help to achieve consistency at the 0.1 ppb level? Type de document : Article/Communication Auteurs : Zuheir Altamimi , Auteur ; David Coulot
, Auteur ; Philippe Berio, Auteur ; Pierre Exertier, Auteur
Editeur : Paris, Berlin, Genève, ... : Association Internationale de Géodésie AIG IAG Année de publication : 2006 Conférence : GGOS 2006, The Global Geodetic Observing System Workshop, Towards a Consistent Geodetic Foundation for Earth Observations 08/10/2006 09/10/2006 Munich Allemagne Program with papers Langues : Anglais (eng) Descripteur : [Termes IGN] cohérence des données
[Termes IGN] combinaison au niveau des observationsRésumé : (auteur) Although the accuracy or consistency of space geodesy products at the level of 0.1 ppb, or 0.6 mm over the Earth surface, is not yet achieved today, it should however be a challenging target within the Global Geodetic Observing System (GGOS) perspective in order to meet Earth science requirement. Neither an individual space geodesy technique nor their combination could be regarded as achieving that level of accuracy or consistency. For simplicity, we mean here by accuracy, the quantitative metric level at which space geodesy techniques are able to determine positions of points or objects over the Earth surface or in its nearby space. This of course implies the availability of a global reference frame, the indispensable standard against which our geodetic products are evaluated. Combination, and implicitly comparison of multiple solutions of geodetic products of a single or several techniques, is considered to be an efficient tool to both bring to the fore discrepancies between solutions/techniques and to yield a more reliable combined product, being gathering the strengths of the combined solutions/techniques. Combination of raw observations of all or multiple space geodesy techniques, using a coherent and unique modeling, could be regarded, ideally, as the rigorous way to allow consistency between the different products. Based on our experience of both types of combination, we try in this paper to (1) evaluate the current attainable accuracy or consistency and to (2) underline the limitation factors of space geodesy techniques and their combination. We restrict our discussion in this paper to two main space geodesy products: the Terrestrial Reference Frame (TRF) and Earth Orientation Parameters (EOPs). Numéro de notice : C2006-046 Affiliation des auteurs : LAREG+Ext (1991-2011) Thématique : POSITIONNEMENT Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : sans En ligne : http://www.iag-ggos.org/ggosws_2006/position_papers/altamimi_etal_position_paper [...] Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=103376 Documents numériques
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