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Geometrical performances of the VEGETATION products / Sylvia Sylvander (2003)  

Public Titre : Geometrical performances of the VEGETATION products Type de document : Article/Communication Auteurs : Sylvia Sylvander, Auteur ; I. Albert-Grousset, Auteur ; P. Henry, Auteur Editeur : New York : Institute of Electrical and Electronics Engineers IEEE Année de publication : 2003 Conférence : IGARSS 2003, International Geoscience And Remote Sensing Symposium 21/07/2003 25/07/2003 Toulouse France Proceedings IEEE Importance : pp 573 - 575 Format : 21 x 30 cm Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique [Termes IGN] étalonnage d'instrument [Termes IGN] image SPOT 4 [Termes IGN] image SPOT 5 [Termes IGN] image SPOT-Végétation [Termes IGN] point d'appui [Termes IGN] précision géométrique (imagerie) [Termes IGN] qualité géométrique (image) [Termes IGN] spatiotriangulation Résumé : (auteur) VEGETATION data are mainly used for multidate applications, which induces high level geometrical specifications, especially for multitemporal registration. To comply with them, the VEGETATION 1 image location is improved by a systematic use of ground control points. These are provided by a ground control points data base generated through VEGETATION 1 chips using spacetriangulation method. Consequently, since its launch onboard SPOT 4 in March 1998, VEGETATION 1 has showed a very good and stable geometrical performance. VEGETATION 2, launched onboard SPOT 5 in May 2002, completes now VEGETATION 1 for operational production. It is so essential to ensure geometrical continuity between both sensors. On SPOT 5, a stellar sensor provides a very good estimation of satellite attitude, implying a very good absolute image location : it is not necessary to improve VEGETATION 2 images using ground control points. However, it was necessary to perform a fine geometrical calibration of VEGETATION 2 cameras that was realised during the commissioning phase using ground control points of the VEGETATION 1 data base. Today, we can say that VEGETATION 2 geometrical performance is at least as good as VEGETATION 1's and geometrical continuity is guaranteed. The object of this paper is to present VEGETATION 1 geometrical performance and the methods and results of VEGETATION 2 geometrical commissioning phase. Numéro de notice : C2003-053 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : 10.1109/IGARSS.2003.1293846 En ligne : https://doi.org/10.1109/IGARSS.2003.1293846 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=102630