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IEEE Transactions on Geoscience and Remote Sensing 49, 8 (2011) 2972-2982
Geolocation Assessment of MERIS GlobCover Orthorectified Products
Bicheron Patrice 1, Virginie Amberg 2, Ludovic Bourg 3, David PETIT 2, Mireille Huc 1, 4, Bastien Miras 1, Carsten Brockmann 5, Olivier Hagolle 4, 6, Steven Delwart 7, Franck Ranera 8, Olivier Arino 9
(2011)

The GlobCover project has developed a service dedicated to the generation of multiyear global land cover maps at 300-m spatial resolution using as its main source of data the full-resolution full-swath (300 m) data (FRS) acquired by the MERIS sensor on-board the ENVISAT satellite. As multiple single daily orbits have to be combined in one single data set, an accurate relative and absolute geolocation of GlobCover orthorectified products is required and needs to be assessed. We describe in this paper the main steps of the orthorectification pre-processing chain as well as the validation methodology and geometric performance assessments. Final results are very satisfactory with an absolute geolocation error of 77-m rms and a relative geolocation error of 51-m rms.
1 :  MEDIAS FRANCE
CNES
2 :  Magellium
Magellium
3 :  ACRI-ST
acri
4 :  Centre d'études spatiales de la biosphère (CESBIO)
CNRS : UMR5126 – Institut de recherche pour le développement [IRD] – CNES – Observatoire Midi-Pyrénées – INSU – Université Paul Sabatier [UPS] - Toulouse III
5 :  Brockmann Consult
Brockmann Consult
6 :  Centre National d'Etudes Spatiales (CNES)
Ministère de l'Enseignement Supérieur et de la Recherche Scientifique
7 :  European Space Research and Technology Centre (ESTEC)
ESA - European Space Agency
8 :  European State Research Institute (ESRIN)
ESA
9 :  ESRIN
European Space Agency
Physique/Physique/Physique Atmosphérique et Océanique

Planète et Univers/Interfaces continentales, environnement

Sciences de l'environnement/Milieux et Changements globaux
absolute geolocation error – ENVISAT satellite – full-resolution full-swath data – geolocation assessment – geometric performance assessments – geophysical image processing – GlobCover project – image registration – MERIS GlobCover orthorectified products – MERIS sensor – multiple single daily orbits – multiyear global land cover maps – orthorectiflcation preprocessing chain – relative geolocation error – terrain mapping
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