Geolocation Assessment of MERIS GlobCover Orthorectified Products

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...

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Bibliographic Details
Published in:IEEE transactions on geoscience and remote sensing 2011-08, Vol.49 (8), p.2972-2982
Main Authors: Bicheron, P., Amberg, V., Bourg, L., Petit, D., Huc, M., Miras, B., Brockmann, C., Hagolle, O., Delwart, S., Ranera, F., Leroy, M., Arino, O.
Format: Article
Language:English
Subjects:
Accuracy
Applied geophysics
Atmospheric and Oceanic Physics
Continental interfaces, environment
Earth
Earth sciences
Earth, ocean, space
Environmental Sciences
Exact sciences and technology
Geology
Global Changes
Image registration
Instruments
Internal geophysics
land surface
Physics
Pixel
Satellites
Sciences of the Universe
Sea measurements
spatial coherence
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Summary: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.
ISSN:0196-2892
1558-0644
DOI:10.1109/TGRS.2011.2122337