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Titre	Stereo radargrammetry with Radarsat-2 in the Canadian Arctic
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Auteur	Toutin, T; Blondel, E; Clavet, D; Schmitt, C
Source	IEEE Transactions on Geoscience and Remote Sensing (Institute of Electrical and Electronics Engineers) vol. PP, issue 99, 2012 p. 1-9, https://doi.org/10.1109/TGRS.2012.2211605 Accès ouvert
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Année	2012
Séries alt.	Secteur des sciences de la Terre, Contribution externe 20120240
Éditeur	Institute of Electrical and Electronics Engineers (IEEE)
Document	publication en série
Lang.	anglais
DOI	https://doi.org/10.1109/TGRS.2012.2211605
Media	papier; en ligne; numérique
Formats	pdf
Province	Nunavut
SNRC	27F/13
Région	île de Baffin; Gibbs Fiord; Sillem Island
Lat/Long OENS	-72.0000 -71.5000 71.0000 70.7500
Sujets	télédétection; méthodes radar; imagerie radar; glace; concentration de glace; champs de glace; géophysique
Illustrations	cartes de localisation; images satellitaires; tableaux; graphiques
Programme	Cartographie topographique
Diffusé	2013 05 01
Résumé	(disponible en anglais seulement) A digital elevation model (DEM) is generated using a Radarsat-2 (R-2) high-resolution stereo pair acquired over challenging icefields and fjords site in the Canadian Arctic (80$%$ of ice-covered areas and almost 50$%$ of $>40{circ}$ slopes). The stereo DEM was produced using a new hybrid radargrammetric model, which did not need any reference cartographic data. The accuracy of the stereo DEM was quantified with a topographic 1959 DEM and Ice, Cloud, and land Elevation Satellite (ICESat) data, over and outside the icefields and as a function of slope. The method could be applied to ice-covered areas with 1-sigma 25- or 18-m accuracy over less than 30${circ}$ or 5${circ}$ slopes, respectively. In addition, a systematic elevation lowering of around 10 m computed between 1959 DEM and recent elevation data (R-2 and ICESat) could be due to icefield wastage over the last 50 years.
GEOSCAN ID	291927