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TitleStereo radargrammetry with Radarsat-2 in the Canadian Arctic
AuthorToutin, T; Blondel, E; Clavet, D; Schmitt, C
SourceIEEE Transactions on Geoscience and Remote Sensing (Institute of Electrical and Electronics Engineers) vol. PP, issue 99, 2012 p. 1-9, Open Access logo Open Access
Alt SeriesEarth Sciences Sector, Contribution Series 20120240
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Mediapaper; on-line; digital
File formatpdf
AreaBaffin Island; Gibbs Fiord; Sillem Island
Lat/Long WENS-72.0000 -71.5000 71.0000 70.7500
Subjectsgeophysics; remote sensing; radar methods; radar imagery; ice; ice conditions; icefields; Radarsat-2
Illustrationslocation maps; satellite images; tables; plots
ProgramTopographic Mapping
Released2013 05 01
AbstractA 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.

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