| 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 |
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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 |
| 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 |
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