| Titre | Orthorectification of full-polarimetric Radarsat-2 data using accurate LIDAR DSM |
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| Auteur | Toutin, T; Wang, H; Chomaz, P; Pottier, E |
| Source | IEEE Transactions on Geoscience and Remote Sensing (Institute of Electrical and Electronics Engineers) vol. 51, issue 12, 2013 p. 5252-5258, https://doi.org/10.1109/TGRS.2012.2233206 |
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| Année | 2013 |
| Séries alt. | Secteur des sciences de la Terre, Contribution externe 20120239 |
| Éditeur | Institute of Electrical and Electronics Engineers (IEEE) |
| Document | publication en série |
| Lang. | anglais |
| DOI | https://doi.org/10.1109/TGRS.2012.2233206 |
| Media | papier; en ligne; numérique |
| Formats | pdf |
| Province | Québec |
| SNRC | 21L/14; 21L/15 |
| Région | Île d'Orléans |
| Lat/Long OENS | -71.5000 -70.5000 47.0000 46.7500 |
| Sujets | télédétection; imagerie radar; méthodes radar; techniques de cartographie; cartographie par ordinateur; géophysique |
| Programme | Cartographie topographique |
| Diffusé | 2013 12 01 |
| Résumé | (disponible en anglais seulement)
Orthorectification using digital terrain models is a key issue for full-polarimetric complex SAR data because resampling the complex data can corrupt the
polarimetric phase, mainly in terrain with relief. This research thus compared two methods for the orthorectification of the complex SAR data: The polarimetric processing is performed before (image-space method) or after (ground-space method) the
geometric processing. Radarsat-2 fine-quad data acquired with different look angles over a hilly relief study site were orthorectified using accurate light detection and ranging digital surface model. Quantitative evaluations between the two methods
as a function of different geometric and radiometric parameters were thus performed to evaluate the impact during orthorectification. The results demonstrated that the look angles and the terrain slopes can potentially corrupt the polarimetric
complex SAR data during its orthorectification with the ground-space method. In addition, general advice is provided to reduce these impacts to an acceptable level for the users and their polarimetric applications. |
| GEOSCAN ID | 291926 |
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