| Titre | 3-D Radargrammetric modeling of RADARSAT-2 ultrafine mode: Preliminary results of the geometric calibration |
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| Auteur | Toutin, T; Chenier, R |
| Source | IEEE Geoscience and Remote Sensing Letters vol. 6, no. 2, 4768710, 2009 p. 282-286, https://doi.org/10.1109/LGRS.2008.2010563 |
| Année | 2009 |
| Séries alt. | Ressources naturelles Canada, Contribution externe 20181480 |
| Éditeur | Institute of Electrical and Electronics Engineers (IEEE) |
| Document | publication en série |
| Lang. | anglais |
| DOI | https://doi.org/10.1109/LGRS.2008.2010563 |
| Media | papier; en ligne; numérique |
| Formats | pdf |
| Sujets | télédétection; géophysique |
| Programme | Direction du Centre canadien de télédétection |
| Résumé | (disponible en anglais seulement)
The geometry and the accuracy of the 3-D cartographic localization of RADARSAT-2 images are being evaluated as part of the Canadian Space Agency's Science and
Operational Applications Research program. In a first step, the Toutin's 3-D physical model, previously developed for RADARSAT-1, was adapted to RADARSAT-2 sensor and applied to two ultrafine mode images (U2 and U25) acquired over an area in
Beauport, Quebec. Both the 3-D modeling computed with only 12 ground control points and its geometric localization were evaluated with different check data: 1) independent check points; 2) the two quasi-epipolar images; 3) the two orthoimages; and 4)
1-m accurate orthophotos. All four results and validations are in agreement and confirm that the 3-D geometric localization and restitution accuracy are 1 m in planimetry and 2 m in elevation. The checked data error being included in these
evaluations and the relative error computed from the quasi-epipolar comparison provided a high level of confidence that the precision of Toutin's 3-D radargrammetric model is better than 0.25 m. |
| GEOSCAN ID | 311835 |
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