| Title | 3D radargrammetric modeling of RADARSAT-2 ultrafine mode: preliminary results of the geometric calibration
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| Author | Toutin, T; Chénier, R |
| Source | IEEE Transactions on Geoscience and Remote Sensing (Institute of Electrical and Electronics Engineers) vol. 6, no. 3, 2009 p. 1-5, https://doi.org/10.1109/LGRS.2009.2024391 |
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| Year | 2009 |
| Alt Series | Earth Sciences Sector, Contribution Series 20090182 |
| Publisher | Institute of Electrical and Electronics Engineers (IEEE) |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| File format | pdf |
| Subjects | geophysics; remote sensing; radar methods; radar imagery; satellite imagery; modelling; RADARSAT-2 |
| Illustrations | satellite images; tables |
| Program | Topographic Mapping |
| Released | 2009 07 01 |
| Abstract | 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 | 247831 |
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