| Title | Impact of Radarsat-2 SAR ultra-fine mode parameters on stereo-radargrammetric DEMs |
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| Author | Toutin, T |
| Source | IEEE Transactions on Geoscience and Remote Sensing (Institute of Electrical and Electronics Engineers) vol. 48, no. 10, 2010 p. 3816-3823, https://doi.org/10.1109/TGRS.2010.2048715 |
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| Year | 2010 |
| Alt Series | Earth Sciences Sector, Contribution Series 20100293 |
| 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; geometric analyses; SAR; Radarsat-2 |
| Illustrations | graphs; tables; images |
| Program | Topographic Mapping |
| Released | 2010 10 01 |
| Abstract | The new high-resolution mode of Radarsat-2 was evaluated for digital elevation model (DEM) generation using stereo-radargrammetry with Toutin's 3-D physical model as part of the Canadian Space Agency's
programs. In addition, the impact of radar parameters on stereo-extracted DEMs was evaluated. Three stereo pairs using different radar parameters (resolutions; HH and VV polarizations; slant and ground range; image spacing) from ultrafine-mode
Radarsat-2 data acquired over a test site north of Québec City, Canada, were formed to generate DEMs, which were thus compared to 15-cm-accurate lidar elevation data. Results showed a good accuracy for the three stereo-extracted DEMs: less than 0.8 m
for the horizontal positioning and around 3 m (1sigma) for the elevation on bare soils, with small 3-D biases (2-3 m). The HH stereo pair in slant-range format slightly but consistently achieved the best results. |
| GEOSCAN ID | 287243 |
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