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TitleComparison of Geomorphological Features in the Canadian Shield As Obtained From RADARSAT-1 Fine Mode, Beams 1, 2 and 5
AuthorSaint-Jean, R; Singhroy, V
SourceInternational Symposium, Geomatics in the Era of RADARSAT (GER'97), Ottawa, Canada, May 25-30; 1997.
Alt SeriesEarth Sciences Sector, Contribution Series 20042172
AbstractUntil now, few studies have focused on the information content of the SAR images as a function of the incidence angle of the microwave beam. Users are interested in knowing what incidence angle will give them the richest and most reliable information on ground morphology as this will lead into more reliable maps. Geomorphological information from a SAR image is in fact a complex process involving the local incidence angle, interaction between the incident beam and the vegetation canopy and the apparent surface roughness. The objective of this study is to understand how the morphology of the terrain varies with the incidence angle and which incidence angle gives the best rendition of geomorphological features. To attain this goal, three RADARSAT-1 images were orthorectified using the satellite's orbital parameters and a DEM obtained from a 1:20 000 scale contours map. Using a subset of the original scene and the DEM, radiometric profiles are obtained over a forest cover.

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