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TitleUsing Ortho-Rectified SAR Imagery Acquired over Rugged Terrain for Thematic Applications in Glacier Hydrology
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AuthorAdam, S; Toutin, Th; Pietroniro, A; Brugman, M
SourceCanadian Journal of Remote Sensing vol. 23, issue 1, 1997 p. 76-80, https://doi.org/10.1080/07038992.1997.10874681
Year1997
Alt SeriesEarth Sciences Sector, Contribution Series 20042187
PublisherInforma UK Limited
Documentserial
Lang.English
Mediapaper; on-line; digital
File formatpdf
Subjectsremote sensing; glacier surveys; snow; SAR imagery; ERS-1; thematic applications; position estimates; accuracy; ortho-rectification
Illustrationsflow charts; tables; satellite imagery
Released2014 07 31
AbstractThe utility of Synthetic Aperture Radar (SAR) imagery for thematic applications in glacier hydrology, such as snow and ice mapping, is dependent upon proper geometric correction of the imagery. Rectifying geometric errors in radar imagery of mountainous areas is often difficult because of significant distortions arising from the sensor's sensitivity to local topographic relief. Using a method which integrates the satellite orbital and sensor information, ground control points, and digital elevation data, two ERS-1 SAR images of Place Glacier, B.C. are successfully ortho-rectified. The snow line positions and glacier boundary identified on the SAR imagery are within 50 to 75 m of their true locations based on data derived from field work. Satellite derived estimates of common measurements made in glacier hydrology, such as equilibrium line altitude, net mass balance, and accumulation area ratio, illustrate that the restitution accuracy of the ortho-rectification is very reliable.
GEOSCAN ID218989