GEOSCAN Search Results: Fastlink


TitleAdvantages of Right- and Left-looking Radar Imaging Systems for Earth Observation Studies
DownloadDownloads (Preprint)
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorBudkewitsch, P; Gauthier, E; D'Iorio, M; Pellon de Miranda, F
SourceProceedings of the 23rd Canadian Symposium on Remote Sensing, Ste. Foy, Quebec, August 20 - 24; 2001., Open Access
logo Open Access
Alt SeriesEarth Sciences Sector, Contribution Series 20042992
Mediapaper; on-line; digital
File formatpdf
Released2001 01 01
AbstractSeaming together satellite images has long been important for creating image maps larger than one image frame or strip. Since the swath and direction of orbital tracks are generally not concordant with map co-ordinates, splicing multiple scenes into a common map co-ordinate system requires geo-registration to a co-ordinate grid. Radiometric adjustment and combining or resampling of original pixel values are also often required to achieve a uniformity of tone across the mosaic.

In our radar reconstruction of Gondwana (part of the Pangaea supercontinent before its break-up some 200 Ma ago), left-looking RADARSAT-1 data acquired during the Antarctic Mapping Mission and normal mode (right-looking) data were used to create a trans-continental mosaic of part of South America and Africa with a relatively consistent westward look direction. This important aspect of the mosaic would not be possible from a SAR system without left- and right-looking capability.

Although the appearance of radar images is strongly affected by incidence angle, heightened awareness about the influence of look direction has upon images may lead to more sagacious use of radar data for Earth observation studies.


Date modified: