Interferometric Analysis of RADARSAT Strip-Map Mode Data
Geudtner, Dirk and Vachon, Paris and Mattar, Karim and Schättler, Birgit and Gray, A.L. (2001) Interferometric Analysis of RADARSAT Strip-Map Mode Data. Canadian Journal of Remote Sensing, Vol. 27 (No. 2), pp. 96-108.
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RADARSAT2 synthetic aperture radar (SAR) provides several strip-map and ScanSAR beam modes. We consider the interferometric analysis of RADARSAT SAR strip-map mode data sets, which differ in several respects from the well-known ERS SAR version. Interferometric image pairs with suitable baselines can be selected through evaluation of the projected equatorial satellite ground track drift. We acquired several data sets with useful interferometric baselines over Bathurst Island, Canada. This Arctic study site provides dry and barren surface conditions, reducing the effects of temporal decorrelation over RADARSATs 24-day repeat-pass interval, especially during the winter time, allowing generation of useful interferograms and demonstration of interferometry techniques. The effects of RADARSATs imaging geometry on the azimuth and range frequency spectra are analyzed to establish their influence on spectral alignment. This also includes a discussion of the rotational decorrelation caused by skewed orbit geometry. For three image pairs, we compare the relative accuracy of RADARSATs annotated and external definitive orbit ephemeris data and discuss the merits of the two types of orbit data for determination of the three-dimensional interfereometric imaging geometry.
|Title:||Interferometric Analysis of RADARSAT Strip-Map Mode Data|
|Journal or Publication Title:||Canadian Journal of Remote Sensing|
|In ISI Web of Science:||Yes|
|Page Range:||pp. 96-108|
|Keywords:||Radarsat, SAR interferometry|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Space|
|HGF - Program Themes:||W EO - Erdbeobachtung|
|DLR - Research area:||Space|
|DLR - Program:||W EO - Erdbeobachtung|
|DLR - Research theme (Project):||UNSPECIFIED|
|Institutes and Institutions:||Microwaves and Radar Institute|
Remote Sensing Technology Institute
|Deposited By:||Cornelia Roehl|
|Deposited On:||06 Feb 2006|
|Last Modified:||06 Jan 2010 22:37|
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