Derivation of terrain slope from SAR interferometric phase gradientThe relationship between the gradient of the interferometric phase and the terrain slope, which, it is thought, would allow a derivation of the terrain slopes without phase unwrapping, is presented. A linear relationship between the interferometric phase gradient and the terrain slopes was found. A quantitative error analysis showed that only very small errors are introduced by these approximations for orbital Synthetic Aperture Radar (SAR) geometries. An example of a slope map for repeat pass interferometry from ERS-1 SAR data is given. A number of direct and indirect applications of the terrain slope are indicated: erosion and avalanche hazard studies, radiometric calibration of SAR data, and normalization of the interferometric correlation coefficient.
Document ID
19940030617
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Wegmueller, Urs (Zurich Univ. Switzerland)
Werner, Charles L. (Zurich Univ. Switzerland)
Rosen, Paul A. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1994
Publication Information
Publication: ESA, Proceedings of 2nd ERS-1 Symposium on Space at the Service of Our Environment, Volume 2