DEM error retrieval by analyzing time series of differential interferogramsReport as inadecuate

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1 GIPSA-SIGMAPHY - SIGMAPHY GIPSA-DIS - Département Images et Signal 2 GIPSA-Services - GIPSA-Services GIPSA-lab - Grenoble Images Parole Signal Automatique 3 LISTIC - Laboratoire d-Informatique, Systèmes, Traitement de l-Information et de la Connaissance

Abstract : 2-pass Differential Synthetic Aperture Radar Interferometry D-InSAR processing have been successfully used by the scientific community to derive velocity fields. Nevertheless, a precise Digital Elevation Model DEM is necessary to remove the topographic component from the interferograms. This letter presents a novel method to detect and retrieve DEM errors by analyzing time series of differential interferograms. The principle of the method is based on the comparison of fringe patterns with the perpendicular baseline. First, a mathematical description of the algorithm is exposed. Then, the algorithm is applied on a series of four one-day ERS-1-2 interferograms.

Author: Lionel Bombrun - Michel Gay - Emmanuel Trouvé - Gabriel Vasile - Jerome Mars -



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