Synthetic Aperture Radar Interferometry. Baseline Determination and Correction of Atmospheric Delay Induced by Topography of SAR Interferometry for Precise Surface Change Detection.

概要

論文の詳細を見る
Making SAR interferograms for the Earth's surface change detection, determination of a baseline between positions of a repeat-pass satellite severely affects its precision. The baseline is automatically estimated using differential phase in the interferogram and a DEM (Digital Elevation Model). It is essential to use as wide area as possible for the determination of the baseline. In the SAR interferograms, we often find error correlation between differential changes and the topography (elevation), so apparent error surface deformation will appear. This error is due to the differential tropospheric delay between the two SAR scenes in different atmospheric condition. We applied a simple and effective correction method that the error is removed by subtracting the DEM multiplied a coefficient.
日本測地学会の論文