Title :
Atmospheric delay compensation in differential SAR interferometry for volcanic deformation monitoring - study case: El Hierro
Author :
Cong, Xiaoying ; Eineder, Michael ; Fritz, Thomas
Author_Institution :
Tech. Univ. Munchen (TUM), Garching, Germany
Abstract :
In order to obtain the accurate ground deformation from SAR interferograms on volcanic areas, the signal propagation delay through the atmosphere needs to be considered. In this paper numerical weather model data are used to compensate the stratified atmospheric delay in test site El Hierro (Canary Islands). Three GPS stations, installed on the nearby Island, are selected for validating and evaluating the weather model data. Atmospheric phase screen from PS-estimation shows a good agreement with turbulence induced atmospheric effect.
Keywords :
atmospheric techniques; remote sensing by radar; volcanology; weather forecasting; Canary Islands; El Hierro test site; GPS stations; atmospheric delay compensation; atmospheric phase screen; differential SAR interferometry; ground deformation; numerical weather model data; signal propagation delay; stratified atmospheric delay; turbulence induced atmospheric effect; volcanic areas; volcanic deformation monitoring; weather model data; Atmospheric measurements; Atmospheric modeling; Data models; Delay; Global Positioning System; Meteorology; Numerical models; SAR; TerraSAR-X; deformation; tropospheric delay; volcano;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2012 IEEE International
Conference_Location :
Munich
Print_ISBN :
978-1-4673-1160-1
Electronic_ISBN :
2153-6996
DOI :
10.1109/IGARSS.2012.6350563
