The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences. Vol. XXXVII. Part Bl. Beijing 2008 
But the results need more confirmation because of the 
insufficient amount of data available. The atmospheric 
influence and DEM error couldn’t be ignored in interferometry. 
Interferograms stack or Permanent Scatterers (PS) technique 
should be used to eliminate the influence in future. 
ACKNOWLEDGMENTS 
The European Space Agency's (ESA) ERS-1, ERS-2 and 
Envisat satellite(s) have been used to collect the interferometry 
data. 
The data were obtained as a part of ESA Cat-1 Project 
(No.4527). 
The interferometry processing in this project was performed 
using the freely available Doris software, developed by the 
Delft Institute for Earth-Oriented Space Research (DEOS), 
Delft University of Technology. 
(http://www.geo.tudelft.nl/doris.html). 
Data integration is performed using ArcGIS supplied by ESRI. 
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