Subsidence Monitoring using SAR interferometric techniques

Prof. Dr.-Ing. Wolfgang Busch
Dipl.-Ing. Diana Walter
Dipl.-Geol. Michael Schäfer
Dr. rer. nat. Steffen Knospe

Clausthal University of Technology, 
Institute of Geotechnical Engineering and Mine Surveying

Radarinterferometry is used since many years to detect and measure 
mining induced subsidences. Although the potential is quite high 
there are restricting factors, like atmospheric disturbance, 
decorrelation and other characteristic error sources. We used 
different methods: Differential SAR Interferometry as well as 
Persistent Scatterer Interferometry in applications from different 
areas, like hard coal and potash underground mining, lignite mining 
and oil fields. We based our analyses on data from different sensors 
with different wavelengths and repetition rates. The paper will give 
a summarized report.