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Integrated Radar Interferometry for Ground Subsidence Monitoring

Linlin Ge(1) and Chris Rizos(1)

(1) University of New South Wales, Kensington, NSW 2052, Sydney, Australia

Abstract

Radar interferometry (InSAR) has been used together with GPS and GIS techniques to monitor ground subsidence due to underground mining in a test site around the Appin township, southwest of Sydney, Australia. A digital elevation model (DEM) was derived from ERS Tandem data and assessed using elevation profiles from ground survey. This DEM was then employed to remove topographic fringes in the differential InSAR (DInSAR) processing of ERS-1/2 and JERS-1 data. GPS surveyed ground control points were used throughout the DInSAR processing. Successful DInSAR results were then export to the GIS and mine subsidence regions extracted. The InSAR measured subsidence can be delivered as profiles, contour maps, TIN, and so on. Multiple DInSAR results were composed into an animation showing the mining progress.

 

Workshop presentation

Full paper

Keywords: ESA European Space Agency - Agence spatiale europeenne, observation de la terre, earth observation, satellite remote sensing, teledetection, geophysique, altimetrie, radar, chimique atmospherique, geophysics, altimetry, radar, atmospheric chemistry