Tools and Methods
Radar Satellite data
Up to now the monitoring changes of the topographic surface in mining areas is based on precise levelling and terrestrial measurements, regular GPS measurements, airborne photogrammetric or airborne laser scanning surveys, connected often with long time intervals between the measurements, because of the time consuming and expensive aspects of these methods. Differential SAR interferometry (dInSAR) and Interferometric Point Target Analysis will be used to monitor the topographic surface, analysis the volume of waste piles, to record changes of open pit cast mining activities and to detect subsidence associated to underground mining activities. Due to the different characters of the areas under investigation, satellite data with different wavelengths will be used (C-, L- and X-band).