Land movement cadastre NRW

Based on satellite-supported radar interferometry (Persistent Scatterer Interferometry, PSI), the ground movement cadastre NRW shows vertical ground movement rates (mm/year) in North Rhine-Westphalia generalized in 250 m hexagons Precision in the millimeter range in combination with large-area spatial coverage and high temporal resolution is increasingly being established as the new standard for capturing ground movements. Freely available SAR data from the radar satellite mission Sentinel-1, which is operated under the leadership of ESA as part of the Copernicus program, serve as the data basis for the NRW ground movement cadastre. The storage and validation of the radar interferometric measurement data is carried out using height reference points of the official spatial reference. Each hexagon is spatially averaged from at least three pixel measurements.