Zusammenfassung
Summary
With the launch of the Copernicus program, the satellites Sentinel-1A and 1B provide regular (12-days/6-days), area-wide radar data, which are free of charge. This »free and open data policy« concept focuses on users from business, science and administration, to generate value added data. Thus, the North Rhine-Westphalian Surveying and Mapping Administration (District Government of Cologne/Geobasis NRW) will provide the so called »Ground Movement Cadaster« (Bodenbewegungskataster NRW). For this product, a multilevel quality assurance process is defined. In this process the observations of the Persistent Scatterer Interferometry are aggregated into tiles of 250 m × 250 m, their motion behavior is validated against each other and non-representative values are eliminated. Finally, a matching of the tested tiles into the official spatial reference takes place. For this purpose leveling data is used as reference data. This paper analyzes the potential of radar interferometry as a new method in a geodetic spatial reference.