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Remote Sensing

Research Activities and Projects


The focus for research activities is in the field of Remote Sensing on following topics:

  • Sensors for airborne and spaceborne earth observation;
  • Analysis of multi- and hyper spectral image data;
  • Airborne laser scanning;
  • Analysis of SAR data (= Synthetic Aperture Radar);
  • Generation of elevation models and detection of terrain formations by SAR interferometry;
  • 3D reconstructions from laser scanning and radar data;
  • Time series analysis;
  • Data fusion and
  • Comprehensice development of methods for the improvement of image and data analysis automation.

Current Projects


Bathymetry by Fusion of Airborne Laserscanning and Multi-spectral Aerial Imagery
(funded by DFG, 2017-18)

Bathymetric Digital Elevation Models (DEM) of the underwater floor of rivers, lakes, and coastal areas are usually measured by ship-based sonar devices. This is both costly and time consuming; furthermore, the sounding vessels cannot operate in shallow waters. Hence, there is a great demand to apply methods of Photogrammetry and remote sensing, which enable acquiring rapidly and almost seamlessly data of vast areas. These techniques can roughly be sorted into two groups: analysis of airborne or space borne imagery and airborne Laserscanning (ALS) using green laser. More ...


4D Change Detection based on Persistent Scatterer Interferometry 4D Change Detection based on Persistent Scatterer Interferometry

Persistent Scatterer Interferometry (PSI) detects and analyses PS points, which are characterized by strong, stable, and coherent radar signals throughout a time series of SAR images. The attributes of the PS points, such as line-of-sight velocities (mm/year level) and topography height, can be derived and used for topography reconstruction and deformation analysis in a scene of interest. In practice, PSI works particularly well in monitoring built-up cities because densely clustered PS points are anticipated to be detected from stationary buildings. More ...


 

For further information please contact Prof. Dr.-Ing. Uwe Sörgel