| 2003 - 2022 | Professor of remote sensing at Munich Technical University (TUM) |
| 2000 - 2022 | DLR: director of Remote Sensing Technology Institute (IMF), responsible for some 90 scientists and engineers: atmospheric spectrometry, image analysis, data mining, photogrammetry, SAR signal processing, SAR interferometry, remote sensing methodologies for traffic research, marine remote sensing, laboratory spectrometry, calibration and operation of airborne imaging spectrometers, sensor concepts. |
| 1998 - 2000 | DLR: co-director of German Remote Sensing Data Center, responsible for information technology, algorithms and processors. Establishment of the new DLR Remote Sensing Technology Institute in association with the German Remote Sensing Data Center (DFD). |
| 1996 - 1998 | DFD: head of ‘Methodology and Algorithms’ Section, SAR and InSAR processor development (SRTM, ERS), atmospheric sounding (GOME). |
| 1994 | JPL: 3 months, visiting scientist, development of algorithms for radar interferometry and special radar imaging modes, preparation of the SIR-C/X-SAR missions. |
| 1992 - 1996 | DFD: head of ‘Signal Processing’ team, development of the operational SAR processor for SIR-C/X-SAR, ERS product quality, ERS SAR interferometry, first studies for Shuttle Radar Topography Mission (SRTM). |
| 1989 - 1992 | Scientist at German Remote Sensing Data Center (DFD), development of signal processing algorithms. |
| 1981 - 1989 | Technical University Munich: chair of communications engineering: multidimensional signal and systems theory, image processing, optical signal processing, holography wave propagation, imaging systems. |
