N
Nicolas Gebert
Researcher at German Aerospace Center
Publications - 45
Citations - 2378
Nicolas Gebert is an academic researcher from German Aerospace Center. The author has contributed to research in topics: Synthetic aperture radar & Radar imaging. The author has an hindex of 20, co-authored 45 publications receiving 2049 citations. Previous affiliations of Nicolas Gebert include European Space Agency.
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Unambiguous SAR signal reconstruction from nonuniform displaced phase center sampling
TL;DR: This letter derives an innovative reconstruction algorithm and shows that an unambiguous reconstruction of a SAR signal is possible for nonuniform sampling of the synthetic aperture.
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Multidimensional Waveform Encoding: A New Digital Beamforming Technique for Synthetic Aperture Radar Remote Sensing
TL;DR: The innovative concept of multidimensional waveform encoding for spaceborne synthetic aperture radar (SAR) with digital beamforming on receive enables a new generation of SAR systems with improved performance and flexible imaging capabilities.
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Errata: Digital Beamforming on Receive: Techniques and Optimization Strategies for High-Resolution Wide-Swath SAR Imaging
TL;DR: A multi-aperture reconstruction algorithm is presented that allows for the unambiguous recovery of the Doppler spectrum and analytic expressions for both the residual ambiguities and the SNR scaling factor are generalized to cascaded beamforming networks.
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Multichannel Azimuth Processing in ScanSAR and TOPS Mode Operation
TL;DR: Investigations reveal that multichannel ScanSAR and Terrain Observation by Progressive Scans system concepts enable the imaging of ultrawide swaths with high azimuth resolution and compact antenna lengths.
Advanced Concepts for Ultra-Wide-Swath SAR Imaging
Gerhard Krieger,Nicolas Gebert,Marwan Younis,Federica Bordoni,Anton Patyuchenko,Alberto Moreira +5 more
TL;DR: In this article, advanced multi-channel SAR system concepts for the imaging of ultra-wide swaths with high azimuth resolution are reviewed and compared with each other with regard to their performance.