Othmar Frey

Publications92
h-index15
Citations888
Highly Influential Citations29
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Focusing of Airborne Synthetic Aperture Radar Data From Highly Nonlinear Flight Tracks
TLDR
This paper describes the processing of SAR data acquired from highly nonlinear flight tracks, typical of sensors mounted on small aircraft or drones. Expand
  • 102
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Sentinel-1 support in the GAMMA Software
First results using the new Sentinel-1 SAR look very promising but the special interferometric wideswath data acquired in the TOPS mode makes InSAR processing challenging. The steep azimuth spectra… Expand
  • 57
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Assessment of the influence of flying altitude and scan angle on biophysical vegetation products derived from airborne laser scanning
Airborne Laser Scanning (ALS) has been established as a valuable tool for the estimation of biophysical vegetation properties such as tree height, crown width, fractional cover and leaf area index… Expand
  • 76
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Sentinel-1 Support in the GAMMA Software
TLDR
In this contribution we describe the Sentinel-1 support in GAMMA Software, a high-level software package used by researchers, service providers and operational users in their SAR, InSAR, PSI and offset tracking work. Expand
  • 38
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Improved Knowledge of SAR Geomerty through Atmospheric Modelling
Satellites observing and measuring the Earth’s surface with electromagnetic waves are subject to atmospheric path delays. Atmospheric effects on radar signal propagation modify the signal velocity… Expand
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Analyzing Tomographic SAR Data of a Forest With Respect to Frequency, Polarization, and Focusing Technique
TLDR
In this paper, the resulting data products obtained by tomographically focusing two airborne multibaseline SAR data sets of a partially forested area, one at L-band and another at P-band, are subject to a detailed analysis with respect to the location and the type of backscattering sources. Expand
  • 66
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3-D Time-Domain SAR Imaging of a Forest Using Airborne Multibaseline Data at L- and P-Bands
  • Othmar Frey, E. Meier
  • Computer Science
  • IEEE Transactions on Geoscience and Remote…
  • 29 April 2011
TLDR
In this paper, a time-domain back-projection based tomographic processing approach to a 3-D reconstruction grid is detailed, with the focusing in the third dimension being either modified versions of multilook standardbeamforming, robust Capon beamforming, or multiple signal classification. Expand
  • 61
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Tomographic Imaging of a Forested Area By Airborne Multi-Baseline P-Band SAR
In recent years, various attempts have been undertaken to obtain information about the structure of forested areas from multi-baseline synthetic aperture radar data. Tomographic processing of such… Expand
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Single-Look SAR Tomography as an Add-On to PSI for Improved Deformation Analysis in Urban Areas
TLDR
This paper investigates the added value that can be achieved by operationally combining SAR tomography with a PSI approach toward the objective of improving deformation sampling in layover-affected urban areas. Expand
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Processing SAR data of rugged terrain by time-domain back-projection
TLDR
This paper was published in “Proceedings of SPIE Vol. 5980: SAR Image Analysis, Modeling and Techniques X” and is made available for personal use only. Expand
  • 29
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