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Macedo, Karlus A. C. and Scheiber, Rolf (2004) Precise Topography- and Aperture-Dependent Motion Compensation for Airborne SAR. IEEE Geoscience and Remote Sensing Letters, 2 (2), pp. 172-176. IEEE Piscataway. doi: 10.1109/LGRS.2004.842465. ISSN 1545-598X.
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Abstract
Efficient synthetic aperture radar (SAR) processing algorithms are unable to exactly implement the aperture- and topography-dependent motion compensation due to the superposition of the synthetic apertures of several targets having different motion errors and potentially different topographic heights. Thus, during motion compensation, a reference level is assumed, resulting in residual phase errors that impact the focusing, geometric fidelity, and phase accuracy of the processed SAR images. This letter proposes a new short fast Fourier transform-based postprocessing methodology capable of efficient and precise compensation of these topography- and aperture-dependent residual phase errors. In addition to wide beamwidth (very high resolution) SAR systems, airborne repeat-pass interferometry especially benefits from this approach, as motion compensation can be significantly improved, especially in areas with high topographic changes. Repeat-pass interferometric data of the E-SAR system of the German Aerospace Center (DLR) are used to demonstrate the performance of the proposed approach.
| Item URL in elib: | https://elib.dlr.de/21051/ | |||||||||
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| Document Type: | Article | |||||||||
| Title: | Precise Topography- and Aperture-Dependent Motion Compensation for Airborne SAR | |||||||||
| Authors: |
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| Date: | 2004 | |||||||||
| Journal or Publication Title: | IEEE Geoscience and Remote Sensing Letters | |||||||||
| Refereed publication: | Yes | |||||||||
| Open Access: | No | |||||||||
| Gold Open Access: | No | |||||||||
| In SCOPUS: | No | |||||||||
| In ISI Web of Science: | Yes | |||||||||
| Volume: | 2 | |||||||||
| DOI: | 10.1109/LGRS.2004.842465 | |||||||||
| Page Range: | pp. 172-176 | |||||||||
| Editors: |
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| Publisher: | IEEE Piscataway | |||||||||
| ISSN: | 1545-598X | |||||||||
| Status: | Published | |||||||||
| Keywords: | Airborne, differential interferomertry (D-InSAR), interferometry, motion errors, synthetic aperture radar (SAR), topography, wide beamwidth. | |||||||||
| HGF - Research field: | Aeronautics, Space and Transport (old) | |||||||||
| HGF - Program: | Space (old) | |||||||||
| HGF - Program Themes: | W EO - Erdbeobachtung | |||||||||
| DLR - Research area: | Space | |||||||||
| DLR - Program: | W EO - Erdbeobachtung | |||||||||
| DLR - Research theme (Project): | W - no assignment (old) | |||||||||
| Location: | Oberpfaffenhofen | |||||||||
| Institutes and Institutions: | Microwaves and Radar Institute > SAR Technology | |||||||||
| Deposited By: | Scheiber, Dr.-Ing. Rolf | |||||||||
| Deposited On: | 09 Jan 2006 | |||||||||
| Last Modified: | 14 Jan 2010 20:37 |
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