Modeling Multifrequency Pol-InSAR Data From the Percolation Zone of the Greenland Ice Sheet
The analysis of data from an airborne synthetic aperture radar (SAR) campaign in the percolation zone of Greenland revealed an interferometric coherence undulation behavior with respect to vertical wavenumber, which cannot be explained with existing models. We propose a model extension that accounts...
Published in: | IEEE Transactions on Geoscience and Remote Sensing |
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Online Access: | https://elib.dlr.de/118546/ https://elib.dlr.de/118546/1/FINAL%20VERSION.PDF https://ieeexplore.ieee.org/document/8490682 |
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ftdlr:oai:elib.dlr.de:118546 2023-12-03T10:23:24+01:00 Modeling Multifrequency Pol-InSAR Data From the Percolation Zone of the Greenland Ice Sheet Fischer, Georg Papathanassiou, Konstantinos Hajnsek, Irena 2019-04 application/pdf https://elib.dlr.de/118546/ https://elib.dlr.de/118546/1/FINAL%20VERSION.PDF https://ieeexplore.ieee.org/document/8490682 en eng IEEE - Institute of Electrical and Electronics Engineers https://elib.dlr.de/118546/1/FINAL%20VERSION.PDF Fischer, Georg und Papathanassiou, Konstantinos und Hajnsek, Irena (2019) Modeling Multifrequency Pol-InSAR Data From the Percolation Zone of the Greenland Ice Sheet. IEEE Transactions on Geoscience and Remote Sensing, 57 (4), Seiten 1963-1976. IEEE - Institute of Electrical and Electronics Engineers. doi:10.1109/TGRS.2018.2870301 <https://doi.org/10.1109/TGRS.2018.2870301>. ISSN 0196-2892. Radarkonzepte Zeitschriftenbeitrag PeerReviewed 2019 ftdlr https://doi.org/10.1109/TGRS.2018.2870301 2023-11-06T00:24:02Z The analysis of data from an airborne synthetic aperture radar (SAR) campaign in the percolation zone of Greenland revealed an interferometric coherence undulation behavior with respect to vertical wavenumber, which cannot be explained with existing models. We propose a model extension that accounts for scattering from distinct layers below the surface. Simulations show that the periodicity of the coherence undulation is mainly driven by the vertical distance between dominant subsurface layers, while the amplitude of the undulation is determined by the ratio between scattering from distinct layers and scattering from the firn volume. We use the model to interpret quad-pol SAR data at X-, C-, S-, L-, and P-bands. The inferred layer depths match layer detections in ground-based radar data and in situ measurements. We conclude that in the percolation zone, scattering from subsurface layers has to be taken into account to correctly interpret SAR data and demonstrate the potential to retrieve geophysical information about the vertical subsurface structure. Article in Journal/Newspaper Greenland Ice Sheet German Aerospace Center: elib - DLR electronic library Greenland IEEE Transactions on Geoscience and Remote Sensing 57 4 1963 1976 |
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German Aerospace Center: elib - DLR electronic library |
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English |
topic |
Radarkonzepte |
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Radarkonzepte Fischer, Georg Papathanassiou, Konstantinos Hajnsek, Irena Modeling Multifrequency Pol-InSAR Data From the Percolation Zone of the Greenland Ice Sheet |
topic_facet |
Radarkonzepte |
description |
The analysis of data from an airborne synthetic aperture radar (SAR) campaign in the percolation zone of Greenland revealed an interferometric coherence undulation behavior with respect to vertical wavenumber, which cannot be explained with existing models. We propose a model extension that accounts for scattering from distinct layers below the surface. Simulations show that the periodicity of the coherence undulation is mainly driven by the vertical distance between dominant subsurface layers, while the amplitude of the undulation is determined by the ratio between scattering from distinct layers and scattering from the firn volume. We use the model to interpret quad-pol SAR data at X-, C-, S-, L-, and P-bands. The inferred layer depths match layer detections in ground-based radar data and in situ measurements. We conclude that in the percolation zone, scattering from subsurface layers has to be taken into account to correctly interpret SAR data and demonstrate the potential to retrieve geophysical information about the vertical subsurface structure. |
format |
Article in Journal/Newspaper |
author |
Fischer, Georg Papathanassiou, Konstantinos Hajnsek, Irena |
author_facet |
Fischer, Georg Papathanassiou, Konstantinos Hajnsek, Irena |
author_sort |
Fischer, Georg |
title |
Modeling Multifrequency Pol-InSAR Data From the Percolation Zone of the Greenland Ice Sheet |
title_short |
Modeling Multifrequency Pol-InSAR Data From the Percolation Zone of the Greenland Ice Sheet |
title_full |
Modeling Multifrequency Pol-InSAR Data From the Percolation Zone of the Greenland Ice Sheet |
title_fullStr |
Modeling Multifrequency Pol-InSAR Data From the Percolation Zone of the Greenland Ice Sheet |
title_full_unstemmed |
Modeling Multifrequency Pol-InSAR Data From the Percolation Zone of the Greenland Ice Sheet |
title_sort |
modeling multifrequency pol-insar data from the percolation zone of the greenland ice sheet |
publisher |
IEEE - Institute of Electrical and Electronics Engineers |
publishDate |
2019 |
url |
https://elib.dlr.de/118546/ https://elib.dlr.de/118546/1/FINAL%20VERSION.PDF https://ieeexplore.ieee.org/document/8490682 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_relation |
https://elib.dlr.de/118546/1/FINAL%20VERSION.PDF Fischer, Georg und Papathanassiou, Konstantinos und Hajnsek, Irena (2019) Modeling Multifrequency Pol-InSAR Data From the Percolation Zone of the Greenland Ice Sheet. IEEE Transactions on Geoscience and Remote Sensing, 57 (4), Seiten 1963-1976. IEEE - Institute of Electrical and Electronics Engineers. doi:10.1109/TGRS.2018.2870301 <https://doi.org/10.1109/TGRS.2018.2870301>. ISSN 0196-2892. |
op_doi |
https://doi.org/10.1109/TGRS.2018.2870301 |
container_title |
IEEE Transactions on Geoscience and Remote Sensing |
container_volume |
57 |
container_issue |
4 |
container_start_page |
1963 |
op_container_end_page |
1976 |
_version_ |
1784271538043748352 |