Heister, Anton und Scheiber, Rolf (2017) Demonstration of Sparse Signal Reconstruction for Radar Imaging of Ice Sheets. European Geosciences Union (EGU), 2017-04-24 - 2017-04-26, Vienna, Austria.
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Kurzfassung
Conventional processing of ice-sounder data produces 2-D images of the ice sheet and bed, where the two dimensions are along-track and depth, while the across-track direction is fixed to nadir. The 2-D images contain information about the topography and radar reflectivity of the ice sheet’s surface, bed, and internal layers in the along-track direction. Having multiple antenna phase centers in the across-track direction enables the production of 3-D images of the ice sheet and bed. Compared to conventional 2-D images, these contain additional information about the surface and bed topography, and orientation of the internal layers over a swath in the across-track direction. We apply a 3-D SAR tomographic ice-sounding method based on sparse signal reconstruction to the data collected by Center for Remote Sensing of Ice Sheets (CReSIS) in 2008 in Greenland using their multichannel coherent radar depth sounder (MCoRDS). The MCoRDS data have 16 effective phase centers which allows us to better understand the performance of the method. Lastly we offer sparsity improvement by including wavelet dictionaries into the reconstruction.The results show improved scene feature resolvability in across-track direction compared to MVDR beamformer.
elib-URL des Eintrags: | https://elib.dlr.de/111950/ | ||||||||||||
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Dokumentart: | Konferenzbeitrag (Poster) | ||||||||||||
Titel: | Demonstration of Sparse Signal Reconstruction for Radar Imaging of Ice Sheets | ||||||||||||
Autoren: |
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Datum: | 30 Januar 2017 | ||||||||||||
Referierte Publikation: | Nein | ||||||||||||
Open Access: | Ja | ||||||||||||
Gold Open Access: | Nein | ||||||||||||
In SCOPUS: | Nein | ||||||||||||
In ISI Web of Science: | Nein | ||||||||||||
Status: | veröffentlicht | ||||||||||||
Stichwörter: | SAR tomography, ice sounding, sparse signal reconstruction | ||||||||||||
Veranstaltungstitel: | European Geosciences Union (EGU) | ||||||||||||
Veranstaltungsort: | Vienna, Austria | ||||||||||||
Veranstaltungsart: | internationale Konferenz | ||||||||||||
Veranstaltungsbeginn: | 24 April 2017 | ||||||||||||
Veranstaltungsende: | 26 April 2017 | ||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||
HGF - Programm: | Raumfahrt | ||||||||||||
HGF - Programmthema: | Erdbeobachtung | ||||||||||||
DLR - Schwerpunkt: | Raumfahrt | ||||||||||||
DLR - Forschungsgebiet: | R EO - Erdbeobachtung | ||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | R - SAR-Methoden | ||||||||||||
Standort: | Oberpfaffenhofen | ||||||||||||
Institute & Einrichtungen: | Institut für Hochfrequenztechnik und Radarsysteme > SAR-Technologie | ||||||||||||
Hinterlegt von: | Heister, Anton | ||||||||||||
Hinterlegt am: | 24 Apr 2017 07:39 | ||||||||||||
Letzte Änderung: | 24 Apr 2024 20:16 |
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