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Advanced Multi-Channel SAR Imaging - Measured Data Demonstration

Gebert, Nicolas und Almeida, Felipe und Krieger, Gerhard (2009) Advanced Multi-Channel SAR Imaging - Measured Data Demonstration. In: Proceedings of the International Radar Symposium (IRS), Seiten 525-529. International Radar Symposium (IRS), 2009-09-09 - 2009-09-11, Hamburg, Germany.

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Synthetic Aperture Radar (SAR) is a well-established technique for remote sensing of the Earth. However, conventional SAR systems relying on only a single transmit and receive aperture are not capable of imaging a wide swath with high spatial resolution. Multi-channel SAR concepts, such as systems based on multiple receive apertures in azimuth, promise to overcome these restrictions, thus enabling high-resolution wide-swath imaging. Analysis revealed that these systems imperatively require sophisticated digital processing of the received signals in order to guarantee full performance independently of the spatial sample distribution imposed by the applied pulse repetition frequency (PRF). A suitable algorithm to cope with these challenges of multi-channel data is given by the “multi-channel reconstruction algorithm”, which demonstrated in comprehensive analysis and system design examples its potential for high perform-ance SAR imaging. In this context, various optimization strategies were investigated and aspects of operating multi-channel systems in burst modes such as ScanSAR or TOPS were discussed. Furthermore, a first proof-of-principle showed the algorithm’s applicability to measured multi-channel X-band data gathered by the German Aerospace Cen-ter’s (DLR) airborne F-SAR system. As a next step in the framework of multi-channel azimuth processing, this paper builds on the results recalled above and continues two paths. Firstly, focus is turned to further optimization of the proc-essing algorithm by investigating the classical Space-Time Adaptive Processing (STAP) applied to SAR. Secondly, attention is turned to the analysis of the measured multi-channel data by elaborating the impact and compensation of channel mismatch and by verifying the derived theory.

Dokumentart:Konferenzbeitrag (Vortrag, Paper)
Titel:Advanced Multi-Channel SAR Imaging - Measured Data Demonstration
AutorenInstitution oder E-Mail-Adresse der Autoren
Datum:September 2009
Erschienen in:Proceedings of the International Radar Symposium (IRS)
Referierte Publikation:Nein
In ISI Web of Science:Nein
Seitenbereich:Seiten 525-529
HerausgeberInstitution und/oder E-Mail-Adresse der Herausgeber
German Institute of Navigation - Deutsche Gesellschaft für Ortun, NICHT SPEZIFIZIERT
Name der Reihe:International Radar Symposium (IRS) Proceedings
Stichwörter:High resolution Wide Swath SAR Imaging, HRWS, Digital Beamforming, Multi-Aperture SAR Processing, Multi-channel data, F-SAR, STAP
Veranstaltungstitel:International Radar Symposium (IRS)
Veranstaltungsort:Hamburg, Germany
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:2009-09-09 - 2009-09-11
Veranstalter :German Institute of Navigation - Deutsche Gesellschaft für Ortung und Navigation e.V. (DGON)
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Weltraum (alt)
HGF - Programmthema:W EO - Erdbeobachtung
DLR - Schwerpunkt:Weltraum
DLR - Forschungsgebiet:W EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):W - Vorhaben Entwicklung eines Mini-SAR (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Hochfrequenztechnik und Radarsysteme > Radarkonzepte
Institut für Hochfrequenztechnik und Radarsysteme
Hinterlegt von: Nicolas Gebert
Hinterlegt am:24 Mär 2009
Letzte Änderung:12 Dez 2013 20:36

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