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High Resolution Wide Swath SAR Imaging - System Performance and Influence of Perturbations

Gebert, Nicolas and Krieger, Gerhard and Moreira, Alberto (2005) High Resolution Wide Swath SAR Imaging - System Performance and Influence of Perturbations. In: International Radar Symposium, IRS 2005, Proceedings, pp. 49-54. International Radar Symposium, 2005-09-06 - 2005-09-08, Berlin, Germany.

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The displaced phase centre (DPC) technique enables a wide swath SAR with high azimuth resolution. In classic DPC systems, pulse repetition frequency (PRF), sensor velocity and antenna length underlie a stringent timing requirement to en­sure uniform sampling of the syn­thetic aperture. This constraint can be overcome by the use of a recon­struction algorithm, which enables a recovery of the unambiguous azimuth (Doppler) spec­trum also in case of a non-uniform sampling. This paper illustrates the principle of the reconstruction and ex­plains its limitations and the impacts on the ambiguity suppression. The potential of the algorithm when applied to DPC systems like TerraSAR-X with its split receive antenna is demon­strated and the benefits re­sulting from th e additional receive ap­erture re­garding swat h width and resolution are pointed out. Further on, the impact of ad­ditive and phase noise on the recon­struction and its sensitivity against these perturbations are shown.

Document Type:Conference or Workshop Item (Paper)
Additional Information:LIDO-Berichtsjahr=2005
Title:High Resolution Wide Swath SAR Imaging - System Performance and Influence of Perturbations
AuthorsInstitution or Email of Authors
Gebert, NicolasUNSPECIFIED
Krieger, GerhardUNSPECIFIED
Moreira, AlbertoUNSPECIFIED
Journal or Publication Title:International Radar Symposium, IRS 2005, Proceedings
Page Range:pp. 49-54
German Institute of Navigation - Deutsche Gesellschaft für Ortun, UNSPECIFIED
Keywords:High resolution Wide Swath SAR Imaging, HRWS, Digital Beamforming
Event Title:International Radar Symposium
Event Location:Berlin, Germany
Event Type:international Conference
Event Dates:2005-09-06 - 2005-09-08
Organizer:German Institute of Navigation - Deutsche Gesellschaft für Ortung und Navigation e.V. (DGON)
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 - Vorhaben Entwicklung eines Mini-SAR (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute
Deposited By: Nicolas Gebert
Deposited On:03 Feb 2006
Last Modified:12 Dec 2013 20:07

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