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Processing Of Circular SAR Trajectories With Fast Factorized Back-Projection

Ponce, Octavio and Prats, Pau and Rodriguez-Cassola, Marc and Scheiber, Rolf and Reigber, Andreas (2011) Processing Of Circular SAR Trajectories With Fast Factorized Back-Projection. In: Proceedings of the IEEE International Geoscience and Remote Sensing Symposium (IGARSS), pp. 3692-3695. IEEE. IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2011-07-24 - 2011-07-29, Vancouver, Canada.

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Abstract

This paper describes the implementation of an efficient implementation of a Fast Factorized Back Projection (FFBP) algorithm for Circular SAR (CSAR) trajectories for real airborne data. Unlike Fourier-domain based focusing processors, this approach considers the azimuth variance and topography changes with high accuracy, while improving significantly the computational time factor in comparison with the direct Back Projection (BP). To further accelerate the focusing, the circular FFBP was implemented also on a Graphics Processor Unit (GPU). In the second part of the document is shown a fully polarimetric image of the region of Kaufbeuren, Germany, (acquired by the DLR’s E-SAR system) focused with this method to the theoretical limit of lambda over four. Thus, the efficiency, accuracy and performance of the circular FFBP is demonstrated, as well as the potential of CSAR when focusing over 360 ◦.

Document Type:Conference or Workshop Item (Speech)
Title:Processing Of Circular SAR Trajectories With Fast Factorized Back-Projection
Authors:
AuthorsInstitution or Email of Authors
Ponce, OctavioUNSPECIFIED
Prats, PauUNSPECIFIED
Rodriguez-Cassola, MarcUNSPECIFIED
Scheiber, RolfUNSPECIFIED
Reigber, AndreasUNSPECIFIED
Date:28 July 2011
Journal or Publication Title:Proceedings of the IEEE International Geoscience and Remote Sensing Symposium (IGARSS)
Refereed publication:Yes
Page Range:pp. 3692-3695
Publisher:IEEE
Status:Published
Keywords:Circular SAR (CSAR), Fast Back Projection (FBP), focusing, polarimetry, Graphics Processor Unit (GPU)
Event Title:IEEE International Geoscience and Remote Sensing Symposium (IGARSS)
Event Location:Vancouver, Canada
Event Type:international Conference
Event Dates:2011-07-24 - 2011-07-29
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 Flugzeug-SAR (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > SAR Technology
Deposited By: Octavio Ponce Madrigal
Deposited On:17 Jun 2011 09:43
Last Modified:08 May 2014 23:22

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