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Efficient Time-Domain Focussing for General Bistatic SAR Configurations: Bistatic Fast Factorised Backprojection

Rodriguez-Cassola, Marc and Prats, Pau and Krieger, Gerhard and Moreira, Alberto (2010) Efficient Time-Domain Focussing for General Bistatic SAR Configurations: Bistatic Fast Factorised Backprojection. In: Proceedings of the European Conference on Synthetic Aperture Radar (EUSAR), pp. 1050-1053. VDE Verlag GmbH. European Conference on Synthetic Aperture Radar (EUSAR), 2010-06-08 - 2010-06-10, Aachen, Germany.

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Abstract

Due to the lack of an appropriate symmetry in the acquisition geometry, generalised bistatic SAR cannot benefit from the two main properties of low-to-moderate resolution monostatic SAR: azimuth-invariance and topography-insensitivity. Precise accommodation of azimuth-variance and topography is a real challenge for efficent algorithms working in the Fourier-domain, but can be quite naturally handled by time-domain approaches. We report about the first efficient and practical implementation of a generalised bistatic SAR imaging algorithm with an accurate accommodation of these two effects. The algorithm has a common structure with the monostatic fast factorised backprojection (FFBP), and is therefore based on subaperture processing. The algorithm is tested with both simulated and actual bistatic SAR data. The actual data correspond to the spaceborne-airborne experiment between TerraSAR-X and F-SAR performed in 2007. The presented approach proves its suitability for precise imaging of any given scene acquired by any given bistatic SAR configuration.

Document Type:Conference or Workshop Item (Speech)
Title:Efficient Time-Domain Focussing for General Bistatic SAR Configurations: Bistatic Fast Factorised Backprojection
Authors:
AuthorsInstitution or Email of Authors
Rodriguez-Cassola, MarcUNSPECIFIED
Prats, PauUNSPECIFIED
Krieger, GerhardUNSPECIFIED
Moreira, AlbertoUNSPECIFIED
Date:10 June 2010
Journal or Publication Title:Proceedings of the European Conference on Synthetic Aperture Radar (EUSAR)
Refereed publication:Yes
In ISI Web of Science:No
Page Range:pp. 1050-1053
Publisher:VDE Verlag GmbH
Status:Published
Keywords:Bistatic SAR, Processing, SAR Image formation
Event Title:European Conference on Synthetic Aperture Radar (EUSAR)
Event Location:Aachen, Germany
Event Type:international Conference
Event Dates:2010-06-08 - 2010-06-10
Organizer:VDE
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 > Radar Concepts
Microwaves and Radar Institute > SAR Technology
Deposited By: Marc Rodriguez Cassola
Deposited On:24 Jun 2010 13:35
Last Modified:08 May 2014 23:22

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