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Non-linear SAR data processing by time-domain back-projection


Frey, O; Magnard, C; Rüegg, M; Meier, E (2008). Non-linear SAR data processing by time-domain back-projection. In: Informationstechnische Gesellschaft im VDE. EUSAR 2008. Friedrichshafen: VDE Verlag, 165 -168.

Abstract

Focusing of conventional stripmap SAR data assumes a straight recording track of the sensor platform. Small deviations from that linear trajectory are corrected by motion compensation steps while keeping the assumption of a linear acquisition path. In the following, the processing of SAR data from non-linear tracks is discussed as may originate from small aircraft or drones flying at low altitude. They fly not a straight track but one dependent on topography, influences of weather and wind, or dependent on the shape of dedicated areas of interest such as rivers or traffic routes. Experimental data featuring a drop in height, a double bend and a 90-degree curve have been processed using a time-domain back-projection approach.
The data was acquired by the German Aerospace Center’s E-SAR L-band system.

Focusing of conventional stripmap SAR data assumes a straight recording track of the sensor platform. Small deviations from that linear trajectory are corrected by motion compensation steps while keeping the assumption of a linear acquisition path. In the following, the processing of SAR data from non-linear tracks is discussed as may originate from small aircraft or drones flying at low altitude. They fly not a straight track but one dependent on topography, influences of weather and wind, or dependent on the shape of dedicated areas of interest such as rivers or traffic routes. Experimental data featuring a drop in height, a double bend and a 90-degree curve have been processed using a time-domain back-projection approach.
The data was acquired by the German Aerospace Center’s E-SAR L-band system.

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Contributors:Informationstechnische Gesellschaft im VDE (ITG), Deutsche Forschungsanstalt für Luft- und Raumfahrt (DLR), European Aeronautic Defense and Space Company (EADS), Forschungsgesellschaft für Angewandte Naturwissenschaften (FGAN)
Item Type:Book Section, not refereed, original work
Communities & Collections:07 Faculty of Science > Institute of Geography
Dewey Decimal Classification:910 Geography & travel
Language:English
Date:2008
Deposited On:07 Jan 2009 12:53
Last Modified:05 Apr 2016 12:46
Publisher:VDE Verlag
Number:1-4
ISBN:978-3-8007-3084-1
Additional Information:7th European Conference on Synthetic Aperture Radar, June 2-5 2008, Friedrichshafen
Official URL:http://www.vde-verlag.de/data/prcd.php?docid=453084226&loc=de
Related URLs:http://www.vde-verlag.de/data/buecher.php?action=bookdetail&vertriebsnr=453084&rubrik=Proceedings&sort=ERSCHJAHR&direction=DESC&pg=1
Permanent URL: http://doi.org/10.5167/uzh-9333

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