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Tomographic focusing by combining time-domain back-projection and multi-looking based focusing techniques


Frey, O; Meier, E (2008). Tomographic focusing by combining time-domain back-projection and multi-looking based focusing techniques. In: Informationstechnische Gesellschaft im VDE. EUSAR 2008. Berlin: VDE Verlag, 73-76.

Abstract

Various tomographic processing methods have been investigated in recent years. The quality of the focused tomographic image is usually limited by several factors. In particular, Fourier-based focusing methods are susceptible to irregular and sparse sampling, two problems that are unavoidable in case of multi-pass, multi-baseline SAR data acquired by an airborne system. Neither time-domain back-projection (TDBP) processing, although providing a very accurate processing framework, is able to overcome the problem of ambiguous target detection in the tomographic image. In this paper, a possible extension of the TDBP approach to multi-looking based tomographic focusing methods like standard beamforming and Capon beamforming is discussed.

Abstract

Various tomographic processing methods have been investigated in recent years. The quality of the focused tomographic image is usually limited by several factors. In particular, Fourier-based focusing methods are susceptible to irregular and sparse sampling, two problems that are unavoidable in case of multi-pass, multi-baseline SAR data acquired by an airborne system. Neither time-domain back-projection (TDBP) processing, although providing a very accurate processing framework, is able to overcome the problem of ambiguous target detection in the tomographic image. In this paper, a possible extension of the TDBP approach to multi-looking based tomographic focusing methods like standard beamforming and Capon beamforming is discussed.

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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 12:49
Last Modified:26 Jan 2017 08:42
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=453084073&loc=de
Related URLs:http://www.vde-verlag.de/data/buecher.php?action=bookdetail&vertriebsnr=453084&rubrik=Proceedings&sort=ERSCHJAHR&direction=DESC&pg=1

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