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CLEAN technique in strip-map SAR for high-quality imaging

Ghaemi, Hirad and Börner, Thomas and Galletti, Michele and Viberg, Mats and Gekat, Frank (2009) CLEAN technique in strip-map SAR for high-quality imaging. IEEE Aerospace Conference, 2009-03-07 - 2009-03-14, Big Sky, MT, USA.

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Abstract

The maximum obtainable resolution of a strip-map synthetic aperture radar (SAR) system can be retained by simply avoiding weighting, or tapering, data samples in the along-track compression process. However, this will lead to hazardous artifacts caused by strong sidelobes of the corresponding adjacent scatterers whose interference might severely weaken the desired targets or even introduce false targets. On the other hand, some residual artifacts, even after tapering process, may still deteriorate the quality (contrast) of the SAR image. These issues can be remedied by applying the so-called CLEAN technique, which can mitigate these ill-effects in strip-map SAR imagery while maintaining the maximum resolution. This, indeed, is carried out as a post processing step, i.e., after the azimuth compression is accomplished, in the SAR system. The objective of this paper is to extend the CLEAN technique to strip-map SAR system to produce high-quality images with a very good along-track resolution. The algorithm is then applied to data from a ground-based circular SAR (CSAR) system to verify its implementation as well as this new application of the CLEAN technique.

Document Type:Conference or Workshop Item (Paper)
Title:CLEAN technique in strip-map SAR for high-quality imaging
Authors:
AuthorsInstitution or Email of Authors
Ghaemi, Hiradghaemi_hirad@hotmail.com
Börner, ThomasUNSPECIFIED
Galletti, MicheleUNSPECIFIED
Viberg, MatsUNSPECIFIED
Gekat, FrankUNSPECIFIED
Date:March 2009
Refereed publication:No
In ISI Web of Science:No
Page Range:p. 7
Status:Published
Keywords:SAR, CSAR, CLEAN, signal processing, rotating SAR
Event Title:IEEE Aerospace Conference
Event Location:Big Sky, MT, USA
Event Type:Conference
Event Dates:2009-03-07 - 2009-03-14
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 SAR-Expert-Support-Lab (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Radar Concepts
Deposited By: Dr.rer.nat. Thomas Börner
Deposited On:14 Jul 2009 11:57
Last Modified:12 Dec 2013 20:38

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