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Sidelobe Suppression Using the SVA Method for SAR Images and Sounding Radars

Fischer, Jens and Pupeza, E. P. Ioachim and Scheiber, Rolf (2006) Sidelobe Suppression Using the SVA Method for SAR Images and Sounding Radars. VDE Verlag GmbH. European Conference on Synthetic Aperture Radar (EUSAR), 2006-05-16 - 2006-05-18, Dresden, Germany.

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Abstract

The method of Spatially Variant Apodization (SVA) has been developed for eliminating and suppressing sidelobes in SAR images as far as possible while maintaining the original image resolution. In this paper, we investigate the applicability of SVA to E-SAR data acquired in standard side-looking geometry and for the first time to the nadir looking sounder mode. In contrast to usual SAR imagery, sounding radar data feature a very strong backscatter from nadir due to directly downlooking rather than slant-looking. The strong nadir echo corresponds to the air-ice interface directly below the aircraft. It causes accordingly severe sidelobes interfering neighboring pixels in the data such that snow or ice layers close to the surface usually cannot be detected. The paper describes the SVA implementation into SAR processing and concludes that SVA is capable to achieve a better image resolution in both kind of data, usual SAR imagery and sounding radar data, reducing the sidelobe level at the same time.

Item URL in elib:https://elib.dlr.de/22268/
Document Type:Conference or Workshop Item (Paper, Poster)
Title:Sidelobe Suppression Using the SVA Method for SAR Images and Sounding Radars
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Fischer, JensUNSPECIFIEDUNSPECIFIED
Pupeza, E. P. IoachimTechnische Universität, Braunschweig, GermanyUNSPECIFIED
Scheiber, RolfUNSPECIFIEDUNSPECIFIED
Date:2006
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:p. 4
Publisher:VDE Verlag GmbH
Status:Published
Keywords:Spatially Variant Apodization, SVA, SAR, E-SAR, sidelobe suppression, SVA method, sounding, ice
Event Title:European Conference on Synthetic Aperture Radar (EUSAR)
Event Location:Dresden, Germany
Event Type:international Conference
Event Dates:2006-05-16 - 2006-05-18
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
Deposited By: Fischer, Jens
Deposited On:29 May 2006
Last Modified:31 Jul 2019 19:16

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