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Efficient and Precise Processing for Squinted Spotlight SAR through a Modified Stolt Mapping

Vandewal, Marijke and Speck, Rainer and Süß, Helmut (2007) Efficient and Precise Processing for Squinted Spotlight SAR through a Modified Stolt Mapping. EURASIP Journal on Advances in Signal Processing, pp. 1-7. Hindawi Publishing Corporation. DOI: 10.1155/2007/59704.

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Official URL: http://hindawi.com/GetArticle.aspx?doi=10.1155/2007/59704

Abstract

Processing of squinted SAR spotlight data is a challenge because of the significant range migration effects of the raw data over the coherent aperture time. Although in theory the (ω, k)-algorithm takes care of these aspects, its digital implementation requires a time-consuming interpolation step. Moreover, the limited precision of this interpolation can introduce distortions at the edges of the final image especially for squinted geometries. A wave number domain processing using a modified Stolt mapping will be developed and analyzed to enhance the quality of the final SAR image. Additionally, the proposed algorithm has a decreased computational load compared to the original (ω,k)-algorithm. Simulation results will validate the focusing and efficiency performances of the modified wave number domain algorithm.

Document Type:Article
Title:Efficient and Precise Processing for Squinted Spotlight SAR through a Modified Stolt Mapping
Authors:
AuthorsInstitution or Email of Authors
Vandewal, MarijkeRoyal Military Academy, Belgium
Speck, RainerUNSPECIFIED
Süß, HelmutUNSPECIFIED
Date:2007
Journal or Publication Title:EURASIP Journal on Advances in Signal Processing
Refereed publication:Yes
In ISI Web of Science:Yes
DOI:10.1155/2007/59704
Page Range:pp. 1-7
Publisher:Hindawi Publishing Corporation
Status:Published
Keywords:Synthetic Aperture Radar, SAR, Processing, Spotlight, Stolt
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 - Projekt sicherheitsrelevante Erdbeobachtung (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Reconnaissance and Security
Deposited By: Dr.-Ing. Rainer Speck
Deposited On:22 Dec 2006
Last Modified:27 Apr 2009 13:22

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