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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: |
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| 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 | ||||||||
| HGF - Program: | Space | ||||||||
| 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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