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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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.
|Title:||Efficient and Precise Processing for Squinted Spotlight SAR through a Modified Stolt Mapping|
|Journal or Publication Title:||EURASIP Journal on Advances in Signal Processing|
|In ISI Web of Science:||Yes|
|Page Range:||pp. 1-7|
|Publisher:||Hindawi Publishing Corporation|
|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)|
|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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