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  • Research Article
  • Open Access

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

EURASIP Journal on Advances in Signal Processing20062007:059704

  • Received: 26 January 2006
  • Accepted: 29 August 2006
  • Published:


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 ( )-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 ( )-algorithm. Simulation results will validate the focusing and efficiency performances of the modified wave number domain algorithm.


  • Migration
  • Information Technology
  • Quantum Information
  • Efficiency Performance
  • Computational Load

Authors’ Affiliations

Optronics and Microwave Department, Royal Military Academy, Renaissancelaan 30, Brussel, 1000, Belgium
Deutsches Zentrum für Luft-und Raumfahrt (DLR) e.V., Postfach 1116, Wessling, 82230, Germany


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© Marijke Vandewal et al. 2007

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.