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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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