Spotlight SAR data focusing based on a two-step processing approach

  title={Spotlight SAR data focusing based on a two-step processing approach},
  author={Riccardo Lanari and Manlio Tesauro and Eugenio Sansosti and Gianfranco Fornaro},
  journal={IEEE Trans. Geosci. Remote. Sens.},
The authors present a new spotlight SAR data-focusing algorithm based on a two-step processing strategy that combines the advantages of two commonly adopted processing approaches: the efficiency of SPECAN algorithms and the precision of stripmap focusing techniques. The first step of the proposed algorithm implements a linear and space-invariant azimuth filtering that is carried out via a deramping-based technique representing a simplified version of the SPECAN approach. This operation allows… 

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