Extension of Range Migration Algorithm for Airborne SAR Data Processing

  • Shin, Hee-Sub (Dept. of EECS and Radiowave Detection Research Center, KAIST) ;
  • Song, Won-Gyu (Dept. of EECS and Radiowave Detection Research Center, KAIST) ;
  • Son, Jun-Won (Dept. of EECS and Radiowave Detection Research Center, KAIST) ;
  • Jung, Yong-Hwan (Dept. of EECS and Radiowave Detection Research Center, KAIST) ;
  • Lim, Jong-Tae (Dept. of EECS and Radiowave Detection Research Center, KAIST)
  • Published : 2005.06.02

Abstract

Several algorithms have been developed for the data processing of spotlight synthetic aperture radar (SAR). In particular, the range migration algorithm (RMA) does not assume that illuminating wavefronts are planar. Also, a high resolution image can be obtained by the RMA. This paper introduces an extension of the original RMA to enable a more efficient airborne SAR data processing. We consider more general motion and scene than the original RMA. The presented formulation is analyzed by using the principle of the stationary phase. Finally, the extended algorithm is tested with numerical simulations using the pulsed spotlight SAR.

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