Journal of Systems Engineering and Electronics ›› 2007, Vol. 18 ›› Issue (4): 745-750.

• DEFENCE ELECTRONICS TECHNOLOGY • Previous Articles     Next Articles

Scale transform algorithm used in FMCW SAR data processing

Jiang Zhihong, Kan Huangfu & Wan Jianwei   

  1. School of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073, P. R. China
  • Online:2007-12-24 Published:2010-01-03


The frequency-modulated continuous-wave (FMCW) synthetic aperture radar (SAR) is a light-weight, cost-effective, high-resolution imaging radar, which is suitable for a small flight platform. The signal model is derived for FMCW SAR used in unmanned aerial vehicles (UAV) reconnaissance and remote sensing. An appropriate algorithm is proposed. The algorithm performs the range cell migration correction (RCMC) for continuous non-chirped raw data using the energy invariance of the scaling of a signal in the scale domain. The azimuth processing is based on step transform without geometric resampling operation. The complete derivation of the algorithm is presented. The algorithm performance is shown by simulation results.