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SAR motion compensation based on signal processing method

For airborne synthetic aperture radar (SAR) without precise measuring systems, signal-processing method can play an important role in motion compensation system. The main ideal is to extract all the necessary motions or Doppler parameters of the aircraft by evaluating the azimuth spectra of the radar raw data. The reflectivity displacement method (RDM) algorithm is described in this paper, and tested with the actual experimental data.