Abstract
Fractional Fourier transform (FrFT) is a kind of generalized Fourier transform and linear frequency modulation signals can be well focused after FrFT. Meanwhile motion error is an important factor affecting SAR (synthetic aperture radar) resolution, aiming at the problem that the effect of error elimination is not obvious in processing non-stationary mo- tion error using the conventional SAR imaging algorithm, FrFT is combined with two-step motion compensation tech- nique and wavenumber domain imaging algorithm in this paper. Simulation results and imaging results of real SAR data show that the proposed algorithm indeed eliminates the influence of motion error effectively. (the real SAR data provided by Institute of Electronics, Chinese Academy of Sciences).
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