SFFT based ISAR Imaging

Abstract

Basing on the characteristics of radar signal and the algorithms' applicability and performance of different algorithms, this paper selects scientifically the most suitable option for radar imaging among these four sparse fast Fourier transform (SFFT) algorithms: SFFTv1,SFFTv2, SFFTv3 and PS; Evaluates each algorithm's accuracy through simulation; Applies SFFT to Inverse Synthetic Aperture Radar(ISAR) imaging program for the stepped frequency radar; Through an experiment, author studies SFFT's imaging efficiency and gets a conclusion that: SFFT is able to reduce the run time into half at a low loss of image quality.