A block time-recursive algorithm for the computation of short-time Fourier transform and its application to ISAR imaging

In this paper, we present a fast block time-recursive algorithm for the computation of short-time Fourier transform (STFT), and apply the algorithm to inverse synthetic aperture radar (ISAR) image processing. Simulation results are given and the computational complexity is discussed. The block time-recursive algorithm provides a fast vehicle for processing ISAR images on a real-time basis.