A fast and accurate chirp rate estimation algorithm based on the fractional Fourier transform. Serbes, A. & Aldimashki, O. In 2017 25th European Signal Processing Conference (EUSIPCO), pages 1105-1109, Aug, 2017.
A fast and accurate chirp rate estimation algorithm based on the fractional Fourier transform [pdf]Paper  doi  abstract   bibtex   
In this work, a fast and accurate chirp-rate estimation algorithm is presented. The algorithm is based on the fractional Fourier transform. It is shown that utilization of the golden section search algorithm to find the maximum magnitude of the fractional Fourier transform domains not only accelerates the process, but also increases the accuracy in a noisy environment. Simulation results validate the proposed algorithm and show that the accuracy of parameter estimation nearly achieves the Cramer-Rao lower bound for SNR values as low as -7dB.

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