Journal
IEEE SIGNAL PROCESSING LETTERS
Volume 17, Issue 3, Pages 293-296Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LSP.2009.2038511
Keywords
Coarse-to-fine strategy; compact domain; fractional Fourier transform; maximum amplitude
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Funding
- Heilongjiang Province Science Foundation for Youths, China
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A maximum-amplitude-based coarse-to-fine algorithm is proposed with two novel ideas highlighted: adopting the maximum value of the fractional Fourier amplitude spectrum to measure the compactness of a signal, and using a coarse-to-fine strategy to speed up the searching process. The simulation results on synthetic and real signals show the validity of the proposed method.
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