Newton time-extracting wavelet transform: An effective tool for characterizing frequency-varying signals with weakly-separated components and theoretical analysis

•We convert the group delay estimation problem into solving the fixed point problem and propose a new group delay estimator.•We propose a Newton time-extracting wavelet transform, which can generate a highly concentrated time-frequency representation.•We define a class of weakly-separated frequency-...

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Veröffentlicht in:	Signal processing 2023-08, Vol.209, p.109017, Article 109017
Hauptverfasser:	Li, Wenting, Auger, François, Zhang, Zhuosheng, Zhu, Xiangxiang
Format:	Artikel
Sprache:	eng
Schlagworte:	Engineering Sciences Group delay Newton time-extracting wavelet transform Ridge Signal and Image processing Signal reconstruction Time reassignment operator Time-frequency analysis
Online-Zugang:	Volltext
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