Adaptive directional ridge prediction tracker for instantaneous frequency estimation

• Published in: Signal processing Vol. 209; p. 109035
• Main Authors: Miao, Yongchun, Qasem, Zeyad A.H., Li, Yingsong
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.08.2023
• Subjects: Instantaneous frequency estimation; instantaneous rotating operator; intersecting components; short-time Fourier transform; time-frequency representation; instantaneous rotating operator; intersecting components; Instantaneous frequency estimation; time-frequency representation; short-time Fourier transform
• ISSN: 0165-1684; 1872-7557
• DOI: 10.1016/j.sigpro.2023.109035

•A novel adaptive directional ridge prediction tracker is proposed for the instantaneous frequency estimation of signals with intersecting components at the low-resolution TFR.•Instantaneous rotating operator is defined to provide direction information at each time and frequency point leading to an accurate prediction of the ridge.•The proposed tracker utilizes the time-frequency amplitude and direction information jointly to tune the predicted ridge.•The method can achieve an IF estimation without prior knowledge to the number of components.•The performance of the method is illustrated using both synthetic and whale signals. A novel adaptive directional ridge prediction tracker is proposed for the instantaneous frequency estimation of signals with intersecting components. For this purpose, instantaneous rotating operator is defined to provide direction information at each time and frequency point leading to an accurate prediction of the ridge. The proposed tracker utilizes the time-frequency amplitude and direction information jointly to tune the predicted ridge. The outperformance of the proposed algorithm is demonstrated against its benchmarks using synthetic and real signals.