Hilbert-Huang Transform Analysis of Hydrological and Environmental Time Series
A. R. RaoE.-C. Hsu
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Hilbert-Huang Transform Analysis of Hydrological and Environmental Time Series

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To accommodate the inherent non-linearity and non-stationarity of many natural time series, empirical mode decomposition (EMD) and Hilbert-Huang transform (HHT) provide an adaptive and efficient method. The HHT is based on the local characteristic time scale of the data. The HHT method provides not only a precise definition in time-frequency representation than the other conventional signal processing methods, but also more physically meaningful interpretation of the underlying dynamic processes. The EMD also works as a filter to extract the variability of signals with different scales and is ...