Methods for detection and characterization of signals in noisy data with the Hilbert-Huang Transform

Understand

The Hilbert-Huang Transform is a novel, adaptive approach to time series analysis that does not make assumptions about the data form.

• Its adaptive, local character allows the decomposition of non-stationary signals with hightime-frequency resolution but also renders it susceptible to degradation from noise.
• We show that complementing the HHT with techniques such as zero-phase filtering, kernel density estimation and Fourier analysis allows it to be used effectively to detect and characterize signals with low signal to noise ratio.