LIGO Document P0900041-v1

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

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P - Publications
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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.
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Published in Phys Rev D vol. 79 pg. 124022.

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