Exploring time series analysis techniques

Details Exploring time series analysis techniques Exploring time series analysis techniques

Jan 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001esasp.464..351k&link_type=abstract

In: Proceedings of the SOHO 10/GONG 2000 Workshop: Helio- and asteroseismology at the dawn of the millennium, 2-6 October 2000,

Computer Science

1

Hilbert Spectrum, Multitaper Spectrum, Time Series Analysis

Scientific paper

Multitaper power spectra show greatly reduced noise compared to single taper spectra, such as periodograms. We performed a random-restart test to show that multitaper spectra do not bias the fitted mode parameters. Then, we show a different way to increase the signal-to-noise ratio of spectra by calculating interleaved shifted cross-spectra. Finally, we start exploring the Hilbert spectral analysis which is a tool to localize events in time-frequency space.

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