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Publication Citation: Phase inversion and collapse of the cross-spectral function

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Author(s): Craig W. Nelson; Archita Hati; David A. Howe;
Title: Phase inversion and collapse of the cross-spectral function
Published: December 05, 2013
Abstract: Cross-spectral analysis is a mathematical tool for extracting the power spectral density of a correlated signal from two time series in the presence of uncorrelated interfering signals. We demonstrate and explain a set of conditions where the detection of the desired signal using cross-spectral fails partially or entirely in the presence of a second uncorrelated signal. Not understanding when and how this effect occurs can lead to dramatic underreporting of the desired signal. Theoretical and simulated demonstrations of this effect are presented
Citation: Electronics Letters
Volume: 49
Issue: 25
Pages: pp. 1640 - 1641
Keywords: amplitude noise;cross-correlation;cross-spectrum;phase noise
Research Areas: Physics