Nelson, C.
, Hati, A.
and Howe, D.
(2014),
A collapse of the cross-spectral function in phase noise metrology, Review of Scientific Instruments
(Accessed March 13, 2025)
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A collapse of the cross-spectral function in phase noise metrology
Published
Author(s)
, ,
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 under-reporting of the desired signal. Theoretical, simulated and experimental demonstrations of this effect as well as mitigating methods are presented.Citation
Review of Scientific Instruments
Volume
85
Pub Type
Journals
Keywords
amplitude noise, cross-correlation, cross-spectrum, phase noise
Citation
Issues
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Created February 25, 2014, Updated February 19, 2017