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|Author(s):||Craig W. Nelson; Archita Hati; David A. Howe;|
|Title:||A collapse of the cross-spectral function in phase noise metrology|
|Published:||February 25, 2014|
|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|
|Pages:||pp. 024705-1 - 024705-7|
|Keywords:||amplitude noise,cross-correlation,cross-spectrum,phase noise|