Time stability characterization and spectral aliasing Part I: a time-domain approach

Author: Vernotte F.   Zalamansky G.   Lantz E.  

Publisher: IOP Publishing

ISSN: 0026-1394

Source: Metrologia, Vol.35, Iss.5, 1998-10, pp. : 723-730

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Abstract

The noise levels given by spectral analysis are relevant parameters for the characterization of the time-domain stability of oscillators. The estimation of the noise levels of a sampled signal may be achieved with variances even if the sampling frequency is far lower than the high cut-off frequency. The effects of spectral aliasing for the white-phase noise are shown and a procedure for estimating both white-phase noise level and high cut-off frequency is given in this paper.