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A multi-variance analysis in the time domainRecently a new technique for characterizing the noise processes affecting oscillators was introduced. This technique minimizes the difference between the estimates of several different variances and their values as predicted by the standard power law model of noise. The method outlined makes two significant advancements: it uses exclusively time domain variances so that deterministic parameters such as linear frequency drift may be estimated, and it correctly fits the estimates using the chi-square distribution. These changes permit a more accurate fitting at long time intervals where there is the least information. This technique was applied to both simulated and real data with excellent results.
Document ID
19940006527
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Walter, Todd
(Stanford Univ. CA, United States)
Date Acquired
August 16, 2013
Publication Date
June 1, 1993
Publication Information
Publication: NASA. Goddard Space Flight Center, The 24th Annual Precise Time and Time Interval (PTTI) Applications and Planning Meeting
Subject Category
Electronics And Electrical Engineering
Accession Number
94N10999
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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