Main - IEEE 1139/D3 October 2007February 2008 Draft Standard Definitions of Physical Quantities for Fundamental Frequency and Time Metrology Random

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IEEE 1139/D3, October 2007 February 2008 Draft Standard Definitions of Physical Quantities for Fundamental Frequency and Time Metrology - Random Instabilities 1. Overview 1.1 Scope This standard covers the fundamental metrology for describing random instabilities of importance to frequency and time metrology. Quantities covered include frequency, amplitude, and phase instabilities; spectral densities of frequency, amplitude, and phase fluctuations; and time-domain variances deviations of frequency fluctuations. In addition, recommendations are made for the reporting of measurements of frequency and phase instabilities, especially as regards the recording of experimental parameters, experimental conditions and calculation techniques. The annexes cover b B asic concepts and definitions, time prediction, and confidence limits when estimating the variance deviations and spectral densities from a finite data set, and confidence limits for frequency domain measures are covered in the annexes . The annexes also cover translation between the frequency domain and time domain instability measures, examples on how to calculate the time-domain measures of frequency fluctuations, and an extensive bibliography of the relevant literature. Systematic instabilities, such as environmental effects and aging, are discussed in [IEEE Std 1193-2004]. 2. Summary of definitions 1
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IEEE 1139/D3, October 2007 February 2008 The standard definitions given in the main body of the text and the annexes are listed here in narrative form. If ambiguities are created between the narrative definition given here and the mathematical equation given in the text, the equation has priority. 2.1 amplitude instability
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This note was uploaded on 02/13/2011 for the course ENME 351 taught by Professor Smela during the Spring '08 term at Maryland.

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Main - IEEE 1139/D3 October 2007February 2008 Draft Standard Definitions of Physical Quantities for Fundamental Frequency and Time Metrology Random

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