Efficient Estimation of Generator Instability Characteristics in the Time Domain
B. D. Borisov
Keywords: efficient estimation, frequency instability characteristic, Allan variance, flicker noise, variance minimum, optimal filtering
Pages: 123-126
Abstract
This paper considers the problem of determining the true (nonsampling) variance of the Allan parameter-the main frequency instability characteristic of frequency generators, synthesizer, and standards in the time domain. The variables influencing the efficiency of estimating the parameter are determined and compared in magnitude. For frequency fluctuations with flicker noise power-law power spectral density, the parameter estimate accuracy is most significantly affected by the variance of the estimated average frequency-the quantity included in the Allan parameter and defining the quality of averaging over a finite time interval.
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