Title :
A new multi-variance method for the oscillator noise analysis
Author :
Vernotte, F. ; Lantz, E. ; Groslambert, J. ; Gagnepain, J.J.
Author_Institution :
Obs. de Besancon, France
Abstract :
Since the noise altering the output signal of oscillators may be modeled as power laws in the spectral density of frequency deviation, the oscillator noise analysis is the measurement of the level of each power law noise. The principle of this new multivariance method consists in obtaining the noise type contributions with different variances and different integration time values. The data obtained from the different variances with the different integration times are then operated simultaneously. The most probable measurement, in the sense of the least squares is obtained for each type of noise. This method lends itself to estimation of uncertainty of the noise type contribution measurement, taking into account the dispersion of the variance results
Keywords :
frequency stability; interference (signal); least squares approximations; measurement errors; oscillators; random noise; spectral analysis; transfer functions; Allan variance; estimation of uncertainty; least squares; multi-variance method; noise type contributions; oscillator noise analysis; power law noise; Frequency measurement; Noise figure; Noise level; Noise measurement; Oscillators; Signal analysis; Temperature; Time measurement; Transfer functions; Working environment noise;
Conference_Titel :
Frequency Control Symposium, 1992. 46th., Proceedings of the 1992 IEEE
Conference_Location :
Hershey, PA
Print_ISBN :
0-7803-0476-4
DOI :
10.1109/FREQ.1992.270002
