B.D. Borisov (Russia)
Signal processing, Filter, Frequency stability, Oscillators.
The processing of the frequency stability signal of high quality oscillators in RF, SRF and optical regions is considered. In the time-domain the two main types of disturbances (the regular frequency drift and the 1/f frequency flicker-noise) are separated. Recursive computational algorithms of the estimate of the frequency drift, the trend coefficient, and its mean-square root deviations in the time domain are obtained on the basis of the linear Kalman-Bucy filtration (KBF). On the same basis, the components of a mixture of flicker – noises in the Fourier-domain are identified. The universal characteristic of the instability (density probability p(f) as the function of frequency fluctuations) and its relations with the local frequency instability measures are established.
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