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On-Line Estimation of LO Noise and Optimisation of Servo Parameters in Atomic Clocks

, , , , , , and . (2017)cite arxiv:1701.06697Comment: 15 pages, 6 figures.

Abstract

For atomic frequency standards in which fluctuations of the local oscillator frequency are the dominant noise source, we examine the role of the the servo algorithm that predicts and corrects these frequency fluctuations. We derive the optimal linear prediction algorithm, as well as practical procedures for optimising the parameters of a conventional integrating servo and characterising the flicker and random-walk noise of the local oscillator without interrupting the normal operation of the standard. In particular, we show that near-optimal servo parameters can be calculated without independent knowledge of the local-oscillator noise, based …(more)

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