The Allan variance is the key measure for stability analysis, a fundamental tool to establish
the performances of atomic clocks, which are often critical elements in many applications …

Global trends of increasing threats to information and cybersecurity, increasing the level of
vulnerability of information and communication systems (ICSs) necessitate the development …

Oscillators and atomic clocks, as well as lasers and masers, are affected by physical
mechanisms causing amplitude fluctuations, phase noise, and frequency instabilities. e …

An improved chi-squared test method used to detect frequency abnormity of atomic clock is
presented. This method is independent of choice of reference value, which is applicable to …

Statistical tools for time varying quantities Page 1 Proceedings of the International School of
Physics “Enrico Fermi” Course 196 “Metrology: from physics fundamentals to quality of life” …

The predictability of atomic clock is generally used to characterize its overall performance.
Anomalous clock behaviors lead to greater prediction error in traditional prediction method …