Virtual atomic clock system for monitoring entity atomic clock and working method

Abstract

The invention provides a virtualized atomic clock system, and belongs to the technical field of atomic clocks. Multiple entity atomic clocks obtain relative deviation information relative to a reference TA through a comparison and measurement unit to form an original data set; the original data is analyzed to remove abnormal behaviors, such as random hopping of the phase, the frequency or frequency drifting, of the atomic clocks to form an atomic clock sample data set; historical behaviors of the atomic clocks are learned through an atomic clock prediction and analysis unit by means of an algorithm, deviations of the entity atomic clocks relative to the reference in a preset time are extrapolated to obtain clock deviation data (TA-T1); and the deviations between the entity atomic clocks and the TA at the same moment are acquired, data conversion is conducted, an intermediate reference is eliminated, and relative deviations (T0-T1) between a virtual atomic clock and the entity atomic clocks are obtained. The performance of the virtual atomic clock is close to being measured and is taken as the reference to evaluate the performance of the entity atomic clocks and monitor the abnormalbehaviors of the entity atomic clocks.

Description

Technical field [0001] The invention belongs to the technical field of atomic clocks, and in particular relates to a virtual atomic clock system and working method for monitoring physical atomic clocks. Background technique [0002] In 1967, the Thirteenth International Conference on Weights and Measures passed a resolution defining the basic time unit "second" as the time lasting 9,192,631,770 times the electromagnetic radiation period of the transition between the two hyperfine energy levels of the cesium 133Cs atom ground state. Entering the atomic age, time has become the physical quantity with the highest measurement accuracy in nature. As a timing tool, atomic clocks make the operation of contemporary information society efficient and orderly. Precision time and frequency benchmarks have become indispensable in various fields of the national economy. It is widely used in astronomical observation, geodesy, traffic management, power grid connection and troubleshooting. ...

AI Technical Summary

Problems solved by technology

Studies have shown that the atomic clocks in the same laboratory are affected by environmental factors, and the noise has a strong correlation, which makes the time scale TA of the clock group unable to be used as a reference to accurately evaluate the performance of the atomic clock

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