Phase adjustment method and device for cesium and hydrogen atom frequency standard

Abstract

The invention discloses a phase adjustment method for a cesium and hydrogen atom frequency standard, wherein the method does not adopt a classical mode and method in the industry to regulate and control the phase performance of an atomic clock group and does not need to adopt a plurality of expensive cesium clocks and hydrogen clocks, and can remarkably reduce the time deviation relative to UTC and enable the performance index to reach the nanosecond or subnanosecond level through the method provided by the technical scheme of the invention; and the system investment can be greatly reduced, and similar or higher performance can be obtained only by a million yuan level. The system is small in size, high in performance, suitable for rapid arrangement, capable of being applied to ships, vehicles, common machine rooms and other environments, and wider in application range.

Description

technical field [0001] The invention belongs to the fields of electronic technology and time-frequency technology, and in particular relates to a phase adjustment method and device for frequency standards of cesium and hydrogen atoms. Background technique [0002] National or important time-frequency laboratories (centers), etc., need to configure atomic clock frequency standards to generate accurate frequency (such as 10Mhz) and time signal (PPS). Generally need to adopt multiple expensive cesium clocks and hydrogen clocks (for example, the U.S. Naval Observatory uses more than 80 sets, and my country's National Time Service Center uses more than 20 sets). Although the time-frequency signal generated by the atomic clock is relatively accurate, there is also a certain phase deviation (drift), such as the commonly used 5071 cesium clock (accuracy is 1X10 -12 ) The daily phase deviation is 86ns, and measures need to be taken to regulate it to ensure high-precision signal outp...

AI Technical Summary

Problems solved by technology

[0003] The main problems of the prior art are: first, the time-frequency index is limited by the physical components of the atomic clock, and it is difficult to further improve the accuracy; second, a large number of expensive atomic clocks are required, and the investment is huge; Flexible deployment is not conducive to popularization

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