Method and device for adjusting CPT atomic frequency standard

Abstract

The invention provides a method and device for adjusting a CPT atomic frequency standard, and the method comprises the steps: receiving the first timing information of a satellite; taking the first timing information as the basis for adjusting the output frequency of a CPT atomic clock; continuously adjusting the time phase difference (frequency difference) between the second timing information corresponding to the output frequency of the CPT atomic clock and the first timing information of the satellite till the time phase difference (frequency difference) meets a preset condition; and enabling the frequency standard outputted by the CPT atomic clock to be close to the frequency corresponding to the first timing information of the satellite. According to the invention, the CPT atomic clock can employ the timing information of the satellite to optimize the output frequency. Moreover, can the CPT atomic clock optimize and adjust the output frequency only if the CPT atomic clock can receive the timing information of the satellite, so the method can maintain the stability of the outputted frequency standard of the CPT atomic clock for a long time.

Description

technical field [0001] The present application relates to the field of atomic frequency standards, in particular to a method and device for adjusting CPT atomic frequency standards. Background technique [0002] Atomic clocks use atomic resonance frequency standards to calculate and keep accurate time. It is the most accurate time measurement and frequency standard known, and is also the benchmark for international time and frequency conversion. It has broad application prospects in communication, measurement, navigation and other fields. . [0003] Among them, the atomic clock realized by the coherent population trapping (CoherentPopulationTrapping) CPT principle saves the resonant cavity compared with the traditional atomic clock, so it has the advantages of small size, low power consumption, and fast start-up, making the CPT atomic clock more convenient and easier to apply in Various fields that require precise timing or precise frequency standards. [0004] The existin...

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Problems solved by technology

[0005] The embodiment of the present application provides a method and device for adjusting the CPT atomic frequency standard to solve the problems of low frequency accuracy of the CPT atomic frequency standard and low long-term frequency stability of the CPT atomic frequency standard in the prior art

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