Online calibration device and calibration method for atomic frequency standards

Abstract

The invention provides an online calibration device and a calibration method for atomic frequency standards. The online calibration device and the calibration method are simple, easy to apply and capable of carrying out online calibration on various atomic frequency standards. The online calibration device and the calibration method for the atomic frequency standards are achieved through the following technical scheme that three identical frequency difference doubling and phase comparator modules which are connected between power dividers and a data collecting and processing device in series are adopted to form a three-channel ultra-low noise frequency marker comparator, wherein one output end of the power divider of a channel CH1 is connected to the input end of a frequency difference doubling and phase comparator of a channel CH3 in parallel, one output end of the power divider of a channel CH2 is connected to the input end of a frequency difference doubling and phase comparator of a channel CH1 in parallel, one output end of the channel CH3 is connected to the input end of the input end of the frequency difference doubling and phase comparator of the channel CH3 in parallel, and the output of the three phase comparators is input to the data collecting and processing device to carry out data processing. The online calibration device and the calibration method for the atomic frequency standards can solve the problems that at present, commercial atomic frequency standard calibration items are incomplete, calibration is not carried out in real time, and calibration difficulty is large.

Description

technical field [0001] The invention relates to an online calibration device and calibration method for the frequency accuracy and short-term frequency stability of an atomic frequency standard in a ground measurement and control station in the field of aerospace measurement and control. Background technique [0002] In the aerospace measurement and control system, in order to measure the distance, angle and speed of the spacecraft accurately, the atomic frequency standard is basically used as the time frequency standard in the ground measurement and control station. According to the difference of measurement and control precision, the high-performance atomic frequency standard represented by the active hydrogen atomic frequency standard and the low-performance atomic frequency standard represented by the rubidium atomic frequency standard are the most. In the measurement and control system, the most concerned is the frequency accuracy and short-term frequency stability of t...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a calibration device that is easy to operate, easy to implement, and capable of online calibration of various current commercial atomic frequency standards in view of the problems of incomplete calibration items, unreal-time calibration, and high calibration difficulty in the above-mentioned prior art. and calibration method

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