Radio-frequency power relative stability testing circuit and method for quantum precision magnetic detection

Abstract

The invention provides a radio-frequency power relative stability testing circuit and method for quantum precision magnetic detection. According to the radio-frequency power relative stability testing circuit and method for quantum precision magnetic detection, the power measurement values of radio-frequency signals to be tested are collected in real time, and time-domain output power relative stability is characterized by Allan variance; and temperature and humidity signals and calibration source test data of an environment where a to-be-tested radio-frequency excitation unit is located are collected in real time, the stability of test instrument equipment and the unstable factors of environmental influence exerted on the test instrument equipment are quantified and evaluated; and the quantization values of the unstable factors are removed from characterization results obtained through the test data of the radio-frequency signals to be tested, so that a more effective test evaluation result is obtained. With the radio-frequency power relative stability testing circuit and method for quantum precision magnetic detection of the invention adopted, the test problem of the random continuity change tendency of radio frequency power in specific sampling time is solved; the effective characterization and evaluation of a radio-frequency power relative stability index which is lower than 0. 1% or even has a higher order are realized; and the practical requirements of technical application are met.

Description

technical field [0001] The present disclosure relates to the technical field of microwave testing, in particular to a radio frequency power relative stability test circuit and method for quantum precision magnetic detection, and a radio frequency signal generating device. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art. [0003] With the rapid development of a new generation of information technology and equipment applications, laser-pumped helium atom magnetometers for quantum precision magnetic detection have continuously improved the requirements for effective evaluation of the core technical index of the relative stability of the radio frequency power of the internal core radio frequency excitation unit. . The relative stability of radio frequency power is a key technical index characteristic that characterizes the signal transmission charact...

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Problems solved by technology

[0005] In order to solve the deficiencies in the prior art, the present disclosure provides a radio frequency power relative stability test circuit and method for quantum precision magnetic detection, which solves the problem that the final performance of the laser-pumped helium atom magnetometer used for quantum precision magnetic detection has strong differences. The test problem of the relative stability of the radio frequency power of the correlation, that is, the test problem of the random continuous change trend of the radio frequency power within a specific sampling time, realizes the effective measurement of the relative stability index of the radio frequency power better than 0.1% or even higher Characterization and evaluation, and meet the practical needs of technical applications

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