A rapid test and evaluation system and method for the physical part of a passive atomic clock

Abstract

The invention discloses a fast test and evaluation system and method for the physical part of a passive atomic clock. The system includes a signal source, a reference source, a physical part of a passive atomic clock, a spectrum analyzer, and a lock-in amplifier; the passive atomic clock includes a passive Hydrogen clocks, rubidium clocks, and cesium clocks; the system and method of the present invention can not only conveniently study the physical part of the passive hydrogen clock spectrum signal observation, cavity frequency error curve research, rubidium clock, cesium clock absorption curve, "S" frequency discrimination The measurement and evaluation of the curve can also realize the closed-loop locking of the loop, dynamic real-time adjustment and optimization of the receiver (passive hydrogen clock), synchronous detection phase difference, loop gain and other multivariable parameters, and quickly verify and evaluate the stability of the passive atomic clock It is difficult for existing methods to realize real-time verification of various parameters.

Description

technical field [0001] The invention belongs to the technical field of atomic frequency standards, and develops a general passive atomic frequency standard physical part rapid test and evaluation device and method. Background technique [0002] Passive atomic clocks use the transition spectrum of a pair of energy levels of atoms (or molecules) to discriminate the excitation signal, and then lock the frequency of the excitation signal (such as a voltage-controlled crystal oscillator) to the transition center through a frequency-locked loop. frequency. [0003] As a high-precision time-frequency reference, the passive atomic frequency standard has the characteristics of small size and light weight compared with the self-excited atomic frequency standard. It is widely used in military scientific research fields such as navigation and positioning, deep hole detection, and communication technology. The atomic clocks carried by GPS in the United States, BD in China, GLONASS in Ru...

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Problems solved by technology

[0009] It can be seen that the above-mentioned patents are usually based on the specific technical difficulties of passive hydrogen clocks. At present, the research on single-frequency methods is not perfect and systematic, and the research methods are still very limited and complicated. The need for the rapid development of hydrogen clocks seriously affects the further development of passive hydrogen clock technology

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