Portable vibration noise correction and compensation method and a device suitable for atomic interference gravimeter

Abstract

The invention discloses a portable vibration noise correction and compensation method and device suitable for an atomic interference gravimeter. The method comprises the following steps: step S1, vibration phase shift measurement: monitoring the phase shift of interference fringes of a Michelson type homodyne laser interferometer caused by the vibration of a reflector by a four-channel phase shiftdetector; step S2, vibration phase shift extraction: through data processing, extracting total phase shift caused by the vibration of the reflector in the action process of three beams of Raman light; step S3, vibration phase shift correction: correcting and compensating phase shift caused by the vibration of the reflector in real time in a measured Raman laser phase-atomic transition probabilitysignal, and outputting the Raman laser phase-atomic transition probability signal without vibration noise. The device is used for implementing the method. The device has the advantage that the measuring sensitivity, stability and portability can be improved.

Description

technical field [0001] The invention mainly relates to the technical field of atomic interference gravimeter, in particular to a portable vibration and noise correction compensation method and device suitable for atomic interference gravimeter. Background technique [0002] High-precision absolute gravimeters have broad application prospects in many fields such as basic scientific research, national defense construction, earth information monitoring, resource mining, and archaeology. The new-generation quantum absolute gravimeter based on the principle of atomic interference is the development direction of the next-generation high-precision absolute gravimeter. At present, its measurement performance has approached or even surpassed the most advanced FG5X commercial laser interference absolute gravimeter. In order to further improve the measurement sensitivity and precision of the atomic interferometer gravimeter, vibration noise is a major problem that must be solved. [0...

AI Technical Summary

Problems solved by technology

The above two methods require additional complex and bulky measurement equipment such as vibration isolation platforms, seismometers, and accelerometers, and it is difficult to achieve real-time processing, so it is difficult to meet the needs of many types of measurement environments such as field portable real-time measurement

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