Atomic interference gravimeter vibration noise and wavefront distortion error double compensation method and device

A vibration noise, atomic interference technology, applied in measuring devices, measuring ultrasonic/sonic/infrasonic waves, instruments, etc., to achieve the effect of simple principle, no need for modification, and accurate acquisition

Active Publication Date: 2021-08-06
NAT INNOVATION INST OF DEFENSE TECH PLA ACAD OF MILITARY SCI
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Problems solved by technology

[0005] According to the survey, there is no technology or method that can effectively compensate the Raman optical wavefront distortion and mirror vibration noise at the same time.

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  • Atomic interference gravimeter vibration noise and wavefront distortion error double compensation method and device
  • Atomic interference gravimeter vibration noise and wavefront distortion error double compensation method and device
  • Atomic interference gravimeter vibration noise and wavefront distortion error double compensation method and device

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Embodiment Construction

[0052] The invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0053] like figure 1 , figure 2 and image 3 As shown, an atomic interference gravity vibration noise and a prefained distortion error dual compensation method are included in the present invention, and the steps include:

[0054] Step S1: Static laser wavefront distortion measurement: a specific atomic interference gravity gauge system, measure the laser wavefront distortion distribution in Raman optical path in static

[0055] Step S2: Dynamic Vibration Noise and Laser Wave Degradation Measurement: Raman light mirror vibration signals S (x, y, z, t) is measured by the inertial instrument, and the dynamic Raman is measured in real time using the wavefront detector. Laser wavefront distortion

[0056] Step S3: Vibration Noise and Laser Wave Dismiary Compensation: Using Optimized Adaptive PID Feedback Control Algorithm and High Voltage Amplifier Dr...

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Abstract

The invention discloses an atomic interference gravimeter vibration noise and wavefront distortion error double compensation method and device, and the method comprises the steps: S1, static laser wavefront distortion measurement: carrying out the static laser wavefront distortion measurement of an atomic interference gravimeter system, S2, dynamic vibration noise and laser wavefront distortion measurement: measuring a vibration signal S (x, y, z, t) of a Raman light reflector, carrying out filtering processing, and measuring the wavefront distortion distribution of a pair of Raman light acting with atoms in a static state; and S3, vibration noise and laser wavefront distortion real-time compensation: driving the deformable mirror to deform by using an adaptive PID feedback control algorithm, and compensating the vibration noise and the laser wavefront distortion in real time. The device is used for implementing the method. The method has the advantages of being capable of improving measurement sensitivity, precision, stability, portability and the like.

Description

Technical field [0001] The present invention mainly relates to the field of high-precision absolute gravity measurement, and it is specifically referred to as an atomic interference gravity value vibration noise and pre-malignant error dual compensation method and apparatus. Background technique [0002] High-precision absolute gravity information has extensive application prospects in basic scientific research, national defense construction, earth information monitoring, industrial applications, resource mining and archeology. The cold atom interferometer is a new generation of high-precision measuring instruments that replaces light waves in an atomic wave as a measuring medium, and the measurement performance of quantum absolute gravity gauges with cold atomic interference is beyond the most advanced FG5x commercial laser interference absolute gravity gauge. It is the direction of the next generation of high precision absolute gravity gauges. In order to further enhance the me...

Claims

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Application Information

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IPC IPC(8): G01V7/00G01H9/00
CPCG01V7/00G01H9/00
Inventor 胡青青邝文俊万伏彬罗玉昆丛楠舒畅徐馥芳汪杰易腾
Owner NAT INNOVATION INST OF DEFENSE TECH PLA ACAD OF MILITARY SCI
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