Posture adjusting device and method for cold atom interference type gravimeter probe

Abstract

The invention discloses a posture adjusting device and method for a cold atom interference type gravimeter probe, and relates to the field of cold atom interference precision measurement. The device is characterized in that a supporting plate, three electric supporting legs or two electric supporting legs and a common supporting leg are arranged on a supporting surface; a probe is arranged on thesupporting plate, and an inclinometer is arranged on the probe or the supporting plate; the electric supporting legs, a circuit and a computer are sequentially connected; and the inclinometer and thecomputer connection. According to the method, the calibration process comprises the steps of A changing the posture of a probe point by point; B recording inclination angle data, and recording probe output; C and carrying out fitting; the adjusting process comprises the steps of a placing the probe; b reading an inclination angle; c carrying out a PID algorithm; d enabling the electric supportinglegs to stretch out and draw back; and e the inclination angle value being equal to the calibration inclination angle value. According to the invention, the posture of the gravimeter probe can be adjusted rapidly and automatically, so that the operation laser wave vector direction is parallel to the gravity direction; enough data points can be obtained; the calibration inclination angle value is accurately determined; and the system error of the gravimeter is reduced.

Description

technical field [0001] The invention relates to the field of cold atom interference precision measurement, in particular to an attitude adjustment device and method for a cold atom interference gravimeter probe. Background technique [0002] Gravity measurement has important applications in the fields of geophysics, geodesy, metrology, inertial navigation and resource exploration; and the cold atom interferometric gravimeter is a new type of high-precision absolute gravimeter. The cold atom interferometric gravimeter uses cold atomic groups as the test substance, and uses the laser phase as the ruler to record the position of the atoms, so as to measure the acceleration of gravity with high precision. The gravity test substance is a cold atomic group, not a macroscopic object, so there is no mechanical wear during the working process, and the gravity can be measured continuously for a long time, which is an advantage that the traditional high-precision absolute gravimeter (F...

AI Technical Summary

Problems solved by technology

[0009] ①In methods 1 and 2, it is necessary to manually adjust the attitude of the gravimeter probe many times. The adjustment process is time-consuming and labor-intensive, and the manual adjustment accuracy is low

[0010] ② Method 3 uses a gyro-stabilized platform to adjust the attitude of the gravimeter probe in real time, but this method has relatively large restrictions on the size and weight of the gravimeter probe, and the gyro-stabilized platform is more complicated and expensive

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