Atomic gyroscope axial azimuth angle measuring device and method based on double theodolites

Abstract

The invention relates to an atomic gyroscope axial azimuth angle measuring device and method based on double theodolites. The atomic gyroscope axial azimuth angle measuring device comprises a reflecting mirror and a clinometer on an atomic gyroscope, a first theodolite on the normal of the reflecting mirror and a second theodolite on the normal of an optical flat, detecting a horizontal angle value alpha of the reflecting mirror, the first theodolite and the second theodolite and a horizontal angle value beta of the optical crystal, the second theodolite and the first theodolite, and calculating a horizontal included angle phi between the axial direction of the atomic gyroscope and the normal direction of the optical crystal according to the alpha and the beta; rotating the atomic gyroscope, correcting the inclination angle of the atomic gyroscope, and adjusting the first theodolite; detecting a horizontal angle value alpha'of the reflecting mirror, the first theodolite and the second theodolite and a horizontal angle value beta 'of the optical crystal, the second theodolite and the first theodolite after rotation, and calculating a horizontal included angle phi' between the axial direction of the atomic gyroscope and the normal direction of the optical crystal after rotation according to alpha 'and beta'; according to the method disclosed by the invention, the inclination angle rotation error of the rotary table is avoided, and the measurement precision is high.

Description

technical field [0001] The invention relates to the field of quantum precision measurement, in particular to an atomic gyroscope axial azimuth measurement device and method based on a double theodolite. Background technique [0002] In the field of precision measurement of rotation, the rapid development of atomic interference technology provides a basis for the research of atomic interference gyroscopes. Among them, the four-pulse atomic gyro scheme is another differential scheme based on three-pulse interference, which uses four Raman pulse sequences of π / 2~π~π~π / 2 to interfere with atoms, and the four pulse widths They are τ, 2τ, 2τ and τ in turn, and the time intervals between pulses are T, 2T and T. Compared with the three-pulse form, this method increases the interference area and improves the measurement sensitivity. When using the four-pulse atomic gyroscope to measure the earth's rotation rate or to calibrate the scale factor of the atomic gyroscope, it is necessa...

AI Technical Summary

Problems solved by technology

Due to the large size and heavy weight of the atomic gyroscope, it needs to be driven by the azimuth turntable when turning, but the azimuth turntable has an inclination rotation error, which affects the measurement of the axial azimuth angle of the atomic gyroscope, resulting in inaccurate ground speed measurement or atomic gyroscope scale factor measurement.

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