Nuclear magnetic resonance gyroscope with discrete working media

A nuclear magnetic resonance gyro, working medium technology, applied in steering induction equipment and other directions, can solve the problems affecting magnetic detection accuracy, strong instrument accuracy, poor production consistency, etc., to improve compensation accuracy and detect precession signal signal-to-noise ratio, avoid Phase error, the effect of improving polarization efficiency

Active Publication Date: 2020-11-17
BEIJING INST OF AEROSPACE CONTROL DEVICES
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Problems solved by technology

In the above conventional scheme, since the alkali metal atoms are used to polarize the inert gas atoms, its steady-state polarizability drops significantly, which greatly affects its magnetic detection accuracy as a magnetometer medium
At the same time, the instrument accuracy of the above scheme strongly depends on the accurate filling of the distribution ratio of three or more gas components in the atomic gas chamber. The process is difficult and the production consistency is poor. The overall scheme needs to be further improved.

Method used

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  • Nuclear magnetic resonance gyroscope with discrete working media
  • Nuclear magnetic resonance gyroscope with discrete working media
  • Nuclear magnetic resonance gyroscope with discrete working media

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Embodiment

[0070] A nuclear magnetic resonance gyroscope with a separate working medium, including an atomic gas chamber, a heating structure, a magnetic field coil, a magnetic shield, a pump light system, a detection system for detecting the polarization plane of detection light, a control unit and a signal processing unit, wherein:

[0071] The atomic gas chamber has three dimensions of 3×3×3mm 3 The square glass air chambers are side by side close to the structure, including No. 1 air chamber on the left, No. 2 air chamber in the middle, and No. 3 air chamber on the right. Quartz, high borosilicate and other alkali metal corrosion-resistant materials can be used. The three air chambers are all Ensure that the front, back, top and bottom sides are transparent. Among them, the No. 1 air chamber on the left is filled with 129 Xe, N 2 and 87 Rb atoms, the No. 3 air cell on the right is filled 131 Xe, N 2 and 87 Rb atom, N 2 Used as a buffer gas to ensure 87 The polarizability of R...

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Abstract

The invention relates to a nuclear magnetic resonance gyroscope with discrete working media, which adopts a form that three air chambers are closely connected in parallel, so that two processes of atomic polarization precession and atomic precession magnetic moment detection are independent, and high-precision precession magnetic moment detection in a specific direction is easy to achieve withoutbeing interfered by a driving magnetic field. The depolarization effect of detection linearly polarized light on atoms does not need to be considered, and the gas component filling of each atom gas chamber only needs to consider the single effect of the gas chamber, so that the gas component is easy to optimize; the types of filling gases are few, and the requirements on the atomic gas chamber filling process are reduced.

Description

technical field [0001] The invention relates to the field of nuclear magnetic resonance gyroscopes, in particular to a nuclear magnetic resonance gyroscope with independent nuclear polarization and detection process space, which has the characteristics of miniaturization, high precision and strong reliability, and can be applied to the navigation of strategic and tactical weapons and equipment Guidance and Control. Background technique [0002] Gyroscope is the core device of inertial navigation, which is mainly used to measure the rotation rate and angle of objects. Since its birth, mechanical rotor gyroscopes, optical gyroscopes, and MEMS gyroscopes have appeared successively. As a new type of gyroscope, atomic gyroscopes are expected to become the next generation of high-precision gyroscopes. According to the working principle, atomic gyroscopes can be divided into two types: the interference type based on the Sagnac effect and the spin type using atomic electron spin in...

Claims

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Application Information

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IPC IPC(8): G01C19/62
CPCG01C19/62
Inventor 黄伟刘院省段宇鹏贺宇霍丽君王学锋
Owner BEIJING INST OF AEROSPACE CONTROL DEVICES
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