Three-axis integrated SERF atomic spin gyroscope

An atomic spin and gyroscope technology, which is applied to steering induction equipment and other directions, can solve the problems of limiting the application of SERF atomic spin gyroscope, the system is large, and the structure is complex, and achieves the effect of simple structure, large volume and small volume.

Active Publication Date: 2019-01-11
BEIHANG UNIV
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Problems solved by technology

[0003] At present, a SERF atomic spin gyroscope can only be sensitive to inertial rotation information in two directions. If it is applied to inertial navigation, at least two traditional SERF atomic spin gyroscopes are required, which makes the system large in size, complex in structure, high in cost, and limited Application of SERF atomic spin gyroscope

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] Such as figure 1 Shown: optical pumping system 1, detection system 2, magnetic shielding system 3, magnetic compensation system 4, non-magnetic electric heating system 5, alkali metal gas chamber 6. Two alkali metal air chambers are placed in the oven, the oven is located in the magnetic shielding coil, and the outer layer is the magnetic shielding cylinder; the pumping system and the detection system are located outside the shielding cylinder. The pumping laser light passing through each gas chamber is perpendicular to the detection laser light, and is irradiated to the center of the alkali metal gas chamber through the small hole opened on the shielding cylinder.

[0024] The alkali metal air chamber is the sensitive core part of the gyroscope, it is generally made of light-transmitting material, and is a closed air chamber with an in...

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Abstract

The invention discloses a three-axis integrated SERF (Spin-Exchange-Relaxation-Free) atomic spin gyroscope, comprising an alkali metal air chamber, a no-magneto-electricity heating system, a magneticshielding system, a magnetic compensation system, a pumping system and a detection system. The alkali metal air chamber is the sensitive core of a gyroscope, the no-magneto-electricity heating systemcan increase the atom density, the magnetic shielding system can provide an exceedingly low-intensity magnetic field environment, the magnetic compensation system accurately compensate residual field,the pumping system realizes the spin polarization of electrons in the outer layer of the alkali metal and the spin hyperpolarization of inert gas nucleons, and the detection system is used for detecting a rotating signal. According to the invention, by placing two alkali metal air chambers in a same magnetic shielding cylinder, and providing mated pumping and detection systems, three-axis rotarymeasurement can be realized by using one gyroscope, and thus being favorable for improving the precision of the gyroscope, reducing the volume of a navigation system, and widening the application scope of the SERF atomic spin gyroscope.

Description

technical field [0001] The invention relates to the technical field of atomic gyroscopes, in particular to a three-axis integrated SERF (Spin-Exchange-Relaxation-Free) atomic spin gyroscope, which can accurately measure the three-axis rotation information of a carrier, and can be applied to long-distance voyages high precision inertial navigation system. Background technique [0002] Atomic gyroscopes are an important development direction of a new generation of high-precision gyroscopes. Among them, SERF atomic spin gyroscopes have ultra-high inertial measurement sensitivity, and their theoretical zero-bias stability indicators can be as high as 10 -8 ° / h is the first choice for long-endurance and high-precision inertial navigation systems in the future; the development of SERF atomic spin gyroscopes is of great significance to national defense security and economic development. [0003] At present, a SERF atomic spin gyroscope can only be sensitive to inertial rotation in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C19/58
CPCG01C19/58
Inventor 全伟刘峰刘刚范文峰姜丽伟段利红
Owner BEIHANG UNIV
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