A synchronous measurement device for atomic inertia and magnetic field based on k-rb-ne
A technology of synchronous measurement and k-rb-ne, which is applied to navigation and ground navigation through speed/acceleration measurement, and can solve problems such as unreported devices
Active Publication Date: 2017-01-04
BEIHANG UNIV
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[0003] The inertial measurement device and the magnetic field measurement device based on the atomic spin effect have ultra-high expected sensitivity. Many research institutions at home and abroad have carried out related experimental research work, but there is no report on the device that measures the two at the same time.
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[0037] The present invention will be further described below in conjunction with the drawings and specific embodiments.
[0038] The invention consists of a measurement sensitive unit subsystem, a driving laser subsystem, a detection optical path subsystem, an atomic precession detection model, and a K-Rb-Ne atomic spin dynamics model. Such as figure 1 As shown, 1 is the measurement sensitive unit subsystem, 2 is the driving laser subsystem, and 3 is the detection optical path subsystem. The measurement sensitive unit subsystem is composed of a gas chamber 11, an oven 12, and an active compensation magnetic coil 13. The driving laser subsystem is composed of a driving laser 21, a beam expander 22, a polarizer 23, and a quarter wave plate 24. The detection optical path subsystem is composed of a detection laser 31, a beam expander 32, a polarizer 33, a quarter wave plate 34, a detection light 35, a polarization maintaining beam splitter 36, a filter 37, and a photodetector 38. ...
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The invention discloses a synchronous atom inertia and magnetic field measurement device based on K-Rb-Ne. The synchronous atom inertia and magnetic field measurement device comprises a measurement sensitive unit subsystem, a driving laser subsystem and a detection light path subsystem, wherein the measurement sensitive unit subsystem is used for supplying a physical carrier and an external environment with a certain temperature and a compensation magnetic field to inertia / magnetic field measurement; the driving laser subsystem is used for polarizing a sensitive medium in a gas chamber along the z axis; the detection light path subsystem is used for measuring light rotation angles of detection light after K and Rb atoms are stably polarized; the sizes of projections of K atom polarizability and Rb atom polarizability on the x axis can be respectively calculated through an atomic spin precession model according to the two light rotation angles; a magnetic field and an angular speed can be calculated according to the projections. The device disclosed by the invention has the characteristics of high integration degree and high instantaneity and can be applied to high-precision measurement and navigation of the inertia / magnetic field.
Description
Technical field [0001] The invention relates to the technical field of magnetic field measurement, in particular to a K-Rb-Ne-based atomic inertia and magnetic field synchronous measurement device, which can be used to study a novel navigation system based on the combination of inertia and magnetic field. Background technique [0002] High-precision navigation and extremely weak magnetic field measurement technology are two important technologies in the construction of the national economy. At present, the difficulty of improving the accuracy of the gyroscope has become the key to restricting the performance of the navigation system. The existing high-precision gyroscopes mainly include a rotor gyroscope and an optical gyroscope, but they have encountered a technical bottleneck for further improvement in accuracy. With the development of quantum control technology, inertial measurement devices based on atomic spin effects have become possible and verified in principle. They have...
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IPC IPC(8): G01C21/08G01C21/16
CPCG01C21/08G01C21/16
Inventor 全伟李洋房建成袁珩万双爱李茹杰郑慧婕
Owner BEIHANG UNIV