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Absolute gravimeter and gyroscope sensor based on atomic interference effect and method

An absolute gravimeter and atomic interference technology, applied in the field of inertial navigation, can solve the problems of ineffective system integration and bulky sensors, and achieve the effects of miniaturization, reduction of single measurement time, and simple structural units

Active Publication Date: 2020-02-28
TIANJIN NAVIGATION INSTR RES INST
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Problems solved by technology

[0003] The inertial navigation system focuses on rotation information, acceleration information and gravitational field information. The traditional cold-atom interference inertial measurement technology generally distinguishes the cold-atom absolute gravimeter from the cold-atom gyroscope, and uses an independent vacuum structure, electronic control system and laser system, which respectively realize the measurement of gravity acceleration information and gyro information, although the working principle and engineering technology of the two are similar, the system has not been effectively integrated, resulting in the bulky size of the sensor

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  • Absolute gravimeter and gyroscope sensor based on atomic interference effect and method
  • Absolute gravimeter and gyroscope sensor based on atomic interference effect and method
  • Absolute gravimeter and gyroscope sensor based on atomic interference effect and method

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Embodiment Construction

[0071] The present invention will be further described in detail below through the specific examples, the following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention with this.

[0072] An absolute gravimeter and gyroscope integrated sensor based on atomic interference effect, such as figure 1 As shown, it includes a vacuum unit (10) installed in the magnetic shielding unit (80), a first detection unit (41), a second detection unit (42) and an optical unit (90), wherein:

[0073] The vacuum unit (10) is a cross-shaped fully-enclosed light-transmitting container, which is a fully-enclosed container made of all-glass materials or contains glass windows, and the interior is a cross-through cavity, which includes a Y-direction cavity and an X-direction cavity. The cavity in the Y direction is consistent with the direction of gravity, and the left three-dimensional magneto-optical trap (11), the right three-dimensional ma...

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Abstract

The invention relates to an absolute gravimeter and gyroscope integrated sensor based on atomic interference effect. The absolute gravimeter and gyroscope integrated sensor comprises a vacuum unit, afirst detection unit, a second detection unit and an optical unit which are installed in a magnetic shielding unit. The invention relates to an absolute gravimeter and gyroscope integrated sensing method based on atomic interference effect. The absolute gravimeter and gyroscope integrated sensing method comprises the steps that angular velocity information and acceleration information are sensed by measuring transverse atomic interference phase difference; and absolute gravity acceleration information is sensed by measuring the phase information of atomic interference in the vertical direction. The extraction of the absolute gravity acceleration information, single-axis rotation information and the acceleration information of a single cavity can be realized, the size and dimensions of thesensor are greatly reduced, the structure is simple, and an atomic inertial measurement sensor device for an inertial navigation system can be conveniently realized.

Description

technical field [0001] The invention belongs to the field of inertial navigation, and in particular relates to an absolute gravimeter, a gyroscope sensor and a method based on atomic interference effects. Background technique [0002] Since it was verified in the early 1990s, the atomic interferometer has been proved to be an inertial sensor with ultra-high sensitivity and excellent performance, and has been widely used in basic physics experiments and scientific research. At present, the atomic interferometric absolute gravimeter has reached 10-9g measurement Accuracy, the zero bias stability of the atomic interference gyroscope can reach 7×10-5° / h, and the measurement resolution of the atomic accelerometer is 10-11g, which has very broad application prospects in inertial navigation and gravity-assisted navigation. [0003] The inertial navigation system focuses on rotation information, acceleration information and gravitational field information. The traditional cold-atom ...

Claims

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Application Information

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IPC IPC(8): G01V7/00G01V7/04G01C19/66
CPCG01V7/00G01V7/04G01C19/66
Inventor 孔德龙王杰英陈玮婷刘简裴栋梁来琦
Owner TIANJIN NAVIGATION INSTR RES INST
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