空间探测原子磁强计的主动磁补偿实验

doi:10.7527/S1000-6893.2013.0521

Abstract

Abstract:

The spin-exchange-relaxation-free (SERF) atomic magnetometer with ultrahigh sensitive becomes the most effective measurement to analyze the component of the planet in space exploration. In order to improve the sensitivity of the SERF atomic magnetometer, we must avoid the influence on the SERF regime disturbed by environment magnetic field. In this paper we design an active compensation system based on in-situ magnetic measurement to compensate the magnetic disturbance. Firstly, we get the three-axis magnetic field information according to the measurement of pop-laser, then control the current of coil to generate a magnetic field which is opposite and equal to the disturbance, to keep the SERF regime. Finally, we validat the method with the atomic magnetometer experimental setup. The result shows that compared with the manual compensation method, the system can track the magnetic compensation point in real time, reduce the signal noise and compensate the magnetic disturbance successfully, validating the efficiency of the active compensation system and establishing the technique foundation of the production.

Key words: magnetometer, atomic, active magnetic compensation, material composition analysis, spin-exchange-relaxation-free, space exploration

CLC Number:

CHU Zhongyi, SUN Xiaoguang, WAN Shuang'ai, FANG Jiancheng. Experiment on Active Magnetic Compensation of Atomic Magnetometer for Space Exploration[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2014, 35(9): 2522-2529.

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Experiment on Active Magnetic Compensation of Atomic Magnetometer for Space Exploration

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