Signal conditioning and quality estimation method of Overhauser magnetometer

Lidong Zheng; Haobin Dong; Wang Luo; Jian Ge; Huan Liu

doi:10.1117/12.2619326

29 November 2021 Signal conditioning and quality estimation method of Overhauser magnetometer

Lidong Zheng, Haobin Dong, Wang Luo, Jian Ge, Huan Liu

Proceedings Volume 12080, 4th International Symposium on Power Electronics and Control Engineering (ISPECE 2021); 120800H (2021) https://doi.org/10.1117/12.2619326
Event: 4th International Symposium on Power Electronics and Control Engineering (ISPECE 2021), 2021, Nanchang, China

Abstract

Overhauser magnetometer reaches an ultra-high accuracy benefit from the outputted frequency of free induction decay transversal signal is proportional to the magnetization on measuring the real scalar geomagnetic field. Nevertheless, the magnitude of the accuracy is an important factor that severely affects the validity of geomagnetic field data. Since the real value of the geomagnetic field is unknown, we propose a measurement quality estimation method through analyzing the envelope of the free induction decay transversal signal from the Overhauser magnetometer. The estimation model includes the SNR and the decay slope characteristics of the signal is indicated in an two-digit number changes from 00~99. The results demonstrated that the proposed estimation method can effective performance the reliability of magnetometer measurement data in our experiments.

Citation Download Citation

Lidong Zheng, Haobin Dong, Wang Luo, Jian Ge, and Huan Liu "Signal conditioning and quality estimation method of Overhauser magnetometer", Proc. SPIE 12080, 4th International Symposium on Power Electronics and Control Engineering (ISPECE 2021), 120800H (29 November 2021); https://doi.org/10.1117/12.2619326

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