Journal of Applied Science and Engineering

Published by Tamkang University Press


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C. Zhuo This email address is being protected from spambots. You need JavaScript enabled to view it.1,2,3, H. Dong1,2,3 and L. Xuan1,2,3

1School of Instrumentation Science and Opto-Electronics Engineering, Beihang University, Beijing, P.R. China
2Science and Technology on Inertial Laboratory, Beijing, P.R. China
3Fundamental Science on Novel Inertial Instrument & Navigation System Technology Laboratory, Beijing, P.R. China


Received: November 22, 2013
Accepted: May 24, 2014
Publication Date: September 1, 2014

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To avoid the broadening of Zeeman resonances of the vector atomic magnetometer working in an unshielded environment, a real-time magnetic compensation is necessary. A three dimensional mini spherical compensation system is presented, which can be used for a compact atomic magnetometer to realize an ultra-high precision field measurement. Based on the field gradient method, parameters are optimized to obtain a uniformity of 10-3 over the region of one half radius with a good tolerance on dimensional variations. A prototype has been built and the measurement by traditional fluxgate magnetometer and the integration into the atomic system both demonstrate the validity of the design.

Keywords: Spherical Compensation Coils, Field Gradient Method, Unshielded Atomic Magnetometer, Vector Field Measurement


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