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The measurement of a weak alternating magnetic field in unshielded space
https://doi.org/10.32446/0132-4713.2021-1-46-59
Abstract
In connection with attempts to use various types of sensors for measuring weak magnetic fields in geophysics, magnetobiology, and medicine in an unshielded space, the problem of comparing the results of these measurements arose. The issues of measuring a weak alternating magnetic field by various magnetic induction sensors in an unshielded space in the absence of obvious geomagnetic variations are considered. It is shown that the amplitude of natural geomagnetic noise in a quiet geomagnetic field in the absence of geomagnetic variations has a random character; therefore, gradient methods for measuring a weak alternating magnetic field are limited from below by the level of natural geomagnetic noise. The influence of the size of sensors of a weak alternating magnetic field on the results of measurements of broadband random geomagnetic noise is noted.
About the Author
O. L. Sokol-Kutylovskii
Institute of Geophysics, Ural Branch of the Russian Academy of Sciences
Russian Federation
Russian Federation
Oleg L. Sokol-Kutylovskii
Yekaterinburg
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Review
For citations:
Sokol-Kutylovskii O.L. The measurement of a weak alternating magnetic field in unshielded space. Metrologiya. 2021;(1):46-59. (In Russ.) https://doi.org/10.32446/0132-4713.2021-1-46-59
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