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Magnetometer
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==Calibration of magnetometers== The calibration of magnetometers is usually performed by means of coils which are supplied by an electrical current to create a magnetic field. It allows to characterize the sensitivity of the magnetometer (in terms of V/T). In many applications the homogeneity of the calibration coil is an important feature. For this reason, coils like [[Helmholtz coil]]s are commonly used either in a single axis or a three axis configuration. For demanding applications a high homogeneity magnetic field is mandatory, in such cases magnetic field calibration can be performed using a [[Maxwell coil]], cosine coils,<ref>{{cite journal|last=Coillot|first=C.|author2=Nativel, E. |author3=Zanca, M. |author4=Goze-Bac, C. |title=The magnetic field homogeneity of coils by means of the space harmonics suppression of the current density distribution|journal= Journal of Sensors and Sensor Systems|date=2016|volume=5|issue=2|pages=401β408|doi=10.5194/jsss-5-401-2016|bibcode=2016JSSS....5..401C|url=https://hal.archives-ouvertes.fr/hal-01402771/file/jsss-5-401-2016.pdf|doi-access=free}}</ref> or calibration in the highly homogenous [[Earth's magnetic field]].
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