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Geoscientific Instrumentation, Methods and Data Systems An interactive open-access journal of the European Geosciences Union

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https://doi.org/10.5194/gi-2017-21
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Research article
27 Mar 2017
Review status
This discussion paper is under review for the journal Geoscientific Instrumentation, Methods and Data Systems (GI).
In-situ vectorial calibration of magnetic observatory
Alexandre Gonsette, Jean Rasson, and François Humbled Centre de Physique du Globe, Royal Meteorological, Dourbes, 5670, Belgium
Abstract. The goal of magnetic observatories is to measure and provide vector magnetic field in a geodetic coordinate system. For that purpose, instrument setup and calibration are crucial. In particular, scale factor and orientation of vector magnetometer may affect the magnetic field measurement. We remember here the concept of baseline and demonstrate that they are primordial for data quality control. We show how they can highlight a possible calibration error. We also provide a calibration method based on high frequency absolute measurement. This method determines a transformation matrix for correcting variometer data suffering from scale factor and orientation errors. We finally present a practical case whose recovered data have been successfully compared to those coming from a reference magnetometer.

Citation: Gonsette, A., Rasson, J., and Humbled, F.: In-situ vectorial calibration of magnetic observatory, Geosci. Instrum. Method. Data Syst. Discuss., https://doi.org/10.5194/gi-2017-21, in review, 2017.
Alexandre Gonsette et al.
Alexandre Gonsette et al.
Alexandre Gonsette et al.

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Short summary
We present a novel method for calibrating magnetic observatories. We show how magnetometer baselines can highlight a possible calibration error. We also provide a method based on high frequency automatic absolute measurement. This method determines a transformation matrix for correcting raw data suffering from scale factor and orientation errors. We finally present a practical case whose recovered data have been successfully compared to those coming from a reference magnetometer.
We present a novel method for calibrating magnetic observatories. We show how magnetometer...
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