Journal cover Journal topic
Geoscientific Instrumentation, Methods and Data Systems An interactive open-access journal of the European Geosciences Union
doi:10.5194/gi-2017-18
© Author(s) 2017. This work is distributed
under the Creative Commons Attribution 3.0 License.
Research article
24 Apr 2017
Review status
This discussion paper is under review for the journal Geoscientific Instrumentation, Methods and Data Systems (GI).
Automatic True North detection during absolute magnetic declination measurement
Alexandre Gonsette, Jean Rasson, Stephan Bracke, Antoine Poncelet, Olivier Hendrickx, and François Humbled Dourbes magnetic observatory, Royal Meteorological Institute of Belgium, Dourbes, 5670, Belgium
Abstract. Absolute magnetic measurements are of great importance in magnetic observatories. They allow not only instrument calibration but also data quality checking. They require the Vertical and the geographic North as reference directions, usually determined by means of a level and by pointing an azimuth mark respectively. We present here a novel system able to measure the direction of the magnetic field, of the Vertical and True-North. A design of a North-seeker is proposed taking into account sensor bias as well as misalignment errors. Different methods are derived from this model and measurement results are presented. A measurement test at high latitude is also shown.

Citation: Gonsette, A., Rasson, J., Bracke, S., Poncelet, A., Hendrickx, O., and Humbled, F.: Automatic True North detection during absolute magnetic declination measurement, Geosci. Instrum. Method. Data Syst. Discuss., doi:10.5194/gi-2017-18, in review, 2017.
Alexandre Gonsette et al.
Alexandre Gonsette et al.
Alexandre Gonsette et al.

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Short summary
Absolute magnetic measurements require the Vertical and the geographic North as reference directions. We present here a novel system able to measure the direction of the magnetic field, of the Vertical and True-North. A design of a North-seeker is proposed taking into account sensor bias as well as misalignment errors. Different methods are derived from this model and measurement results are presented. A measurement test at high latitude is also shown.
Absolute magnetic measurements require the Vertical and the geographic North as reference...
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