Articles | Volume 6, issue 2
https://doi.org/10.5194/gi-6-439-2017
https://doi.org/10.5194/gi-6-439-2017
Research article
 | 
26 Oct 2017
Research article |  | 26 Oct 2017

Fog-based automatic true north detection for absolute magnetic declination measurement

Alexandre Gonsette, Jean Rasson, Stephan Bracke, Antoine Poncelet, Olivier Hendrickx, and François Humbled

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Cited articles

Abbas, A.: Design and implementation of FOG based gyrocompass, Appl. Mech. Mater., 332, 124–129, 2013.
Arditty, H. J. and Lefèvre, H. C.: Sagnac effect in fiber gyroscopes, Opt. Lett., 6, 401–403, 1981.
Auster, H.-U., Mandea, M., Geese [Hemshorn], A., Korte, M., and Pulz, E.: Automation of absolute measurement of the geomagnetic field, Earth Planet. Space, 59, 1007–1014, https://doi.org/10.1186/BF03352041, 2007.
Eckstaller, A., Müller, C., Ceranna, L., and Hartmann, G.: The geophysics observatory at Neumayer stations (GvN and NM-II) Antarctica, Polarforschung, 76, 3–24, 2007.
Gilbert, D. and Rasson, J. L.: Effect on DIFlux measuring accuracy due to a magnet located on it, in: Proceeding of the VIIth IAGA workshop on geomagnetic observatory instrument, data acquisition and processing, 8–15 September 1996, Niemegk, Germany, 1998.
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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 and of the vertical and true north. A design of a north seeker is proposed that takes 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.