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Geoscientific Instrumentation, Methods and Data Systems An interactive open-access journal of the European Geosciences Union
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GI | Articles | Volume 7, issue 1
Geosci. Instrum. Method. Data Syst., 7, 1–9, 2018
https://doi.org/10.5194/gi-7-1-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue: The Earth’s magnetic field: measurements, data, and applications...

Geosci. Instrum. Method. Data Syst., 7, 1–9, 2018
https://doi.org/10.5194/gi-7-1-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 23 Jan 2018

Research article | 23 Jan 2018

Numerical evaluation of magnetic absolute measurements with arbitrarily distributed DI-fluxgate theodolite orientations

Heinz-Peter Brunke and Jürgen Matzka

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Short summary
The long-term drift of magnetometers at geomagnetic observatories is calibrated by a non-magnetic theodolite. We propose a numerical method to evaluate such absolute measurements in a new, more general manner. It is more flexible and helps to identify and correct or discard erroneous measurements. We derive this method and give examples showing how it improves the quality and reliability of the calibrations parameters (the so-called baseline values) of an observatory magnetometer.
The long-term drift of magnetometers at geomagnetic observatories is calibrated by a...
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