Articles | Volume 7, issue 1
https://doi.org/10.5194/gi-7-1-2018
https://doi.org/10.5194/gi-7-1-2018
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

Model code and software

AltMagAbsolutes – A software package for Numerical Evaluation of Magnetic Absolute Measurements with Arbitrarily Distributed DI-Fluxgate Theodolite Orientations H.-P. Brunke https://doi.org/10.5880/GFZ.2.3.2017.003

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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.