DETERMINATION OF THE OVERHAUSER MAGNETOMETER UNCERTAINTYS

Michal Ulvr – Aleš Zikmund – Josef Kupec – Michal Janošek – Michal Vlk – Tomáš Bayer

   Overhauser magnetometers are the basic instruments for scalar measurements; however, their accuracy is determined at the time of manufacture only. Because of various effects affecting the gyromagnetic ratio of the used fluid or the stability of the os-cillators in the circuitry, their accuracy should be verified during the instrument lifetime. Specific methodology of data pro-cessing and determination of the Overhauser magnetometer uncertainty is described in this paper.

Keywords: Overhauser magnetometer, Earth's magnetic field, comparison, uncertainty

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