Calibration and monitoring for 3-axis magnetometer arrays of arbitrary geometry
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United States of America Patent
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Nov 24, 2020
Grant Date -
Jan 4, 2018
app pub date -
Jun 30, 2017
filing date -
Jun 30, 2016
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Abstract
A system and method for calibrating rigid and non-rigid arrays of 3-axis magnetometers. Such arrays might be used to analyze structures containing ferromagnetic material. The calibration determines scale factor and bias parameters of each magnetometer in the array, and the relative orientation and position of each magnetometer in the array. Once the parameters are determined, the actual magnetic field value at the magnetometer location can be simply related to magnetometer measurements. The method and system can be used to calibrate an array of 3-axis magnetometers in aggregate as opposed to individual magnetometers. This is critical in large arrays to increasing reproducibility of the calibration procedure and decreasing time required to complete calibration procedure.
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