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A Procedure for Calibrating Magnetic Sensors
ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD WEAPONS AND MATERIALS RESEARCH DIRECTORATE
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The calibration of magnetometers is of interest to the U.S. Army Research Laboratory because these sensors are being investigated as components of navigation and instrumentation packages. Calibration is the process of estimating the coefficients of an analytical model of sensor output. In many cases, it is possible to represent the output of a sensor analytically. This representation embodies our knowledge of the sensor. For this process to proceed, an adequate model of the sensor and an evaluation procedure need to be implemented. These data sets indicate different scale factors for the same magnetometer. The fits for the peak-to-peak and average values do not agree. This should be investigated when time and money permit. The establishment of analytical formulae for measurement is central to the calibration process. These formulae, coupled with a least squares estimation, provide the framework for calibration other methods should explain their omission of least squares.
APPROVED FOR PUBLIC RELEASE