Verification and calibration of a commercial anisotropic magnetoresistive magnetometer by multivariate non-linear regression

Abstract. Commercially available anisotropic magnetoresistive (AMR) magnetometers exhibit on the order of 1 nanotesla (nT) sensitivity in small size, weight, and power (SWaP) packages. However, AMR magnetometer accuracy is diminished by properties such as static offsets, gain uncertainty, off-axis coupling, temperature effects. This work presents a measurement magnitude these effects for Honeywell HMC1053 evaluates method calibrating observed multivariate non-linear regression using 24-parameter equation. The presented calibration has reduced vector norm root mean square error from 4300 to 72 nT data acquired this experiment. been developed use AERO (Auroral Emissions Radio Observer) VISTA (Vector Interferometry Space Technology AERO) CubeSat missions, but methods results may be applicable other resource-constrained whose accuracies are limited offset, gain, off-axis, thermal that similar magnetometer.