Experimental design for the calibration of tri-axial Magnetometers
- Publication Type:
- Conference Proceeding
- Proceedings of the International Conference on Sensing Technology, ICST, 2016, 2016-March pp. 711 - 715
- Issue Date:
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© 2015 IEEE. The calibration and its associated experimental design scheme for the tri-axial magnetometers are explored in this paper. For the widely used 9-parameter model of tri-axial Magnetometers, based on experimental design of Tri-axial accelerometers, a 12-observation experiment scheme, whose observations are located in the vertices of an icosahedron, is presented to reduce estimation error. As this 12-observation scheme is proved to be rotatable, before experiment, it is not required to identify the direction of the magnetic field of the Earth. For this 12-observation experiment scheme, a simple parameter estimation algorithm is presented, which can be easily implemented in a micro-controller with low computational capacity. Although, this calibration method utilizes the projections of the local Earth magnetic field as calibration inputs, a high precision turntable is not essential for ensuring desired calibration accuracy.
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