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Proceedings Paper

Calibration and correction of the device measuring magnetic gradient tensor
Author(s): Yu Huang; Li-hua Wu; Kui-Ying Yin
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Paper Abstract

Generally, four three-axis magnetometers (TAMs) are used to measure magnetic gradient tensor. But the measurement precision of magnetic gradient tensor is tightly connected with the imperfect performance of sensors such as non-orthogonality, different scale factors and biases among sensitive axes, misalignment between different TAMs. It is necessary to calibrate and correct the measurement device to obtain precise magnetic gradient tensor. A mathematical model for calibration of the device measuring magnetic gradient tensor is established, and the calibration algorithm and its steps based on functional link artificial neural network (FLANN) and least-squares method (LSM) are proposed. The numerical simulations prove the effectiveness and good convergence of calibration algorithm, which can improve remarkably the measurement precision of magnetic gradient tensor.

Paper Details

Date Published: 19 March 2013
PDF: 7 pages
Proc. SPIE 8762, PIAGENG 2013: Intelligent Information, Control, and Communication Technology for Agricultural Engineering, 876211 (19 March 2013); doi: 10.1117/12.2019694
Show Author Affiliations
Yu Huang, Harbin Engineering Univ. (China)
Li-hua Wu, Harbin Engineering Univ. (China)
Kui-Ying Yin, Nanjing Research Institute (China)


Published in SPIE Proceedings Vol. 8762:
PIAGENG 2013: Intelligent Information, Control, and Communication Technology for Agricultural Engineering
Honghua Tan, Editor(s)

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