Explicit Solution for Magnetometer Calibration

doi:10.1109/TIM.2014.2330446

Return

Explicit Solution for Magnetometer Calibration

2014-08-01

PRE

Elder M. Hemerly *

Fernando A. A. Coelho

DOI：10.1109/TIM.2014.2330446

Original

Original request for help

Save

Abstract

En 中文

A definitive solution is provided in this paper for solving the magnetometer calibration problem by means of ellipsoid fitting. This is achieved by providing an explicit solution for the ensuing constrained least squares problem, which requires a careful exploitation of the design matrices and a detailed analysis of symbolically calculated eigenvalues and eigenvectors. The end result is a direct solution for the magnetometer calibration problem without any recursive loop whatsoever. This is the most favorable solution one can expect for the magnetometer calibration problem, since now the computation time is exclusively determined by the number of data points. Hence, this solution is numerically reliable, fast, and particularly relevant for sliding window adaptive calibration. Simulation results show that the proposed solution is more accurate and faster than the best one available so far.

Keywords:

Autocalibration

constrained least squares

ellipsoid fitting

magnetometer calibration

parameter estimation

AI Summary

Key information extracted from the uploaded paper, including a brief overview, abstract, background, key highlights, visual analysis, and future outlook.