Calibration of Strapdown Three-axis Magnetometer and Measurement Error Compensation of GeomagneticField Based on Total Least Squares

doi:10.3969/j.issn.1000-1093.2012.10.008

Abstract

Abstract: A method of simultaneous magnetometer calibration and measurement error compensation of geomagnetic field was proposed. A parameterized model comprising sensor calibrating error and measurement error of geomagnetic field was constructed by an error analysis through the measurement. Those parameters in the model were estimated using total least squares (TLS) based algorithm, according to the spread of measurement noise. Compared with the traditional least squares (LS) based algorithm, both simulated results and experimental results show that the TLS based algorithm achieved higher estimated precision and better compensation.

Key words: information processing, three-axis magnetometer, calibration, measurement error compensation, total least squares

CLC Number:

V249.32

WU Zhi-tian, WU Yuan-xin, HU Xiao-ping, WU Mei-ping. Calibration of Strapdown Three-axis Magnetometer and Measurement Error Compensation of GeomagneticField Based on Total Least Squares[J]. Acta Armamentarii, 2012, 33(10): 1202-1209.

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