The Statistical Analysis of Noise in Triaxial Magnetometers and Calibration Procedure
The Statistical Analysis of Noise in Triaxial Magnetometers and Calibration Procedure
复制标题
三轴磁力计噪声统计分析及标定程序
DOI：
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
J. Collin
中科院分区：
文献类型：
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作者：
Nhan Nguyen;P. Müller;J. Collin
本文探讨了三轴传感器，特别是磁力计的噪声的统计行为。统计检验表明，传感器噪声并不像通常认为的那样服从正态分布。除噪声外，还讨论了磁力计读数误差的其他来源。误差的综合影响由数学模型证明，该模型有助于在最大似然估计方案下校准磁力计读数。校准数据与传感器框架对齐，以便稍后应用于导航应用中，其中寻北问题通过真正的地磁读数来解决。
This paper examines the statistical behaviour of noise in triaxial sensors, particularly magnetometers. It is shown by statistical test that the sensor noise does not follow a Normal distribution as is commonly assumed. Beside noise, other sources of error in readings of magnetometers are discussed. The combined effects of errors are demonstrated by a mathematical model, which helps calibrating magnetometer readings under the Maximum Likelihood Estimator scheme. Calibrated data is aligned to the sensor frame in order to be applied later in navigation applications, where the North finding problem is solved by true geomagnetic readings.