A new misalignment calibration method of portable geomagnetic field vector measurement system

被引：8

作者：

Pang, Hongfeng ^{[1
]}

Pan, Mengchun ^{[2
]}

Qu, Wei ^{[1
]}

Qiu, Lei ^{[1
]}

Yang, Jun ^{[1
]}

Li, Yuntao ^{[1
]}

Wan, Chengbiao ^{[2
]}

Zhu, XueJun ^{[2
]}

机构：

[1] Space Engn Univ, Beijing 101416, Peoples R China

[2] Natl Univ Def Technol, Changsha 410073, Peoples R China

来源：

MEASUREMENT | 2020年 / 164卷

关键词：

Geomagnetic field vector; Misalignment calibration; Portable measurement system; Interim coordinate; MAGNETOMETERS;

D O I：

10.1016/j.measurement.2020.108041

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Geomagnetic field is widely used for remote sensing, environment observation, geoscience and geology research. A portable geomagnetic field vector measurement system is designed, but misalignment greatly influences measurement accuracy. It is calibrated by establishing interim coordinate without measuring the projection of geomagnetic field and gravity. In addition, earth's magnetic dip, the accurate attitude of equipment and careful operation in collection process are not need. It is easy to implement the experiment, and misalignment angles between sensors are calculated. Magnetometer, inertial navigation system, host platform frame and perpendicular platform are used in experiment. After calibration, North, Vertical and East vector measurement error are reduced to 3.9%, 4.7% and 6.6% respectively. Inclination and declination error are reduced from 4.374 degrees and 4.974 degrees to 0.173 degrees and 0.309 degrees respectively. Thus, it is convenient and effective for misalignment calibration. (C) 2020 Published by Elsevier Ltd.

引用

页数：7

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