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Article

An Aeromagnetic Compensation Method Based on a Multimodel for Mitigating Multicollinearity

1
School of Computer Science and Technology, Harbin Institute of Technology, Harbin 150001, China
2
State Key Laboratory of Advanced Optical Communication Systems and Networks, Department of Electronics, and Center for Quantum Information Technology, Peking University, Beijing 100871, China
3
Hangzhou Applied Acoustic Institute, Hangzhou 310023, China
*
Authors to whom correspondence should be addressed.
Sensors 2019, 19(13), 2931; https://doi.org/10.3390/s19132931
Received: 24 May 2019 / Revised: 28 June 2019 / Accepted: 30 June 2019 / Published: 3 July 2019
(This article belongs to the Special Issue Magnetic Sensing Technology, Materials and Applications)
Aeromagnetic surveys play an important role in geophysical exploration and many other fields. In many applications, magnetometers are installed aboard an aircraft to survey large areas. Due to its composition, an aircraft has its own magnetic field, which degrades the reliability of the measurements, and thus a technique (named aeromagnetic compensation) that reduces the magnetic interference field effect is required. Commonly, based on the Tolles–Lawson model, this issue is solved as a linear regression problem. However, multicollinearity, which refers to the case when more than two model variables are highly linearly related, creates accuracy problems when estimating the model coefficients. The analysis in this study indicates that the variables that cause multicollinearity are related to the flight heading. To take this point into account, a multimodel compensation method is proposed. By selecting the variables that contribute less to the multicollinearity, different sub-models are built to describe the magnetic interference of the aircraft when flying in different orientations. This method restricts the impact of multicollinearity and improves the reliability of the measurements. Compared with the existing methods, the proposed method reduces the interference field more effectively, which is verified by a set of airborne tests. View Full-Text
Keywords: magnetometer; aeromagnetic survey; aeromagnetic compensation; linear regression; multicollinearity magnetometer; aeromagnetic survey; aeromagnetic compensation; linear regression; multicollinearity
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MDPI and ACS Style

Zhao, G.; Han, Q.; Peng, X.; Zou, P.; Wang, H.; Du, C.; Wang, H.; Tong, X.; Li, Q.; Guo, H. An Aeromagnetic Compensation Method Based on a Multimodel for Mitigating Multicollinearity. Sensors 2019, 19, 2931. https://doi.org/10.3390/s19132931

AMA Style

Zhao G, Han Q, Peng X, Zou P, Wang H, Du C, Wang H, Tong X, Li Q, Guo H. An Aeromagnetic Compensation Method Based on a Multimodel for Mitigating Multicollinearity. Sensors. 2019; 19(13):2931. https://doi.org/10.3390/s19132931

Chicago/Turabian Style

Zhao, Guanyi, Qi Han, Xiang Peng, Pengyi Zou, Haidong Wang, Changping Du, He Wang, Xiaojun Tong, Qiong Li, and Hong Guo. 2019. "An Aeromagnetic Compensation Method Based on a Multimodel for Mitigating Multicollinearity" Sensors 19, no. 13: 2931. https://doi.org/10.3390/s19132931

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