Journal of Jilin University(Earth Science Edition) ›› 2019, Vol. 49 ›› Issue (3): 857-864.doi: 10.13278/j.cnki.jjuese.20190010

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Fast Processing Method of Aeromagnetic Compensation Based on Fluxgate Estimation

Zhao Xiao, Zheng Xiaocheng, Jiao Jian, Yu Ping, Dong Xiangxin   

  1. College of GeoExploration Science and Technology, Jilin University, Changchun 130026, China
  • Received:2019-01-14 Online:2019-06-03 Published:2019-06-03
  • Supported by:
    Supported by National Key R & D Program of China (2017YFC0602000)

Abstract: In aeromagnetic compensation flight, the magnetic field generated by aircraft attitude change seriously affects the accuracy of aeromagnetic data. In order to compensate the magnetic interference generated by aircraft, a compensation model is established based on Tolles-Lawson equation, the key of which is to calculate the value of direction cosine. Leach's directional cosine method based on three-axis fluxgate is used to build the aeromagnetic compensation system. According to the rotation relationship between the local horizontal coordinate system and the aircraft coordinate system, the theoretical model of airborne three-axis fluxgate data is established to solve the direction cosine. The method is applied to the aeromagnetic compensation data of a test site in Yunnan, and the standard deviation is selected as an indicator for evaluating the compensation effect. The compensation quality satisfies the industry standards, which verifies the effectiveness of the aeromagnetic compensation method based on fluxgate estimation.

Key words: aircraft magnetic interference, magnetic interference compensation, direction cosine, three-axis fluxgate, theoretical model

CLC Number: 

  • P631.2
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