The design of high precision three axis fluxgate magnetometer
For the field of weak magnetic anomaly measurement,a high precision three axis fluxgate magnetometer MAG-XYZ is designed,which has a wide dynamic measurement range(0~± 100000nT),high measurement accuracy(24-bit analog-to-digital converter)and 2K Hz sampling rate.The basic working principle of FGM3D/100 sensor is described,and the composition of the three axis fluxgate magnetometer is introduced in detail.Aiming at the three-channel scale factor and zero deviation of the magnetometer acquisition unit,a multi-channel inconsistency correction of the magnetron acquisition system with least squares method is proposed.And compared with the GSM-19T proton magnetometer,the RMS error of the three axis fluxgate magnetometer is reduced from 1.506 to less than 0.157.It is shown that the method can effectively reduce the error,and improve the accuracy of the three-component magnetometer.
weak magnetic anomaly three axis fluxgate magnetometer channel difference least squares method proton magnetometer
Yang Gao Zhihua Li Yongtao Li Fuping Gan
School of Automation,China University of Geosciences,Wuhan,430074,China Institute of Geophysics & Geomatics,China University of Geosciences,Wuhan,430074,China Key Laboratory of Karst Dynamics by MLR & Guangxi of PRC,IRCK by UNESCO,Guilin 541004,China
国际会议
重庆
英文
249-253
2017-10-03（万方平台首次上网日期，不代表论文的发表时间）