Volume 34 Issue 2
Mar.  2014
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Zhang Zhenqi, Li Lei, Zhou Bin, Zhang Yiteng. A method of in-orbit calibration of fluxgate magnetometer based on the measurement of absolute scalar magnetometer[J]. Journal of Space Science, 2014, 34(2): 235-241. doi: 10.11728/cjss2014.02.235
Citation: Zhang Zhenqi, Li Lei, Zhou Bin, Zhang Yiteng. A method of in-orbit calibration of fluxgate magnetometer based on the measurement of absolute scalar magnetometer[J]. Journal of Space Science, 2014, 34(2): 235-241. doi: 10.11728/cjss2014.02.235

A method of in-orbit calibration of fluxgate magnetometer based on the measurement of absolute scalar magnetometer

doi: 10.11728/cjss2014.02.235
  • Received Date: 2013-03-20
  • Rev Recd Date: 2014-01-06
  • Publish Date: 2014-03-15
  • High precision measurement of the magnetic field is required for in-orbit magnetic field monitoring and mapping. Due to the restrictions of processing technology and installation, the three axes of fluxgate magnetometer cannot be strictly orthogonal and the offsets in three directions are unknown in actual measurement. To solve this problem, it is necessary to determine the alignment and offset of the fluxgate magnetometer in-orbit instead of on the ground. According to the method of calibrating with scalar magnetometer, a method for calibrating the alignment, sensitivity, and offset by an improved least square calibration algorithm is proposed. Results show that considering the noise of detector itself, the error of fluxgate magnetometer can be reduced from about 100nT to less than 0.2nT. This calibration algorithm offers a feasible way of in-orbit high-precision measurements.

     

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