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Chinese Journal of Space Science ›› 2018, Vol. 38 ›› Issue (6): 953-959.doi: 10.11728/cjss2018.06.953

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Vector Calibration Method for Orthogonality Correction of Three-axis Magnetometers

WANG Pengfei1, ZENG Li1, TANG Wenqing1, WANG Jing2   

  1. 1. School of Space and Environment, Beihang University, Beijing 100191;
    2. Shandong Institute of Space Electronic Technology, Yantai 264670
  • Received:2017-09-27 Revised:2018-02-28 Online:2018-11-15 Published:2018-11-30

Abstract:

An vector calibration method is proposed based on the error separation technique for orthogonality correction of three-axis magnetic sensor. Mathematical model of vector calibration was established for orthogonality correction. The installation error in the process of correction was calibrated by the error separation technique. Model parameters were solved with a kind of method which combined the Kalman filtering and least square method and got a matrix that can be used to the orthogonality correction. The simulation and experiment results showed that the whole calibration process was feasible and effective. The error reduced from 0.0962nT to 0.0019nT in the case of total magnetic field was 2.5nT. This method has been applied to the orthogonality correction of an satellite-boneinduction magnetometer.

Key words: Three-axis magnetometers, Orthogonality correction, Vector calibration, Installation error

CLC Number: