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Small Satellite Conference
In-Flight Magnetometer Calibration with Temperature Compensation for PHOENIX CubeSat
Ming-Yang Hong, National Cheng Kung University
Poster Session 2
PHOENIX is one of 2U CubeSats in QB50 project. The CubeSat was designed, assembled, integrated, tested and operated by National Cheng Kung University, Taiwan. After the deployment from International Space Station (ISS) in May 2017, magnetometer calibration has been viewed as one of the important tasks during the mission operation. This paper is concerned with the in-flight magnetometer calibration which will naturally be influenced by the variation of temperature during the course of orbiting around the earth. A temperature-dependent magnetometer model is proposed and a particle swarm optimization method is adopted in the estimation of calibration parameters. The proposed model and method are verified and tested by using in-flight data from PHOENIX. It is shown that the use of the proposed model together with the optimization method renders a closer match between the magnitudes of the measurement vector and IGRF model. Additionally, the calibration method can be extended to find the suboptimal solution for the satellites with magnetometers without temperature compensation. The proposed approach is believed to be beneficial for small satellites and CubeSats that rely on magnetometer data for attitude determination, orbit determination, and attitude control.
Since July 19, 2018
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