In-Flight Magnetometer Calibration with Temperature Compensation for PHOENIX CubeSat

Abstract

PHOENIX is a 2U CubeSat in the QB50 project that is designed assembled integrated tested and operated by National Cheng Kung University Taiwan After the deployment from International Space Station (ISS) in May 2017 extensive studies on magnetometer calibration have been conducted The performance of attitude determination and control subsystem (ADCS) for PHOENIX depends on the reliability and accuracy of magnetometer calibration The thesis is concerned with the in-flight magnetometer calibration which will be naturally 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 estimate of calibration parameters The proposed model and method are verified and tested by using in-flight data from PHOENIX It has 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 the mechanism of temperature compensation The proposed approach is believed to be beneficial for small satellites and CubeSats that rely on the use of magnetometer data for attitude determination orbit determination and attitude control

Date of Award	2018 Aug 25
Original language	English
Supervisor	Jyh-Chin Juang (Supervisor)