Automatic calibration of magnetic tracking
Mingke Wang, Qing Luo, Yasha Iravantchi, Xiaomeng Charlene Chen, Alanson P. Sample, Kang Geun Shin, Xiaohua Tian, Xinbing Wang, Dongyao Chen · Proceedings of the 28th Annual International Conference on Mobile Computing And Networking · 2022
Magnetic sensing is emerging as an enabling technology for various engaging applications. Representative use cases include high-accuracy posture tracking, human-machine interaction, and haptic sensing. This technology uses multiple MEMS magnetometers to capture the changing magnetic field at a close distance. However, magnetometers are susceptible to real-world disturbances, such as hard- and soft-iron effects. As a result, users need to perform a cumbersome and lengthy calibration process frequently, severely limiting the usability of magnetic tracking.