Magnetic distortion

This is an IMU dataset of human arm motions.

Users wear a smart watch that is equipped with IMU sensors.

A VR controller is attached to a smart watch to provide orientation and location ground truth. 

The orientation and location ground truth is accurately calibrated using techniques proposed in 'Real-time tracking of smartwatch orientation and location by multitask learning'.

This dataset contains magnetic distortion feature in many data traces, which means the magnetic field does not always point to the same direction (i.e., north) in global reference.