Electromagnetic trackers generally work on the principle that an electromagnetic fiducial creates an electromagnetic field, or modifies an electromagnetic field which has been transmitted near it. U.S. Pat. No. 5,513,854 describes a system in which each player on a field carries a miniaturized RF transmitter. RF goniometric receivers determine the direction of the transmitted signals, and triangulation methods are used to determine the position of the transmitters. Although other motion capture systems may also utilize the Global Position System (“GPS”) to track the positions of objects, these solutions are often relatively slow, inaccurate (˜3 meter positional accuracy) and expensive.
Gyro bias stability 10º/h
Roll/Pitch Static 0.2º | Dynamic 0.3º
Yaw 0.5 deg
Position / velocity X
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