This shows an example of short-term position tracking with a 9 degrees-of-freedom (dof) inertial measurement unit (IMU) that includes triaxial accelerometers, gyroscopes, and magnetometers made by APDM, Inc. The algorithm includes orientation tracking, which is sometimes called an attitude and heading reference system (AHRS). This is a work in progress and better performance is possible with further improvements in the tracking algorithm and calibration.

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