"Ultrasonic Calibration of a Magnetic Tracker in a Virtual Reality Space"

Ultrasonic Calibration of a Magnetic Tracker in a Virtual Reality Space

Ghazisaedy, M., Adamczyk, D., Sandin, D., Kenyon, R., DeFanti, T.

• Publication: Research Triangle Park, NC
• PDF: soniccavecal.pdf

This paper describes a system for calibrating the position component of a 6-degree-of-freedom magnetic tracker by comparing the output with a custom-built ultrasonic measuring system. A look-up table, created from the collected difference data, is used to interpolate for corrected values. The error of the resulting corrected magnetic tracker position is measured to be less than 5% over the calibrated range.