Head Tracking for 3D Audio Using a GPS-Aided MEMS IMU

Jacque M. Joffrion, and John F. Raquet

Abstract:	The benefits of integrating GPS and INS are well known in the area of navigation, but this is not the only area that can reap the benefits of this powerful synergy. INS / GPS integration can also be used for applications that require only attitude information, such as head tracking. This paper describes the preliminary development and testing of a head tracking system for use in general aviation. The prototype system uses an Xsens Motion Technologies MT9-B IMU and a Garmin GPS-35 integrated GPS receiver and antenna unit. Real-time data from both of these systems are sent to a laptop computer where a real-time Kalman filter is implemented in MATLAB to solve for position and attitude. The attitude information is sent to a 3D audio system for sound direction rendering. The system has been designed to fly in a Beechcraft C-12 aircraft as part of a USAF Test Pilot School project in October of 2004. The accuracy of the system will be measured by comparing its output to a high-quality tactical-grade inertial navigation system integrated with GPS. The system hardware and integration algorithms are described, and preliminary results are presented for static ground testing.
Published in:	Proceedings of the 2004 National Technical Meeting of The Institute of Navigation January 26 - 28, 2004 The Catamaran Resort Hotel San Diego, CA
Pages:	252 - 259
Cite this article:	Joffrion, Jacque M., Raquet, John F., "Head Tracking for 3D Audio Using a GPS-Aided MEMS IMU," Proceedings of the 2004 National Technical Meeting of The Institute of Navigation, San Diego, CA, January 2004, pp. 252-259.
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