Study on AC Electromagnetic Tracker for Human-Computer Interaction
HU Xiao-ming · Acta Simulata Systematica Sinica · 2002
Electromagnetic tracking systems are widely used in Virtual Reality and computer simulation system to measure the attitude and position of the users hand or head to perform Human-Computer Interaction. The shortcomings of the present direct current electromagnetic tracker are analyzed and an alternative current electromagnetic tracking system with the alternative current source is proposed. The structure of the proposed system is studied and the iterative digital correlation algorithm used for calculating the received data is deducted. The relationship between the parameter and the performance of the algorithm is discussed. The simulation result proves the effectiveness of the proposed algorithm. Actual alternative current electromagnetic tracking system can be designed on the basis of the theoretical analysis of this paper.