An Active Position Sensing Tag for Sports Visualization in American Football Darmindra D. Arumugam1, Michael Sibley2, Joshua D. Griffin3, Daniel D. Stancil4, David S. Ricketts5 1Jet Propulsion Lab., California Institute of Technology, Pasadena, CA, Email:
[email protected] 2Tait Towers, Lititz, PA, Email:
[email protected] 3Disney Research, Pittsburgh, PA, Email: joshdgriffi
[email protected] 4,5North Carolina State University, Raleigh, NC, Email:
[email protected] [email protected] Receive Loops Abstract—Remote experience and visualization in sporting 34 5 6 events can be significantly improved by providing accurate ADC tracking information of the players and objects in the event. Magnetic Field Lines Filter Sporting events such as American football or rugby have proved Amp. difficult for camera- and radio-based tracking due to blockage 2 7 of the line-of-sight, or proximity of the ball to groups of players. Magnetoquasistatic fields have been shown to enable accurate Loop Transmitter position and orientation sensing in these environments [1]–[3]. In Antenna Battery 1 1 8 0 this work, we introduce a magnetoquasistatic tag developed for 0 tracking an American football during game-play. We describe its 1 integration into an American football and demonstrate its use in game-play during a collegiate American football practice. Fig. 1. Magnetoquasistatic positioning system setup. The football is equipped with an integrated transmitter that emits quasistatic magneticfields.Eight I. INTRODUCTION receivers, positioned around region of the field extending from the back of the end-zone to the ten yard line, were used to track the ball from the back The use of camera-based and wireless localization technol- of the end-zone to approximately the 15 yard line.