Starting in 2006, the Schulich School of Engineering, through its PLAN Group has developed and tested, in collaboration with Own The Podium/À Nous le Podium 2010 and Alpine Canada Alpin, an ultra-precise, ultra-light and autonomous sensor, namely STEALTH™, the Sensor for the Training of Elite Athletes, to support the Canadian Alpine Ski Team during training. The GPS-GLONASS based sensor has proven to operate very well under a variety of conditions and is now used routinely by the ski team. This paper will describe the requirements and trials that resulted in the current system. A description of the sensor components, assembly, mode of operation, technical specifications and performance is presented. The positioning and motion components displayed to athletes and coaches for performance evaluation are described using data collected on ski sl is in the Canadian Rockies and elsewhere.
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