| Summary: | We analyze the performance of a helmet-based frequency modulated continuous wave (FMCW) radar system for use in impact prediction in contact sports, or other risky environments. It has been shown that the head trauma and concussions can have significant detrimental effects on the health and quality life of contact sport athletes, from the high school to professional level. Impact prediction capability could be an important part of a comprehensive, helmet-based system for mitigating the neurological damage caused by impacts. Mitigation strategies include using imminent impact information in an audible warning system, or dynamic preloading and control of an active helmet suspension. Our analysis centers on the prediction of an impact offset parameter (and its uncertainty) in a representative player interaction scenario. We consider realistic radar measurement specifications consistent with our player interaction scenario, and COTS radar hardware, including oscillator phase noise, operation frequency, sweep frequency, bandwidth, range, target scattering cross-section, and antenna gain.
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