IEEE Open Journal of Vehicular Technology

Researchers at the University of Osaka and collaborators developed an ultra-wideband (UWB) radio-based positioning method for electric vehicle wireless charging. By combining signal travel times, phase differences, and calibration, the system accurately estimates the position and orientation of a vehicle's charging coil relative to a charging pad. Laboratory experiments using a scaled-down vehicle mockup achieved median errors of 2.32 millimeters and 0.25 degrees, a promising step toward automated wireless charging for self-driving vehicles.