Predicting GNSS Availability in Urban Canyons: A Scalable Automated 3D Ray-Tracing Approach Integrating OpenStreetMap and Terrain Elevation Data
Continuous and reliable GNSS positioning is a requirement for autonomous driving and Intelligent Transportation Systems. While techniques such as RTK provide centimeter-level accuracy in open-sky conditions, their performance severely degrades in urban canyons due to Non-Line-of-Sight (NLOS) reception. Traditional auto...