Baidu Maps Tech Team
Nov 16, 2016 · Fundamentals
Why High‑Precision GPS Still Struggles in Urban Canyons and Tunnels
This article examines the principles of differential satellite positioning, the technical and environmental challenges that prevent centimeter‑level accuracy in dense urban areas, bridges, and tunnels, and explores practical workarounds and future visions for truly high‑precision navigation.
Differential PositioningGPSHigh Precision Navigation
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