Making regular GPS ultra-precise
6 days ago
- #autonomous-vehicles
- #GPS
- #urban-navigation
- Self-driving cars require ultra-precise GPS for safe navigation.
- Urban environments disrupt GPS signals due to reflections and obstructions from buildings.
- NTNU researchers developed SmartNav, a system to improve GPS accuracy in cities.
- Combining carrier-phase positioning with PPP-RTK and Google's 3D models enhances precision.
- Testing in Trondheim achieved accuracy better than 10 cm 90% of the time.
- PPP-RTK makes high-precision GPS affordable for mass-market receivers.
- RTK and PPP are methods to correct GPS errors, with PPP-RTK combining their benefits.