project activities

The project is the first of its kind for the integration of the methodologies used and also for the extent and ubiquity of the survey on an urban scale.

To obtain the required accuracy (altimetry 1 cm and planimetric 2 cm) in detecting elevation model of the pavement of the city, have been used four different types of relief:

1. GPS
2. planimetric
3. altimetric
4. laser

The GPS network (65 strongholds in town) is the general picture. The planimetric intensification network connects every city street to the main network. The level of high precision reaches each of the over 4,400 strongholds. Pad connects the laser point clouds to the network  (more than 2,500 points per square meter).