Description
The LIDAR technique involves the use of a laser scanner consisting of a laser transmitter, a receiver (a telescope) and a data acquisition system. What is obtained is a set of points to each of which is associated a datum relating to geographical coordinates, the altitude calculated on the basis of the time difference between the emitted and reflected signal, and the value of the reflected signal intensity. By analysing the reflected points, a multiple return of the signal can be observed and in the presence of dense vegetation the Lidar can penetrate by reflecting points at various levels of the foliage and on the ground, allowing then through appropriate processing to discriminate the impulses belonging to the ground from the impulses classifiable as tree and shrub surfaces, anthropic elements such as electric cables, bridges, buildings, etc.
For the territory of the Province of Trento from 27 October 2020 the following data are published and available for download
LiDAR PAT 2014 integrated with flights 2018
- DTM, DSM First, DSM Last and DBM (.ASC, .XYZ)
- raw data (.LAZ)
- sunshine 315° and 135° (.TIF)
- PAT 2015 orthophotos (.ECW)
Campolongo 2011 LiDAR
- DTM and DSM First (.ASC, .XYZ)
- raw data (.LAZ)
- sunshine 315° and 135° (.TIF)
- orthophoto Campolongo 2011 (.ECW)