Raw data from Lidar sensor

Cloud of points irregularly arranged on the ground; the values of the GPS time at which the measurement was carried out, the plane coordinates in the UTM plane projection (East and North) defined in the geodetic reference system ETRS89, the ellipsoid altitude and the intensity determined for each return (up to 4) of the laser beam shall be associated with each detected point. The cloud of points that you obtain contains all the surface and natural elements present in the territory (vegetation, artifacts, buildings, etc.), on which are made the subsequent processing that allows to obtain DTM and DSM.

地面上不规则分布的点云，每个检测点均需关联以下信息：测量时刻的GPS时间、以大地参考系统ETRS89定义的UTM平面投影坐标系下的平面坐标（东向、北向分量）、椭球高程，以及激光束每一次回波（最多4次）的强度值。所得点云涵盖研究区域内所有地表与自然要素（包括植被、人工地物、建（构）筑物等），后续可基于该点云开展处理以生成数字地面模型（DTM, Digital Terrain Model）与数字表面模型（DSM, Digital Surface Model）。