快速获取地面三维数据的LIDAR技术系统

A LIDAR Technological System for Acquiring Quickly 3D Terrain Data

机载激光扫描获取地面三维数据的 L IDAR系统是最近几年出现的高新技术系统之一。L IDAR系统是一个先进的主动传感系统 ,该系统本身发射受控制的激光以照射地面和地面上的目标 ,不依赖太阳光照 ,所以它是一个全天时日夜可以获得地面三维数据的系统。它直接获取地面三维数据比传统测量方法具有高精度、高密集、高效率和成本低的优点。该系统强大的后处理技术可以把地面和其上的植被、建筑物分离开来 ,可同时取得 DTM。

The airborne laser scan system LIDAR for acquiring 3D terrain data is a new advanced technological system. It's an advanced and active remote sensing system. The LIDAR itself emits the laser controlled to illuminate the Earth and the objects on it. It is not the dependence of sunshine. So LIDAR is a system which can acquiring 3D terrain data day and night.There are the advantages of high precision,high density,high efficient and low cost in LIDAR, so that its method of aquiring directly 3D terrain data is better than the conventional survey. The post processing technology can seperate pure terrain from the other canopy surface, and can measure the DTM,DSM and vegetation data simultaneously.