机载LiDAR技术在从化市基础测绘中的应用

机载LiDAR是基础地理信息采集、更新的新型航测技术。本文采用机载LiDAR航测技术测制了从化市区域1 985 km2数字高程模型、数字正射影像、地形数据以及三维地形模型,基于EPS 2008开发了机载LiDAR测图系统,其创新点在于等高线生成、投影差改正,无立体像对的地理要素采集等方面。本文的技术方案作业效率高,实现了当年航摄当年生产,提供的测绘产品丰富且满足质量要求。

Application of Airborne LiDAR Technology in Basic Surveying and Mapping of Conghua

Airborne LiDAR is a new Aerial Photogrammetry technique,which is used to collect and update GIS data.In this paper,About 2000 km2 DEM,DOM,DSM,terrain data and 3D DSM are surveyed and processed by the technique,and the Airborne LiDAR Mapping system is developed based on EPS,The creative points is the generation of contour line,rectification of projection difference of the build,map suveying without stereopair,and so on.The surveying and mapping system is built on Airborne LiDAR,its efficiency is high,"aerial photogrammetry and topographic mapping in the same year" is realized,the products are rich and meet the quality requirement.