【摘要】 以新台高速公路DEM制作实验项目为例,介绍了激光雷达技术,详述了点云获取与处理、DEM制作的过程;通过大量高程检核数据与对应的点云及DEM高程值进行比较、统计与分析,得到的点云、DEM高程中误差完全符合规范要求,得出利用激光雷达技术生产高精度DEM是完全可行的结论,另外,指出DEM生产过程中容易出现的问题并提出了对应的解决办法。更多还原

【Abstract】 The application of laser radar technology is introduced with an example of DEM production of XinzhouTaierzhuang highway,and the obtaining and processing process of point clouds and the producing process of DEM are described in detail. A large number of height check data is compared with the corresponding point cloud data and DEM elevation values. The result is that the errors of the obtained point cloud data and DEM elevation can meet the requirements.It is concluded that the use of laser radar technology to produce the high precision DEM is completely feasible. In addition,it is pointed out that some problems are easy to occur in the process of DEM production,and the corresponding solutions are put forward.更多还原