摘要
在水利工程地形测量中,经常遇到大面积植被覆盖的情况,传统测量方法效率较低、准确性较低。为了能够准确、快速获取数字高程模型和地形图,本文利用机载激光雷达测量技术,结合实际案例对激光雷达测量的高程和平面位置进行精度分析。通过网络RTK测量和激光雷达测量这两种测量方法,对在裸露地表、高大树林覆盖下的地表和低矮草丛覆盖下的地表的高程和平面位置进行对比,获得机载激光雷达测量的方法在这些地表情况下的误差差值并进行精度评定。通过对比结果得到,机载激光雷达的测量方法可以满足1∶1000比例尺地形图测量要求。
In the topographic survey of water conservancy engineering,it is often encountered that large areas covered with vegetation,and the traditional surveying methods are less efficient and less accurate.In order to be able to obtain the digital elevation model and topographic map accurately and quickly,this paper uses airborne LiDAR surveying technology,and analyzes the accuracy of the elevation and plane position of LiDAR surveying combined with practical cases.The two surveying methods of network RTK and LiDAR surveying,were used to compare the elevation and plane position of the surface in the bare ground,the surface covered by tall trees and the surface covered by low grass,and to obtain the error difference value of the airborne LiDAR surveying method in the case of these surfaces and to evaluate the accuracy.Through the comparison results,it is obtained that the surveying method of airborne LiDAR can meet the surveying requirements of topographic map with the scale of 1∶1000.
作者
杨林鸽
凡海东
YANG Linge;FAN Haidong(Zhengzhou Water Conservancy Construction Survey and Design Institute Group Co.,Ltd.,Zhengzhou 450000,Henan,China;Jilin Ruicheng Safety Technology Co.,Ltd.,Zhengzhou 450007,Henan,China)
出处
《资源信息与工程》
2025年第3期65-68,共4页
Resource Information and Engineering
关键词
机载激光雷达
地形测量
数字高程模型
误差分析
airborne LiDAR
topographic survey
digital elevation model
error analysis
