摘要
文章依托西部山区复杂地形测绘项目,系统探索无人机摄影测量技术在高差较大区域的工程化应用,通过构建固定翼与多旋翼无人机协同作业机制,结合实时差分定位(real-time kinematic,RTK)技术与五镜头倾斜摄影技术,将测绘区域的平面误差控制在7.8 cm以内,高程误差控制在11.8 cm以内;针对矿区高反射煤堆表面,采用100 m仿地飞行模式与80 pts/m^(2)点云密度优化策略,显著提高其几何特征表达准确率;建立灾害应急响应流程,可在2 h内完成滑坡区域扫描作业。结果表明,该技术通过动态调整点云密度以及匹配地形特性,可获取厘米级精度的地形数据,为复杂环境下工程规划提供精确的地形基础资料。
Based on the complex topographic surveying and mapping project in western mountainous regions,this paper systematically explores the engineering application of UAV photogrammetry technology in areas with large elevation difference.By establishing a collaborative operation mechanism between fixed-wing UAV and multi-rotor UAV,combined with Real-Time Kinematic(RTK)technology and five-lens oblique photography technology,the plane error in the surveying and mapping area is controlled within 7.8 cm,and the elevation error is controlled within 11.8 cm;in view of the surface on highly-reflective coal piles in mining areas,100 m ground-following flight mode and 80 pts/m^(2) point cloud density optimization strategy are adopted to significantly improve the accuracy of geometric feature expression;The disaster emergency response workflow is established,enabling completion of landslide area scanning within 2 h.The results show that the technology can obtain centimeter-level terrain data by dynamically adjusting the point cloud density and matching the terrain characteristics,providing accurate topographic basic data for engineering planning in complex environments.
作者
何明洋
HE Mingyang(Chongqing Dazu District Planning Design and Survey Institute,Chongqing 402360,China)
出处
《工程技术研究》
2025年第17期223-225,共3页
Engineering and Technological Research
关键词
地形测绘
无人机摄影测量
复杂地形
精度优化
topographic surveying and mapping
UAV photogrammetry
complex terrain
accuracy optimization
