低空机载LiDAR遥感技术在交通困难矿区地形测量中的应用

Application of low altitude airborne LiDAR remote sensing technology in topographic mapping in poor condition mining areas

鉴于榆横矿区道路网稀疏,外业像控工作巨大,采用传统航空摄影测量可行性较低,本文基于低空机载激光雷达测量系统(Light Detection and Ranging,LiDAR)具备的“机动测绘”“主动测绘”和“密集测绘”高效数据获取优势的特点,提出采用低空机载LiDAR进行地形测绘任务生产,同时抽取验证区域进行传统航空摄影测量精度验证,并对比两种方式在交通困难矿区的生产应用情况。验证结论表明:1)低空机载LiDAR地形测绘精度优于传统航空摄影测量;2)低空机载LiDAR是榆横矿区最高效的数据获取方式;3)集成化机载LiDAR系统经过一次飞行即可高效生产高精度“4D”测绘产品。

Since the production difficulties caused by the sparse road network and huge amount of field control works in poor condition survey area in Yulin-Hengshan mining area,it is not feasible to use tradi⁃tional aerial photogrammetry.Based on the unique high-efficiency data acquisition methods of“mobile mapping”,“active mapping”,and“intensive mapping”of the low altitude airborne LiDAR remote sensing mapping technology system,this paper puts forward to use low altitude airborne LiDAR for topographic mapping task production.At the same time,an area is selected for verification so to compare the accuracy of traditional aerial photogrammetry,and the production application of the two methods in poor condition mining areas are compared.The verification results show that:1)low altitude airborne LiDAR topographic mapping accuracy is better than traditional aerial photography;2)low altitude airborne LiDAR is the most efficient data acquisition method in Yulin-Hengshan mining area;3)the integrated airborne LiDAR system can efficiently produce high-precision“4D”mapping products in one flight.