1∶1000航测法地形图更新关键技术及应用研究  

Research on Key Technologies and Applications of 1∶1000 Scale DLG Aerophotogrammetric Updating Based on UAV

作　　者：孙长奎 SUN Changkui(Jiangsu Provincial Geomatics Center,Nanjing 210013,China)

机构地区：[1]江苏省基础地理信息中心,江苏南京210013

出　　处：《测绘与空间地理信息》2024年第8期80-84,共5页Geomatics & Spatial Information Technology

基　　金：江苏省自然资源科技项目——自然资源三维立体时空数据库分布式架构设计与一体化集成技术研究(2021052)资助。

摘　　要：以低空无人机航空摄影测量技术为数据获取手段,运用航测法生产大比例尺地形图逐渐成为行业发展的趋势。本文开展无人机航摄大比例尺地形图更新方法的研究:首先,从传感器、相机、像控点、空中三角测量4个角度对航测法地形图更新的关键技术进行了详细的阐述;然后,以1∶1 000大比例尺地形图更新精度要求为标准,通过实际生产项目对其中的关键环节进行了精度验证分析。结果表明:在相机检校的基础上,辅以稀少地面像控点,借助高精度POS辅助空中三角测量的方法可满足1∶1 000大比例尺地形图更新精度需求。该研究的开展可为地形图生产提供参考。Using low-altitude UAV aerial photogrammetry technology as a mean of data acquisition,the production of large-scale topographic maps by aerophotogrammetric method gradually becomes the trend of industry development.In this paper,we conduct a study on the updating method of UAV aerophotogrammetric large scale topographic maps:firstly,we elaborate the key technologies of aerophotogrammetric topographic map updating from four perspectives:sensors,cameras,image control points and aerial triangulation;then,we analyze the accuracy verification of the key links through the actual production project by using 1∶1000 large scale topographic map updating accuracy requirement as the standard.The results show that the 1∶1000 large-scale topographic map updating accuracy requirements can be met by the method of aerial triangulation aided by high-accuracy POS on the basis of camera calibration,supplemented by sparse ground image control points.The study can provide a reference for the production of large scale topographic maps.

关 键 词：无人机 摄影测量 地形图更新 关键技术 精度分析 

分 类 号：P231[天文地球—摄影测量与遥感]