无人机航测技术在高速公路勘测及辅助选线中的应用

The application of UAV aerial photogrammetry in the expressway surveying and auxiliary line selection

低空无人机航测技术以其高分辨率、高几何精度、操作灵活、低成本的特点,已成为传统航空摄影测量技术应用的有效补充和延伸。近年来,公路勘测及选线辅助决策对高分辨率影像及真三维模型的需求越来越高。本文结合北京某高速公路勘测及选线辅助决策的工程实例,根据无人机航摄技术平台构成及技术特点,建立了一套无人机航测方法及工作流程,应用生成的数字正射影像图、DEM模型,通过空间信息技术建立三维可视化展示模型,基于自主研发的道路工程选线辅助决策系统实现在复杂地形区域的优化选线决策。

With the rapid development of low altitude UAV aerial surveying technology in recent years, ＇l and its characteristics of high resolution, high geometric precision, flexible operation, low cost, UAV aerial photogrammetry has become an effective complement and extension of traditional aerial photogrammetry. In recent years, highway survey and line selection assistant decision-making require high resolution imaging and 3D model. In this paper, combined with example of highway survey and expressway line selection in Beijing, based on unmanned aerial photogrammetrie technology and the UAV aerial platform structure, we established a set of UAV aerial photogrammetry surveying methods and working processes, and build three-dimensional visual display model from the product of digital orthophoto map, DEM model, through the spatial information technology, realized- independent research and development of railway route selection decision aided system in actual work of the optimization of line selection in complex terrain region.