无人机航测技术在道路测量中的应用

Application of UAV Photogrammetry Technology in Road Survey

依托无人机航测技术,高效获取道路沿线高分辨率低空影像,在数据处理过程,应用差分GNSS辅助空中三角测量模型,并配合稳健的运动恢复结构技术提升对地定位精度,进而生产出高精度DEM、DOM数据,便于道路规划设计与施工。最后针对丘陵地带的某段公路开展了航拍实验。以本文方法生产的地理信息成果,仅依靠少量的外业控制点,即可满足道路测量精度要求,具有较高的经济效益和实际意义。

This paper relies on UAV aerial survey technology to efficiently obtain high-resolution low-altitude images along the road.In the data processing process,differential GNSS assisted aerial triangulation model is applied,and robust motion recovery structure technology is used to improve the ground positioning accuracy,so as to produce high-precision DEM and DOM data,which is convenient for road planning,design and construction.Aerial photography experiment is carried out for a section of highway in hilly area,and the geographic information results produced by this method are obtained.Only a small number of field control points can meet the requirements of road measurement accuracy,which has high economic benefits and practical significance.