无人机后差分在大比例尺地形测绘中的应用研究

Application of post difference of UAV in large scale topographic mapping

本文以遵化市石门镇的航测项目为实例,使用UAV软件对POS数据进行后差分结算并使用Pix4Dmapper进行空中三角测量,使用ArcGis对正射影像中的特征地物进行坐标提取并与实地测得的坐标数据进行对比。最后对使用后差分技术像控点布设较少的情况下,无人机能否满足大比例尺地形图测绘进行了分析。

Taking the aerial survey project of Shimen Town in Zunhua City as an example,this paper uses UAV software to carry out post-differential settlement of POS data and uses Pix4Dmapper to implementing aerial triangulation.ArcGis is used to extract the coordinates of the features in orthophoto images and to compare them with the coordinate data measured in the field.Finally,the paper analyzes whether the UAV can satisfy the mapping of large scale topographic map under the condition that the image control points of the differential technique are less set up after the use of the differential technique.