差分GNSS倾斜摄影在山区公路勘察设计中的应用

采用差分GNSS提高飞行POS精度,对带有高精度POS信息的影像进行空三影像匹配与平差运算,讨论同一区域采用不同数量像控点,参与空三平差对空三精度和最终生成的倾斜三维模型精度的影响,并总结出外业航飞像控点布设方案;利用倾斜实景三维模型进行山区不良地质体识别,建立基于机器学习的地质识别与风险评价系统,构造包含多种不同信息...

Application of Difference GNSS Oblique Photography in Mountain Highway Survey and Design

Using difference GNSS to improve the accuracy of flight POS, the paper makes aerial triangulation image matching and adjustment of images with highly precise POS information, discusses the impact of using different numbers of control point in the same area to participate in adjustment on the accuracy of aerial triangulation and final oblique 3D model and summarizes the layout plan of the control point in field aerial flight. Unfavorable geological body in mountainous areas is identified by using oblique 3D model, and the system of geological body identification and risk assessment based on machine learning is established. Then the comprehensive geological 3D model containing a variety of different information is constructed.