随着经济的发展、城市的快速扩张,以及交通运输量的日益增长,高速公路路网承载空间日趋饱和。相比新建公路,改扩建项目的建造、占地成本相对较低,是目前解决路网压力的有效方式之一。高速公路改扩建是一项较为复杂的工程项目,在设计施工前,需要对原有公路及两侧一定带宽范围内的地形地貌进行详细勘测。本文基于高速公路改扩建的技术要求,开展车载移动测量和机载LiDAR系统相结合的双系统测量的应用研究。 With the economic development, the rapid expansion of the city, and the increasing traffic volume, the bearing capacity of the expressway network is becoming saturated. Compared with the construction of new roads and reconstruction and expansion projects, the cost of land occupation is relatively low, which is one of the effective ways to solve the pressure on the road network. Reconstruction and expansion of the expressway is a relatively complicated project. Before the design and construction, detailed surveying of the original road and the topography within a certain bandwidth on both sides is required. Based on the technical requirements of expressway reconstruction and expansion, this paper carries out the application of dual system measurement combining on-board mobile measurement and on-board LiDAR system.