Research on Updating Mode of Large-scale Topographic Map Based on Multi-source Data
In order to solve many practical problems existing in the traditional topographic map revision and updating mode, such as low efficiency and difficult data acquisition, under the background of high data integration of geographic information industry, ad-vanced mapping technologies such as low altitude remote sensing, airborne LiDAR and mobile vehicle laser measurement are compre-hensively applied to carry out large-scale topographic map revision and updating. The efficiency of data acquisition and data process-ing is greatly improved compared with the traditional topographic map revision and updating mode. The mapping work is moved from "field" to "indoor", and the three-dimensional topographic map drawing environment is constructed by integrating a variety of data acquisition means. The design of a variety of data fusion topographic map updating mode is applied to a specific project. The test re-sults show that the accuracy of topographic map drawing in this operation mode meets the specification requirements. The operation mode of large-scale topographic map revision and updating designed in this paper can provide reference for the popularization and ap-plication of advanced surveying and mapping technology.
万方数据
维普
