Application of Light and Small UAV in Large Scale Topographic Map Surveying and Mapping in Central City
With the continuous development of spatial information technology,the application of light and small unmanned aerial vehicle in large scale topographic mapping is becoming more and more widespread. In view of the limitations of the production of large-scale topo-graphic maps by traditional surveying and mapping means,takes the 1:500 scale topographic map survey project in the central city as the ob-ject,studies the operation process of the production of large-scale topographic maps based on light and small unmanned aerial vehicles,carries out research from the layout and measurement of image control points,image data acquisition and data processing,and builds a three-dimen-sional real scene model of the scene. The 3D model was imported into the EPS 3D mapping platform for ground object collection,supplemen-ted by field adjustment and supplementary measurement data,the production of large-scale topographic map was completed. Finally,the field data was collected to analyze the accuracy of the results from the plane,elevation and distance,and the quality of the results met the require-ments of the specification after accuracy assessment. The research results show that light and small UAV can meet the surveying and mapping requirements of 1:500 scale topographic map in central urban areas,improve the surveying and mapping efficiency,and reduce production costs.
light and small UAVcentral citytilt photogrammetrylarge scale topographic map
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