Aerodrome Site Selection in Complex Terrain Area Based on Domestic High-Resolution Stereo Mapping Satellite

The basic geographic data of aerodrome site selection in China mostly comes from traditional surveying data or public topographic data. There are several problems for conventional site selection such as old surveying data, low accuracy of terrain data and high cost of remapping in complex topographic areas, etc. In addition, aerodrome site selection results are heavily depending on past experience, the actual construction cost of aerodrome project always exceeds the budget, especially for aerodrome construction with enormous excavation and fill. With the successful launch of China's high resolution stereo mapping satellite GF-7, the aerodrome site selection in complex terrain areas is provided with higher precision data support. Effective geological, geomorphology, three-dimensional terrain and other accurate data can be acquired, helping aerodrome site selection work to upgrade from the experiential to digital. This paper discusses the feasibility and specific process of the application of high-precision three-dimensional mapping satellite in site selection of aerodromes with complex terrain conditions, and takes actual data as an example to carry out the processing and 3D modeling with domestic high-precision stereo mapping satellite data. Comparative analysis and evaluation of the elevation accuracy with the actual ground observation data are worked out. It is proved that domestic high-resolution stereo mapping satellite can provide effective technical support for site selection.