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摘要: 对军用机场净空规格进行了分析, 建立了单跑道和平行双跑道机场净空区障碍物限制面的数学模型。在此数学模型的基础上, 使用ArcGIS系列软件建立平行双跑道机场净空限制面三角网高程模型, 并进行三维显示, 将数字高程模型与平行双跑道机场地形图相叠加, 对军用平行双跑道机场净空障碍物进行了评定。分析结果表明: 障碍物O1、O2、O3三点的实际高程分别为76、248、413 m, 净空限制面高度分别为60、245、380 m, 三点分别超高16、3、33 m。该评定方法可快速、准确地进行军用平行双跑道机场净空障碍物评定, 提高了评定效率。Abstract: Military airfield clearance specification was analyzed, the mathematical models of obstacle limit surfaces for single runway and parallel double-runway airfield clearances were built. Based on the models, the triangle mesh elevation model of parallel double-runway airfield clearance was built by using ArcGIS, and the 3D display result was got. Parallel double-runway airfield clearance obstacles were evaluated by superimposing digital elevation model (DEM) with corresponding topographic maps. Analysis result indicates that the actual elevations of obstacles O1, O2, O3 are respectively 76, 248, 413 m, the heights of clearance limit surfaces are respectively 60, 245, 380 m, and the exceeding heights are respectively 16, 3, 33 m. So the obstacles of parallel double-runway airfield clearance are evaluated by using the method quickly and exactly, and evaluation efficiency improves greatly.
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Key words:
- parallel double-runway /
- military airfield /
- clearance /
- DEM /
- 3D visualization /
- GIS
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图 4 平行双跑道机场净空限制面平面
Figure 4. Plan of parallel double-runway airfield clearance limit surface
图 7 机场净空区障碍物限制面与相应地形
Figure 7. Airfield clearance obstacle limit surfaces and relevant topographic map
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