庆阳机场净空区超高障碍物三维分析研究

Three-Dimensional Analysis of Obstacle in the Limited Plane of Qingyang Airport Clearance

以庆阳机场为例,将数字地形分析和三维可视化技术应用到机场净空障碍物分析领域中。首先采用航空数字摄影测量技术获取庆阳机场的数字高程模型,正射影像,及地物矢量数据,然后建立机场实地三维模型和机场净空立体模型,通过两个数字模型的地形比较分析,获得机场净空障碍物数据。最后利用VisualGIS软件在机场数字模型上进行飞机起飞、飞行和降落过程的模拟,直观地表现出机场净空障碍物的分布,及净空障碍物对飞机起飞降落过程的影响。

Airport clearance limit and obstacle location serves as a special one to understand and promote the relation between clearance limits and obstacles. In this the papercase of Qingyang airport, the data terrain analysischaracteristics technology and 3D visualization technology are used to get the obstacles data of airport clearance limit. First, the digital elevation,digital orthoimagery, and the horizontal and vertical positions of obstacle point are obtained by using the aerial photogrammetry method.Then the solid model of airport clearance are built. By using terrain analysis method, the location of obstacle are obtained. At last,and obstacle location are discussed. Data processing by computer,processes and technologies to get the data of obstacle location are also descrihed.the Visual GIS module of ERDAS IMAGINE is used to make the Qingyang airport virtual reality environment, by flying simulation, the user can understand the obstacle of airport clearance visually and vividly.