基于DSM视域分析的机场新建塔台遮蔽角测量方法

Measurement Method of Shelter Angle of New-built Airport TowersBased on DSM Viewshed Analysis

遮蔽角测量是保障机场塔台相关设备安全稳定运行、辅助机场新建塔台选址的重要手段。常规的遮蔽角测量方法主要有实测法和DEM分析法,但常规方法存在观测条件苛刻、数据处理烦琐、成果精度受限等不足之处。本文提出了一种基于DSM视域分析的遮蔽角测量方法,并以广东省某机场新建塔台地形地物遮蔽角测量工程为例进行验证,结果表明该方法的计算精度和实施效率均有了极大的提高,并具备较强的可复制性和推广性。

Shelter angle measurement is an important means to ensure the safe and stable operation of airport tower related equipment and assist the site selection of new-built airport towers.The conventional shelter angle measurement methods mainly include the actual measurement method and the DEM analysis method,but the conventional method has the shortcomings of harsh observation conditions,cumbersome data processing,and limited accuracy of the results.In this paper,a shelter angle measurement method based on DSM viewshed analysis is proposed,and the terrain shelter angle measurement project of a new-built tower in Guangdong province is used as an example to verify the proposed method,and the results show that the calculation accuracy and implementation efficiency of the proposed method have been greatly improved,and it has strong reproducibility and generalization.