基于World Wind的机场障碍物评估
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摘要
考虑到机场周围障碍物对飞行安全的影响,文章提出一种基于World Wind的障碍物评估方法。该方法根据机场环境和飞行程序设计要求建立OAS面数学模型,对给定的数据进行分析计算;对World Wind进行二次开发,实现障碍物与OAS面关系的三维可视化,结合客观数据分析和三维仿真结果给出评估报告;并分析障碍物对导航信号遮蔽影响,完成对障碍物的进一步评估。通过对天津机场障碍物验证分析表明,该方法对障碍物评估计算结果与ICAO使用的专业软件结果一致,并且更便捷直观,同时通过研究障碍物对某DME台信号的遮挡影响,结果证明能够准确地计算DME信号近距有效覆盖范围。
Considering the effect of obstacles on flight safety,a method of obstacles assessment based on World Wind(WW)was proposed in the paper.Firstly,according to the requirements of the airport environment and flight procedure design,the mathematical model of the Obstacle Assessment Surface(OAS)was established,and the given obstacle data was analyzed and calculated.Secondly,by developing the secondary development functions of WW,the three-dimensional visualization of the relationship between obstacles and the OAS was presented,combining with objective data analysis and three-dimensional simulation results,an assessment report was given.Finally,the effect of obstacles shielding on specified navigation station signal coverage was analyzed,and assessing to obstacles was finished further.Taking the airport of Tianjin as a case study,it was proved that the results of obstacles evaluation were consistent with the results of ICAO professional software,but were more convenient and intuitive.Moreover,through researching the influence of obstacles on DME station signal,the effective coverage could be given accurately.
Considering the effect of obstacles on flight safety,a method of obstacles assessment based on World Wind(WW)was proposed in the paper.Firstly,according to the requirements of the airport environment and flight procedure design,the mathematical model of the Obstacle Assessment Surface(OAS)was established,and the given obstacle data was analyzed and calculated.Secondly,by developing the secondary development functions of WW,the three-dimensional visualization of the relationship between obstacles and the OAS was presented,combining with objective data analysis and three-dimensional simulation results,an assessment report was given.Finally,the effect of obstacles shielding on specified navigation station signal coverage was analyzed,and assessing to obstacles was finished further.Taking the airport of Tianjin as a case study,it was proved that the results of obstacles evaluation were consistent with the results of ICAO professional software,but were more convenient and intuitive.Moreover,through researching the influence of obstacles on DME station signal,the effective coverage could be given accurately.
引文
[1]ICAO.Annex 14,Aerodrome Design and Operations[S].ICAO,2004.
[2]IDS Inc.Flight Procedure Design&Airspace Management,FPDAM[EB/OL].(2012-06-12).http://www.idscorporation.com/airnavigation/our-solutions-products/airport-terrain-obstacle-management/description.
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[13]柴贵海,廖邦洪,胡庭兴.基于SketchUp和ArcGIS对虚拟校园的设计与实现[J].测绘科学,2009,34(06):270-272.
[2]IDS Inc.Flight Procedure Design&Airspace Management,FPDAM[EB/OL].(2012-06-12).http://www.idscorporation.com/airnavigation/our-solutions-products/airport-terrain-obstacle-management/description.
[3]郭宽伟,岑国平,马文轩.机场净空GIS快速评定方法研究[J].测绘科学,2012,37(01):26-27.
[4]许有臣,朱衍波,张军,等.飞行程序辅助设计装置:中国,200910085827.6[P].2009-11-25.
[5]麻士东,何运成,常芙蓉,等.基于性能的导航飞行程序自动化管理仿真研究[J].计算机仿真,2012,29(08):40-41.
[6]蔡喜琴,苗天宝,曹建君,等.庆阳机场净空区超高障碍物三维分析研究[J].遥感技术与应用,2004,19(05):406-409.
[7]张尚弘,易雨君.World Wind在汶川地震应急系统中的应用研究[J].系统仿真学报,2010,22(05):1296-1299.
[8]卢海滨,郑文锋,银正彤,等.NASA World Wind Java SDK数字地球客户端开发[J].测绘科学,2009,34(03):169-170.
[9]朱代武,何光勤.目视和仪表飞行程序设计[M].成都:西南交通大学出版社,2004:98-139.
[10]周继华.基于性能导航的陆基导航信号覆盖范围评估[D].天津:中国民用航空飞行学院,2012:07-13.
[11]汪玥,苏志刚,高益寰,等.二次监视雷达覆盖性能分析[J].信号处理,2009,25(8A):607-610.
[12]庞秋媛,倪玉德.双锥共线阵天线辐射特性[J].现代雷达,2012,34(08):60-62.
[13]柴贵海,廖邦洪,胡庭兴.基于SketchUp和ArcGIS对虚拟校园的设计与实现[J].测绘科学,2009,34(06):270-272.
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