基于GIS的直升机山区救援飞行路径规划
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摘要
为缩短直升机救援飞行时间,保障救援飞行安全,采用Voronoi图方法进行基于地理信息系统(GIS)的山区直升机救援飞行路径规划研究。引入阻碍因子参数,探讨在救援直升机路径选择中山区段距离和总飞行距离的权重问题,开发出角度圆滑工具用于修正最优路径转弯等规划轨迹,先形成平面初始航迹,再结合直升机飞行性能进行高度修正得到救援飞行路径的三维航迹规划。结果表明:路径一定时,阻碍因子和山区段权重线性相关;用该方法所得的三维航迹山区段距离短,能够缩短救援飞行时间。
Based on GIS and Voronoi,a method for helicopter rescue flight path planning in mountainous area was worked out in order to ensure the safety of helicopter rescue and shorten the rescue flight time.Blocking factor was introduced to analyze the weights allocation of flight distance in mountainous area and the total flight distance during the rescue helicopter path selection.The angle sleek tool is developed to fix the path planning including turning on an optimal path.The amended path is used to figure out a two-dimensional track,and the flight height was also amended according to helicopter flight performance.As a result,this two-dimensional track is converted into three-dimensional track.The results show that: when the path is fixed,the relationship between blocking factor and the weights of flight range in mountain area is linear correlation.The flight distance for the mountains part presented by three-dimensional track was shorted and the rescue flight time could be shortened in an effective way.
Based on GIS and Voronoi,a method for helicopter rescue flight path planning in mountainous area was worked out in order to ensure the safety of helicopter rescue and shorten the rescue flight time.Blocking factor was introduced to analyze the weights allocation of flight distance in mountainous area and the total flight distance during the rescue helicopter path selection.The angle sleek tool is developed to fix the path planning including turning on an optimal path.The amended path is used to figure out a two-dimensional track,and the flight height was also amended according to helicopter flight performance.As a result,this two-dimensional track is converted into three-dimensional track.The results show that: when the path is fixed,the relationship between blocking factor and the weights of flight range in mountain area is linear correlation.The flight distance for the mountains part presented by three-dimensional track was shorted and the rescue flight time could be shortened in an effective way.
引文
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[4]罗真富,蒲达成,谢洪斌,等.基于GIS和信息量法的泥石流流域滑坡危险性评价[J].中国安全科学学报,2011,21(11):144-150.LUO Zhen-fu,PU Da-cheng,XIE Hong-bin,et al.Lanslide hazard evaluation in debris flow catchment area based on GISand information method[J].China Safety Science Journal,2011,21(11):144-150.
[5]蒋蓉,邱建,邓瑞.汶川地震前成都市避难场所应急能力评估[J].中国安全科学学报,2011,21(10):170-176.JIANG Rong,QIU Jian,DENG Rui.Emergency capacity assessment of earthquake shelters in Chengdu city before Wen-chuan earthquake[J].China Safety Science Journal,2011,21(10):170-176.
[6]迟文学,孙刚,武峥.基于GIS民航应急救援与辅助决策支持系统研究[J].交通与计算机,2005(6):46-49.CHI Wen-xue,SUN Gang,WU Zheng.Emergency rescue and decision-making support system of civil aviation based onGIS[J].Computer and Communications,2005(6):46-49.
[7]苏康,刘经南,闫利.基于GIS的无人飞行器路径规划[J].武汉大学学报:信息科学版,2003,28(2):188-190.SU Kang,LIU Jing-nan,YAN Li.GIS-based unmanned air vehicle path planning[J].Journal of Wuhan University:Infor-mation Science,2003,28(2):188-190.
[8]陈通.救援直升机航迹规划研究[D].广汉:中国民用航空飞行学院,2011.CHEN Tong.Research on Rescue Helicopter Route Planning[D].Guanghan:Civil Aviation Flight University ofChina,2011.
[9]陈军.Voronoi动态空间数据模型[M].北京:测绘出版社,2002:46-47.CHEN Jun.Voronoi Dynamic Spatial Data Model[M].Beijing:Surveying and Mapping Press,2002:46-47.
[10]吴秀芹,张洪岩.ArcGIS9地理信息系统应用与实践(下册)[M].北京:清华大学出版社,2007:604-605.WU Xiu-qin,ZHANG Hong-yan.Application and Practice of ArcGIS9 Geographic Information System(II)[M].Beijing:Tsinghua University Press,2007:604-605.
[11]刘彦花,叶国华.矢量曲线抽稀算法分析[J].城市勘测,2001,6(4):1-4.LIU Yan-hua,YE Guo-hua.The generalization algorithm analysis of vector curve[J].Urban Geotechnical Investigation&Surveying,2001,6(4):1-4.
[12]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,2004:7-8.ZHU Dai-wu,HE Guang-qin.Visual and Instrument Flight Procedure Design[M].Chengdu:Southwest JiaotongUniversity Press,2004:7-8.
[13]犹轶.浅谈直升机野外起降方法[J].中国民航飞行学院学报,2009,20(4):44-45.YOU Yi.Elementary introduction to methods for helicopter field taking off and landing[J].Journal of Civil Aviation FlightUniversity of China,2009,20(4):44-45.
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