基于GIS的复杂地形下直升机救援飞行路径优化
[Abstract]:With the frequent occurrence of disasters and accidents in recent years, the more people focus on disaster relief work. It is not difficult to find that general aviation has played an irreplaceable role in emergency rescue. Compared with other emergency rescue methods, the helicopter based general aviation rescue flight has the advantages of fast, efficient and less limited by geographical space. It is the most effective and widely used emergency means in the world. The construction of China's aviation rescue system is developing rapidly under the impetus of all parties. The capability of aviation emergency rescue not only does not adapt to the situation of frequent disasters, but also to the level of social and economic development. With the gradual opening of low-altitude airspace in our country, the market potential of civilian helicopters in the future is huge. Therefore, the development of general aviation, the establishment of aviation emergency rescue system, and the optimization of helicopter rescue methods are promoted. Enhance aviation rescue and emergency services support capacity has been urgent. As the necessary information of general aviation flight, visual chart is the safety guarantee of helicopter flight. This paper plans to digitize visual chart, develop visual map symbol system to meet general aviation flight demand, realize computer aided drawing of helicopter emergency rescue visual chart based on spatial information technology, and directly read navigation elements. It is convenient to analyze the terrain of the rescue destination and choose the best flight path. In order to keep pace with the world, CAAC will transition from BJ54 coordinate system to WGS84 coordinate system stipulated by ICAO in the next few years. In this paper, using GPS (Global Positioning system, Global PositioningSystem) measured WGS84 coordinates and published BJ54 coordinates of this point, the transformation parameters are calculated by using the seven parameter method of Bursa, and then applied to GIS (Geographic Information system, Geographic Information System) software. Transform the coordinate system. Because helicopters are often used in emergency rescue, the location of the flight destination, terrain and meteorological conditions are all random, and the mission is unexpected, so they fly in the typical complex terrain area, which is represented by hilly and mountainous areas. The helicopter's flight path is limited by terrain and weather conditions. For regions with complex terrain conditions, helicopter performance must be considered to optimize the flight path. In order to ensure the flight safety of the helicopter in the area of complex terrain, this paper uses space information science and technology, according to the typical model of complex terrain, combined with the flight performance of the designated helicopter model. The optimal path algorithm and GIS implementation for helicopter emergency rescue under different objective functions are studied.
【学位授予单位】:中国民用航空飞行学院
【学位级别】:硕士
【学位授予年份】:2013
【分类号】:V275.1;V328;TP391.72
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