基于SRTM和性能的应急程序路径规划研究

Study on EOSID Path Planning Based on SRTM and Performance

为解决起飞一发失效应急程序(EOSID)在复杂地形机场的路径规划问题,提出了一种基于飞行性能和数字地形的应急程序航迹自动规划方法。首先使用制造商性能软件计算飞机性能参数和直线离场航迹,从跑道头开始,按特定步进长度,在数字地形限制下,搜索满足净航迹越障条件下的可用飞行航迹。搜索中使用了改进采点方式的PRM算法和Dijkstra算法,考虑了坡度对爬升梯度的影响,最后以拉萨机场为例,将搜索确定的最优路径与现有的EOSID路径进行了比较,结果表明:方法所规划的路径是可行的,能够满足性能和地形的要求。

In order to figure out the path planning difficult to designed by man,while engine out standard instrument departure( EOSID) in complex airport. The paper attempt to put forward a method about fullautomatic path planning based on flight performance and digital terrain. Firstly,the performance parameters of the aircraft are produced,including the take-off distance、the net track height and other performance parameters which calculated by performance software,starting from the end of the runway,under the limitation of digital terrain,the search can satisfy the flight path of the net flight path. Combining with the Dijkstra algorithm and the PRM algorithm has improved sampling methods,The effect of slope on climbing gradient is considered. Finally,taking Lhasa airport as an example,carries on the analysis and comparing with the existing EOSID,the simulate results show that the method can fast effective automatic EOSID path planning needs.