收缩型动态危险天气下改航模型和算法研究

Research on Model and Algorithm of Rerouting under Shrinkage Dynamic Severe Weather

改航飞行是缓解危险天气所导致航班延误的一种重要措施。针对按一定速度收缩危险区,通过设计启发式算法来确定同高度层改航路线。首先对飞机处于改航起始点时的危险区设置初始改航点,考虑飞行中危险区域不断收缩,在第一段动态改航模型中得出中间改航点,进而在第二段动态改航模型中得出最终改航点,让飞机以尽可能短的航程绕过动态危险区,减少延误时间。最后,通过对贵阳到长沙现有航路的仿真分析,验证了模型和算法的合理性。

The flight rerouting is an important measure of relieving flight delays causeded by severe weather, re-routing route at the same level through designing the heuristic algorithm was confirmed, in view of shrinkage severe areas aecording to a certain speed. Firstly, the initial rerouting point was set according to severe areas the time when airplane is flying over the starting point of rerouting, considers severe areas are shrinking continuously during air- plane has been flying, obtains the intermediate rerouting point through the first phase of dynamic model of rerou-ting, and then obtains the finally rerouting point through the second phase of dynamic model of rerouting. The model makes airplane round dynamic severe areas as short as possible, and reduces delay time. Finally, the reasonability of the model was verified and algorithm through the simulation analysis of existing routes from Guiyang to Changsha.