航班改航飞行是在空域受危险天气及飞行冲突影响时的一种重要策略。针对初始改航航迹的生成,提出了改进的几何圆切法,用其规划出临时航线,绕过危险区。为避免潜在的飞行冲突,应用几何线性规划法进行了改航策略修正。最后,通过对我国现有航路的仿真分析,表明了算法的有效性。 Flight diversion Flight is an important strategy when airspace is affected by dangerous weather and flight conflicts. In view of the generation of the initial navigation track, an improved geometric circular cut method is proposed, which is used to plan a temporary navigation route and bypass the danger zone. In order to avoid the potential flight conflict, the paper modified the strategy of changing navigation strategy by using the method of geometric linear programming. Finally, the simulation analysis of the existing routes in our country shows that the algorithm is effective.