Research On Model Of Rerouting In Thunderstorm

Thunderstorms threaten flight safety and affect flight punctuality.The flight can be arranged to bypass the flight limit area.In this paper,the method of the planning flight restriction area under thunderstorm weather is studied,then as a basis for the establishment of the rerouting model under different thunderstorms,Finally,the model is established to solve the problem that the cross point is affected by thunderstorms.First.A model of flight restriction area based on Markov chain is proposed.By directly dealing with the thunderstorm map,the boundary of the thunderstorm is analyzed,Based on the Markov state transition matrix to simulate the motion and change of the thunderstorm,the dynamic flight restriction area is solved,On this basis,the rerouting models under different thunderstorms are established.Second.Block thunderstorms can be divided into two types of single thunderstorms and super single thunderstorms.Aiming at the problem of rerouting under single thunderstorms,a dynamic dangerous weather model is established.In the selected rerouting area,consider the risk coefficient of the overall route,the turning angle in the process of rerouting,and the length of the route,to find the best rerouting point.Aiming at the long duration and large coverage area of the super single thunderstorms,the dynamic multilateral model is established,and taking into account the feasibility and convenience of the rerouting,taking the shortest flight distance and the maximum turning angle as the limiting condition,from the set rerouting points,find the best route.Third.Irregular multi-unit thunderstorms can be divided into two types of bow thunderstorms and scattered thunderstorms For the bow thunderstorms,first set the circle at the vertex of the flight restriction area.Through the aircraft and the circular dynamic tangency,plan a different circumstances of the rerouting path.For the scattered distribution of thunderstorms,firstly,the approaching risk model of aircraft and dangerous weather is established.Based on this,the route and flight time are determined by solving the approaching risk and distance of the aircraft and dangerous weather,and the rerouting model based on safety is established.Fourth.For thunderstorms around the cross route,based on a single aircraft reroutingmodel,to generate the initial diversion route,and then consider the possible flight collision,the route to be modified to determine the new route.