Research On Simulation Optimization Method For Trunk Route Path Planning

With the sustainable development of society and the steady progress of science and technology,the air transport industry has entered a golden stage of rapid development,but in general,the structure and service capacity of air traffic still can not meet the needs of sustained and rapid development of air traffic.The trunk route is the backbone of the air route network,which is related to the safety and efficiency of the whole airspace and the air expressway connecting the major airports.The quality of the trunk route directly affects the safety and Antidestructiveness of air traffic,so it is very important to plan the trunk route reasonably.After analyzing the current situation of relevant airspace,this paper optimizes the trunk routes from the macro-path to the planning and micro-intersection adjustment.Firstly,the current domestic trunk routes and related airspace are analyzed,and the TAAM(Total Airspace & Airport Modeller)simulation model is established.At the same time,the practicability,foresight and superiority of different operation modes of trunk routes at home and abroad are compared.It is concluded that one-way cycle is the most realistic method at present.Then,using the existing routes,taking the flow as the weight of the route,using the Dijkstra algorithm to preliminarily plan the trunk route,the initial scheme of the trunk route with some improvement is obtained.Subsequently,on the basis of the preliminary planning scheme,TAAM simulation and ant colony algorithm are combined to optimize the scheme and realize simulation optimization automation.Finally,the intersection complexity model based on radiation surface is studied and compared with the actual operation.Four strategies to reduce the intersection complexity are proposed in micro level.The simulation results show that these strategies have certain improvement effects.Unlike other studies,this paper does not rely on the establishment of mathematical models to plan the trunk route,but uses the idea of simulation optimization,integrates intelligent optimization algorithm and simulation tool TAAM to solve the trunk route planning problem more scientifically.