| The movement area of airport is the important place where aircrafts ground operationsand special vehicles service occurs. With the expansion of the scale of civilian airportoperations, airport configuration has become complex increasingly. In order to prevent theaircrafts, aircraft and ground vehicles, aircraft and obstacles from collision at any density,visibility and complex conditions, we should firstly implement effective surveillance onnon-cooperation and collaboration targets in movement area of airport, and further developfour basic functions: surveillance, control, route planning, and guidance based on the currentCNS technology. The essence of the anti-collision route planning is to seek the anti-collisionpath distribution solutions automatically based on the full consideration of the airportoperation limits and the dynamic position changes, by which to guarantee the safety of theaircraft and the efficient operation. The key technology includes the taxi conflict detecting,conflict resolution and route planning. This paper does some research on the taxi networkmodeling method, the algorithm of conflict detecting and resolution, and the algorithm ofstatic and dynamic route planning.The main research work of the dissertation includes the following several respect:1. The modeling methods of taxiway network based on topological model and Petri nets.Add attribute information while converting graphic data into vector data based on the formervector diagram. Define the standards and methods in topology modeling. Use Petri nets toanalysis transportation in the movement area of airport. Establish the constraints to avoid theoccurrence of collision in the movement area fully considering the rules of air traffic controland road traffic safety management in movement area of airport.2. The conflict detecting methods during taxiing in the movement area of airport.Analyze the standard safe interval, define the different collision types, and build the conflictdetecting model based on the taxiing time constraints. This paper has pioneered the model ofconflict detection based on the minimum lateral interval based on equivalent taxi route.3. The static and dynamic anti-collision route planning model in the movement area ofairport. This part, targeting at distributing the optimal route for each aircraft in the initial state,is directed to the analysis of the restricting factors and the establishment of a mathematicmodel. Then we built the dynamic route planning model to distribute the anti-collision routefor the aircraft getting into the taxi network in real time. The dynamic anti-collision routingplanning model can be built by comparing the costεwandεcof two schemes. 4. The feasibility and practicability of the method are validated by design examplesbased on the presented models.The research of this paper can provide theoretical support for SMGCS and theresearching on the intelligent assistant decision-making system for the tower. |
