一种基于图论的机场空域无人机流量控制方法

城市物流无人机机场需具有同时起降多架无人机的能力，针对中小型垂直起降无人机设计了一种单入口单出口、航路交叉、多停机坪的机场模型，提出了一种基于图论的飞行安全优先的流量控制方法。根据机场内无人机飞行状态，控制无人机进离场时间，规划出机场内飞行航路，保证无人机飞行安全。仿真结果表明:该流量控制方法可以确保无人机在机场空域内安全有序飞行；分别测试了面积不同的机场进场与进离场运行容量，在单个停机坪面积一定时，停机坪数量越多进场容量越大，但进离场容量反而越小；因此在设计机场时，在给定的机场面积情况下，需要合理规划停机坪数量。 

Flow control method for UAV airport airspace based on graph theory

The logistics drone airport in the city needs the ability to take off and land multiple UAVs at the same time. An airport model with single inlet and single exit, route crossing and multiple aprons is designed for small and medium sized vertical takeoff and landing UAVs, and a flow control method based on graph theory to ensure flight safety is proposed. According to the flight status of drones in the field, arrival and departure time of drones are controlled, and flight routes within the airport are planned to ensure the flight safety of drones. The simulation results show that the flow control method can ensure safe and orderly flight of UAVs in the airport airspace. Arrival and departure operating capacity of airports with different sizes were tested separately. When the area of a single apron is fixed, the greater the number of aprons the larger the arrival capacity, but the smaller the arrival and departure capacity. Therefore, when designing an airport, it is necessary to properly plan the number of tarmac in a given airport area.