Analysis of air traffic flow characteristics in airport terminal area based on observed data

This paper studies the time-space characteristics of air traffic flow in airport terminal area, which aims at revealing the inner influence and congestion mechanism of air traffic flow and providing scientific basis for air traffic control strategies. First, the timing distribution of air traffic flow parameters for target air routes is established based on original radar data. Then, according to the fundamental diagrams and air traffic operations as well as control rules, the air traffic states are divided into three phases: free flow, weak intervention and strong intervention. Finally, on the basis of state division, the air traffic velocity-density model, flux-density model and flux-velocity model are proposed by linear regression analysis, and the significance of model fitting and parameters is tested by F and T test. The results demonstrate that the models are corresponding to air traffic flow characteristics and fitting for traffic states identification.