The Research On Airport Centrality Measurement Method Considering Air Transport Resources Under Spatio-temporal Network

With the rapid improvement of China's economy,China's aviation industry is also in a stage of rapid development,and the air transportation network is gradually improving.The airport is a quite important part of the air transport organization network.Accurately portraying its position in the aviation network is of great important research significance for the construction of the air transport network and the development of the airport.The centrality in complex networks plays a fundamental role in characterizing the spatial structure of airports.This paper constructs a discrete spatiotemporal network of airport nodes,and divides the time of one week into multiple time periods.Based on the spatio-temporal network,the degree centrality,clossness centrality and betweenness centrality in the network analysis method are introduced to discuss the airport nodes to discuss the temporal evolution characteristics of the centrality of airport nodes in China under different time periods.When calculating these three kinds of centrality,the central calculation formulas are taken into account the air transportation resources such as flight time,delay rate and number of seats in the flight of the airport node to more accurately and reasonably characterize the position of the airport node in China's aviation network.This paper analyzes the correlation between the calculated three centrality results and passenger throughput to explore the degree of linear fit of the centrality calculation results considering air transport resources and the passenger throughput of the corresponding airport nodes.The study shows that flight time,delay rate and the number of seats in the aircraft have good measurement results for these three centralities.The degree centrality and passenger throughput show the best consistency considering the number of seats in the aircraft.The closeness centrality and passenger throughput show the best consistency considering the flight time of the flight,the delay rate and the number of seats in the aircraft.The betweenness centrality and passenger throughput show the best consistency considering the flight delay rate and the number of seats in the aircraft.Based on the comprehensive measurement method of three types of network centrality,this paper proposes a systematic centrality analysis method with exploratory significance.The research result reflects the hierarchical structure of China's airport system,and shows a positive coupling with the classification of the airport system in the National Civil Airports Layout.At the same time,the comprehensive centrality of China's airport network airport is characterized by higher characteristics in some areas of the central and eastern coastal areas.The centrality of nodes in the eastern part of China is obviously better than that of the west.The central value of the nodes in the network is gradually decreasing within one day,and the airport is decreasing.The number of nodes is first increased and then decreased.Compared with non-working days,the airport has a larger central value in the morning of non-working days,and the value is smaller in the evening,while the tourist city airports such as Dalian and Xi'an show a stronger position on non-working days,which is related to the changing characteristics of people's travel demand.