Research On City Hierarchy System Based On Code Sharing Aviation Network

Aviation network is an important resource.Different airlines use code sharing and cooperation to expand the route map,thereby reaping more economic benefits.At the same time,the connection between cities has become closer through code sharing.Therefore,the research on the code-sharing aviation network is of great significance to promote the construction of code-sharing aviation.After sorting out the relevant literature,this article constructs an aviation network based on the code-sharing airline data in 2019.First,it measures the topological characteristics of the code-sharing aviation network,and then analyzes the centrality of the general aviation city nodes.The analysis results show that the Chinese code the shared aviation network is a small-world network,which means that there is interaction between cities that are adjacent to each other,and there is also a certain possibility of interaction between non-neighboring cities.The degree distribution obeys a two-stage power-law distribution,that is,to a certain extent,the interaction between cities will be affected by geographical restrictions.When the impact of this limitation is weakened,cities will tend to connect with "more popular" nodes;after analyzing the node cities in the code-sharing aviation network,it is found that the development differences between different cities make them three types of centers.There are differences in sexual functions.In some cities,the three central functions are relatively strong,indicating that they have an important pivotal role in the code-sharing aviation network.Next,this article analyzes the hierarchical structure and distribution pattern of China's urban system from the perspective of code-sharing aviation.Through the method of charting and clustering analysis,The 146 navigable cities in the code-sharing aviation network are divided into four levels,and the characteristics and distribution pattern of the hierarchical structure of China's urban system are revealed from the perspective of the code-sharing aviation network.Higher,the fewer cities correspond.In addition,factors such as administration,economy,and tourism resources also strongly affect the level of the city;and the distribution of the city system also has obvious differences between east and west.High-level cities are mainly distributed in the eastern region,and the routes are relatively dense,the direction of air connections in the western region is mostly toward the east;the national central cities and regional central cities together constitute the basic framework of China's code-sharing aviation network.Compared with the ordinary aviation network,the code-sharing aviation network has expanded the route map,improved the layout of the aviation network,and made the connection between cities closer.Compared with the research results of the general aviation network,it is found that they are in the urban system structure and the distribution shows that the results are generally similar.