airway networks are the basic carriers of air *** airway networks will significantly improve the operating efficiency of *** study is targeted at the airway network composed of 1479 waypoints in 2018 of *** with spati...
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airway networks are the basic carriers of air *** airway networks will significantly improve the operating efficiency of *** study is targeted at the airway network composed of 1479 waypoints in 2018 of *** with spatial structures,traffic flow characteristics,and the dominating traffic flow,four airway network models are constructed from the perspective of complex networks,including physical airway network,airway traffic network,directed airway traffic network,and dominance-based directed airway traffic *** the topological characteristics of different networks are statistically analyzed by using typical network measure indices,and the differences of these indices among different networks are ***,composite indices are *** results show that the airway network under the influence of traffic flows exhibits richer heterogeneity and asymmetrical between-node relationship,and the distributions of indices among different networks are significantly *** analysis of composite indices and traffic flows show that some waypoints yield great results in multiple composite indices and traffic volumes;some waypoints display large results in multiple composite indices but low traffic flows,and other waypoints only perform well in certain composite *** importance levels of waypoints are divided,by the K-means method based on degree composite index,betweenness composite index and closeness composite index,into three levels,and the reasonableness of clustering results is validated by the statistical results of traffic flows,airport number,and flight delay.
Low-altitude wind shear has become a serious factor impacting for taking off and landing, which has characteristics like sudden appearance, short duration, small scale and high intensity. So, the actively research for...
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