Analysis and Research on Air Operation Efficiency of Trunk Routes Based on Radar Data
Air route network is the carrier of civil aviation operation and passenger and cargo transportation.Whether its layout is reasonable and convenient directly affects operational efficiency of civil aviation flights in the air.As one of the technical performance characteristics of airspace structure,the non-linear coefficient is the main indicator for evaluating the convenience and operational efficiency of air route network.This paper extracts the flight trajectories of China's trunk routes from aerial surveillance track data and calculates the non-linear coefficients of the routes respectively.The results of this study indicate that the high non-linear coefficients of some of the trunk routes are due to the fact that some of these flights choose to take the long way instead of the short way;for more than half of the trunk routes in this study,the non-linear coefficients vary with flight seasons;the non-Linear coefficients of outbound and return routes are also different.