To accurately monitor the surface operation conflict of airport flight area,a method for identifying the conflict hotspots in the flight area under the dynamic safety separation was proposed.Firstly,taking two activity targets of aircraft and vehicle as the research objects,a safety area model with the characteristics of hermetic space and time-varying range was es-tablished according to the real-time movement speed of the targets,so as to maintain the dynamic safety separation between the targets in real-time.Secondly,the conflict identification was carried out comprehensively from three aspects:target separa-tion,movement direction,and movement speed,and a conflict network was established to represent the conflict relationship and delineate the surface conflict areas.Six indexes were selected to evaluate the network nodes,then the quadratic improved entropy weight method was used to calculate the entropy weight of the area,and the conflict hotspots were identified according to the proportion of conflicts.Finally,taking a large hub airport as an example,four methods were compared and analyzed to identify three hotspot areas with different conflict degrees.Among them,the average relative error value of entropy weight of the area was calculated by using the quadratic improved entropy weight method,which decreased by 66.5％and 53.7％re-spectively compared to the traditional entropy weight method and the primary improved entropy weight method.The results show that the hermetic safety area can make the targets maintain dynamic safety separation,which is the basis for accurately identifying the conflict.The quadratic improved entropy weight method can objectively and accurately identify the conflict hotspots,timely monitor the surface conflict,and ensure the operation safety of the airport flight area.The research results can provide a new method for accurately monitoring the surface operation conflicts of the airport flight area,thus ensuring the oper-ation of airport flight area.
维普
万方数据