Air traffic risk hotspot identification method, key aircraft identification method and system

The invention discloses an air traffic risk hotspot identification method, a key aircraft identification method and a key aircraft identification system, an air traffic risk situation network is constructed based on the instantaneous conflict probability of aircrafts, and the safety state of air traffic in a monitoring sector can be visually reflected. An air traffic risk situation network is analyzed based on a complex network theory, an air traffic risk hot spot area in a monitoring sector can be rapidly identified by adopting a network cluster mining method, the method is simple and rapid, the safety regulation and control load of air traffic control personnel can be effectively relieved, and the safety of the air traffic control personnel is improved. Technical support is provided for safe, efficient and intelligent operation of air traffic; meanwhile, the maximum-scale risk hot spot area is determined based on the number of the aircrafts, key aircrafts needing to be concerned are recognized based on the