Due to the inaccurate flight path prediction of traditional methods, the ability of aircraft route conflict resolution is poor. Through the four-dimensional track operation, the accurate track prediction algorithm is proposed, and then the constraints of track operation are set. According to the aircraft wake interval standard, the aircraft interval points and protection areas are established. The centralized method is used to optimize the aircraft track path, and the aircraft conflict resolution method based on the four-dimensional track operation is completed. In the experiment, conflict flight routes are set for five aircraft in the form of simulation. The results show that the method in this paper can effectively resolve the route conflict for five aircraft, while the traditional probability graph method has multiple route conflicts. It is concluded that the method in this paper has better conflict resolution ability for multiple aircraft routes than the traditional method.
The proposal of the free flight mode has brought tremendous pressure to air traffic safety and put forward higher requirements on the technology of flight conflict resolution. The traditional velocity obstacle model is dedicated to solving potential flight conflicts on air routes. Therefore, this paper puts forward a three-dimensional heading release algorithm based on the ORCA. Based on the ellipsoidal flight protection area, we select the current position, velocity vector and heading of the aircraft as the feature variables. Firstly, qualitatively judge the conflict state, and then perform geometric derivation based on the speed obstacle method, and establish a conflict resolution model based on the minimum heading. The simulation results show that, without considering other conditions, this algorithm can effectively detect and resolve potential flight conflicts between two aircraft in three-dimensional space by adjusting the course.
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