Research Of Conflict Monitoring And Resolution Based On Real-time Trajectory

In recent years, with the rapid development of civil aviation, air traffic flow is increasingdramatically, the airspace is quite crowded, flight conflicts is becoming more and more serious.Considering the uncertain factors in the process of actual flight and the occurence of emergency, it isnecessary to monitor the real-time flight condition in airspaceautomaticlly.This paper is aimed at a series of studies as short-timetrajectory prediction, dynamic monitoringof conflict and deconflict policy. First, the short-timetrajectory prediction problem is studied, thetheory of parameter identification is introduced, calibrated airspeed is identified with maximumlikelihood criterion and Newton-Ralph monson iterative algorithm.Aircraft short-time4Dtrajectoryiscalculated with isometric track forecast model, and this method is provedwith apractical casestudy.Secondly, a control method based on hybrid system theory is put forward. Mixed air trafficsystem control model is established, and the flight conflicts observer is constructed. According to theregulation rules, aircraft continuous position information is converted to the corresponding discreteconflict.Flight conflict discrete controller was designed,according to different conflict of discretevectors, corresponding discrete resolutions scheme arecomputed. Finally, problem about conflictresolution of two aircraftsbased on fixed route is discussed. Deconfict strategies are studied withlinear programming method based on change the heading angle orthe flight speed is studied, and thefeasibility of the method is verified by a practical case. Considering some uncertain factors in theprocess of operation, the theory of receding horizon controlis introduced, it is based on the short-timetrajectory prediction, flight paths are constantly updated, and the resolution policies are rollingoptimizedon this basis.