Research On Collision Detection Method Based On Trajectory Prediction

Aviation safety is the core of air traffic management,and aircraft flight conflict detection is an important part of aviation safety.With the development of society,traffic congestion is becoming more and more serious,which seriously restricts the development of transportation industry.Therefore,the air transport industry has been developed rapidly,and we should pay more attention to the aviation safety.Track prediction and flight conflict detection are the guarantee of the safe flight of the aircraft in the flight area.The flight area of the aircraft includes the route area and terminal area.It occupies most of the time in the cruise phase of flight operation.In this process,the aircraft is in the automatic driving state,and the pilots are very easy to distract.Therefore,this paper studies the flight conflict detection in the cruise phase of the route area.Effective flight conflict detection is based on accurate track prediction technology,and accurate track prediction technology is the basic of flight conflict detection.In the aspect of track prediction,the track prediction model based on Grey Theory and the flight intention based track prediction model are analyzed firstly.The ADS-B data are used to simulate the prediction model,and the advantages and disadvantages of the two models are compared and analyzed.Then,according to the simulation results,the model is selected and improved.A track prediction model based on the improved intention is proposed.The improved track prediction model based on fuzzy logic has higher matching degree and higher prediction accuracy in the turning stage.In order to improve the efficiency of flight conflict detection,a new algorithm based on convex bounding box is proposed to detect the flight conflict.Firstly,according to the current real-time position information of the aircraft with broadcast type automatic correlation monitoring data,the improved interactive multi model filtering algorithm is used to predict the next stage track.Then,according to the characteristics of the aircraft flight protection zone,it is regarded as the convex enclosure of the current aircraft.The collision detection algorithm of convex bounding box is used to judge whether there is conflict between the two aircraft.Finally,different flight conflict scenarios are constructed to free the detected flight conflicts by adjusting speed,adjusting direction or adjusting height.The experimental results show that the proposed method can detect the flight conflict quickly and accurately.