Research on flight conflict prediction method for non-cooperative large unmanned aerial vehicles

In order to reduce risk of collision between non ̄cooperative large UAVsꎬ firstlyꎬ in light of analysis on their operation modeꎬ predication mechanism and procedure of flight conflict based on UAVs operation and management platform were proposed. Secondlyꎬ a conflict prediction model building on UAVs flight state data was proposedꎬ which predicted conflicts in both horizontal and vertical directions and determined whether there would be a conflict. And then warning threshold was analyzed to prevent too late reception of alarm information by UAVs ground station. Finallyꎬ real ̄time flight status data of 3 UAVs were used to analyze and verify the model. The results show that the proposed mechanism and program can realize prediction and early warning between non ̄cooperative large UAVsꎬ and the prediction model can accurately determine whether there is a flight conflict as well as calculate when it will happen.