Aircraft Conflict Detection and Resolution Using Mixed Geometric And Collision Cone Approaches
Jennifer D. Goss, Rahul Rajvanshi, Kamesh Subbarao · AIAA Guidance, Navigation, and Control Conference and Exhibit · 2004
This paper considers the problem of avoidance of conflict or collision between two aircraft in a 3-D environment utilizing current positions and velocities using a mixed geometric and collision cone approach. Analytical results are obtained for certain special cases and numerical optimization techniques are used to search for solutions to the most general cases. The results are optimal as they tend to minimize the velocity vector changes and thus result in minimum deviations from nominal trajectory so as to avoid conflict. It is assumed that the aircraft is able to change its velocity, heading and elevation angles independently and all combinations of these three degrees of freedom are investigated for obtaining the resolution strategies. The simulation results also include explicit bounds on the airspeeds (lower and upper limits) and turning rates to enforce realistic scenarios.