Conflict resolution, namely avoidance of aircraft crushes, is one of the main problems to be solved in a free flight based air traffic system. The researches on conflict resolution are mainly performed in simulative environments. In the work presented here, a simple lateral director autopilot is designed for conflict resolution studies. Using such a simple autopilot, real aircraft dynamics can ...

This thesis considers the problem of intersecting aircraft flows under decentralized conflict avoidance rules. Using an Eulerian standpoint (aircraft flow through a fixed control volume), new air traffic control models and scenarios are defined that enable the study of long-term airspace stability problems. Considering a class of two intersecting aircraft flows, it is shown that airspace stabil...

In air traffic management, a pairwise conflict is a predicted loss of separation between two aircraft, referred to as the ownship and the intruder. A conflict prevention bands system displays ranges of maneuvers for the ownship that characterize regions in the airspace that are either conflict-free or “don’t go” zones that the ownship has to avoid. Errors in the calculation of prevention bands ...

In air traffic management, a pairwise conflict is a predicted loss of separation between two aircraft, referred to as the ownship and the intruder. A conflict prevention bands system computes ranges of maneuvers for the ownship that characterize regions in the airspace that are either conflict-free or “don’t go” zones that the ownwhip has to avoid. Conflict prevention bands are surprisingly dif...

This paper describes a conflict resolution algorithm that can provide automated separation assurance for the next generation air traffic control system. The algorithm generates resolution trajectories that can be sent to the aircraft from a ground-based system via data link. With suitable reconfiguration the algorithm can also be installed on board aircraft to support airborne separation assura...

OBJECTIVE This study examined whether benefits of conflict probe automation would occur in a future air traffic scenario in which air traffic service providers (ATSPs) are not directly responsible for freely maneuvering aircraft but are controlling other nonequipped aircraft (mixed-equipage environment). The objective was to examine how the type of automation imperfection (miss vs. false alarm)...

New air traffic management concepts distribute the responsibility for traffic separation among the several actors of the aerospace system. As a consequence, these concepts move the safety risk from human controllers to the onboard software and hardware systems. One example of the new kind of distributed systems is air traffic conflict detection and resolution. Traditional methods for safety ana...

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