The Research Of Technologies Of The Conflict Detection And Resolution Among Multi-aircraft In Free Flight Airspace

International civil aviation circle proposed the concept of free flight with the increasing of air traffic flow. Under the free flight environment, possibility of conflicting will increase greatly. Technology of conflict detection and conflict resolution will be a key technology of improving flight safety and benefit. In this paper, we derived the detection models of three planes and multi-aircraft on the basis of detection method in conflict between two planes. In the respect of resolution, we adopted the linear programming method to set up the model of resolution and proved it; referenced the optimum control theory model and carried on emulation simulation with the technology of the computer. Finally, we compared the results of resolution of two kinds of algorithms, and the former's calculation is simple and does benefit to controller to handle, but it is more stiff to free from the orbit; The latter's course is complicated, slick and sly a lot orbits.