Abstract:

The future development of ATC is to track the flight object which is equipped with the appropriate interval considering the control of intention，then we can real-time dynamically master the position between the aircraft. Based on the 4D trajectory application plan of the American Next-Gen air traffic management system,the paper use the UML and XML Schema to design a conceptual and logical data model of 4D trajectory,it proposes a model of publish and subscribe service in the interoperability. By analysising the model of QoS(quality of service)data synchronization,it can effectively regulate the 4D trajectory interoperable data exchange.

Key words: 4D trajectory, data interoperability, QoS structure