Dynamic service definition in the future mixed surveillance environment

Multiple sensor management in an air traffic control application. The future Air Traffic SurveiIlance environment is expected to be heterogeneous and include new types of Data Sources capable of transmitting aircraft derived data directly extracted from the avionics. The Dynamic Service Definition function (DSD) has to establish contracts with the new data sources in order to serve air derived information to the Air Traffic Management users depending on their current needs (required data, periodicity...) and on the capability of the new data sources to provide the requested information. The DSD dynamically manages the connected data sources and optimize their use in sharing the global sensor load. This resource allocation problem-that has also to take into account the stability of the system and the continuity of the service - is an application of the use of t constraint programming techniques.