DAFUSA was a project No. TR1018 of the Telematics Programme (Transports sector) a part of DG XIII - the CEC 4th Framework Programme. The project was devoted to development of a data fusion system for application in traffic control in airports. INESC/INOV was responsible for the tasks of data modelling and definition of scenarios for evaluation of the data-fusion unit. The project partners were THOMSON, SYSECA, SYSABEL, SEXTANT, ISDEFE, UPM, AENA, EDISOFT and ANA.