Data fusion algorithms based on radar and ADS measurements for ATC application

In this paper we describe a tracking function for air traffic control based on radar and ADS-B messages. The use of both sensors can lead to an important improvement both in track accuracy and overall system integrity. Our system makes use of all measurements available, providing a unique track for each aircraft, correcting sensor biases, using very accurate coordinate conversions, and solving data association prior to data fusion. It has been designed to face an avionics changing environment, and it is able to correctly and accurately track aircraft with different avionics (with or without SSR transponder, or ADS-B avionics), as is shown in the results obtained through simulation.