Polytechnic University of Valencia (UPV) is currently considered one of the leading universities in Spain, and it is among the Spanish Universities with the highest revenue from competitive research. The UPV concentrates much of its research activity in the Polytechnic City of Innovation (CPI), where most of the UPV research institutes are located. Among the CPI R&D institutes, the Institute of Information and Communication Technologies (ITACA) was established in 2000 aiming at fuelling scientific breakthroughs and technological advances with an interdisciplinary approach. ITACA conducts research over a broad spectrum of disciplines related to ICT, including aeronautical telecommunications. The Air Navigation Systems (SNA) group is the ITACA research line focused on surveillance and navigation systems and their applications. Researchers from SNA have developed an intensive research work and they are currently involved in research projects such as the SESAR2020 ER4 BUBBLES’ and is collaborating with EUROCONTROL in upgrading the SASS-C tool.