Aquest ítem conté el treball original, defensat el 8 de gener de 2019, així com una versió corregida del mateix a data de 13 de gener de 2020. Els canvis introduïts a la segona versió consisteixen en correccions estilístiques i de tipografia principalment.

On this final degree project, it will be discussed the problems associated with integrating Unmanned Aircraft Systems (UAS), including Remotely-Piloted Aircraft Systems (RPAS), into the airspace. The different problems as aircraft separation or UAS altimetry will be exposed and commented. First, it is going to be discussed about a UAS ATM Common altitude system and also the main reference system to compute the aircraft altitudes. Showing the advantages and disadvantages of each system, GNSS, QNH, QFE, FL, and in which situations they are used. Also it is going to be introduced the Visual Flight Rules, specially for very low altitudes. It would be seen the differences between Europe and North America, what makes more difficult to set up a new system. In order to solve the problem, a server is going to be created so the altitude from many different UAS or RPAS could be compared although they are not using the same system. Real data from the scientific department of the US will be used on the server to compute the changes of systems. Once it’s explained how the server is working, and which is the way the aircrafts or drones connects to it, the results will be shown and commented. When the results are displayed, it would be possible to understand why is difficult to compare an UAS and a RPAS when both of them are using different altitude systems and how dangerous it could be. The results will show real situations simulated over real airports, using the data from de US department. Then we will comment if the results obtained are the ones we were waiting and if new problems appear.