For air traffic control, SASS-C is an acronym for "Surveillance Analysis Support System for ATC-Centre".

Evolutions for handling drones, Multi Static Primary Surveillance (MSPSR) and Surface Movement Area-specific sensors are considered in the future.

Since end of 2003 and in order to prepare SASS-C for the next decade, important software re-engineering has been undertaken in conjunction with functional upgrades, with the aim to introduce up to date technologies in all relevant fields while enhancing system quality.

The main functional upgrades relate to the introduction of Aircraft Derived data (Mode S and ADS-B), and multilateration technology in the Surveillance environment.

Taking different resolutions of Digital Terrain Elevation Data – DTED as input, PREDICTion computes the theoretical performance of ATC surveillance sensors like radars and ADS-B or WAM ground stations: The theoretical coverage is generated in two forms that can be used in other tools like SASS-C VERIFication: