providing a surveillance service at a much lower cost, greater reliability and higher levels of accuracy than conventional SSR
Use INVOLI GROUND-BASED NETWORK OF SENSORS FOR SURVEILLANCE DATA
Multilateration is a proven cooperative surveillance technology consisting of a network of antennas connected to a central processing and tracking system that can determine positions of aircraft equipped with a transponder. coverage of large airspace have been achieved in the last years across several ANSPs, to complete but also to replace conventional Secondary Radars.
Multilateration (MLAT) requires no additional avionics equipment, as it uses replies from Mode S and Mode A/C transponders, as well as military IFF and ADS-B transponders. MLAT is an enabling technology that will enhance the provision of ATM in a variety of applications, from “radar-like” air traffic control purposes to enhanced situational awareness of surface movements. MLAT offers most advantages in situations where other surveillance systems (eg. radar) are not available. It can also be combined with other surveillance systems, such as radar and ADS-B, to improve the total surveillance picture (from ICAO MLAT Concept of Use).