Airservices has deployed ADS-B ground stations across Australia which provide almost nationwide air traffic surveillance capability at flight levels above FL300. Substantial ADS-B coverage exists at lower levels – extending to near the surface in the vicinity of each ground station.
ADS-B ground stations have been installed at remote locations in Australia, co-located with existing radio communication facilities. Position and altitude data received from aircraft through the ADS-B ground stations is transmitted back to the ATC centres to enable radar-like ATC services in areas where radar coverage does not exist. Our Wide Area Multilateration systems in Sydney and Tasmania also process ADS-B data. Airservices is committed to improving ADS-B coverage over the next few years, especially in north Queensland and regional aerodromes.
The Australian Advanced Air Traffic System (TAAATS) has been upgraded to process as many as 2000 ADS-B flights simultaneously from up to 200 ground stations. TAAATS also now uses ADS-B technology to provide air traffic controllers with automated safety alerting capabilities and continually monitors the assigned route and altitude of ADS-B approved aircraft for any discrepancies.
A new Receiver Autonomous Integrity Monitoring (RAIM) system has been purchased under the program to provide controllers with real-time information on Global Navigation Satellite System integrity.
Aircraft equipped with ADS-B out, provide accurate and real time positional information to air traffic control. This positional information enables ATC to provide the following services:
- surveillance based separations standards, which can be less restrictive than non-surveillance separation tolerances and increases the likelihood of operation at preferred levels and on preferred routes
- enhanced safety net alerting
- accurate traffic information and flight following services
- potential for an improved SAR response where the aircraft position is accurately known