ABSTRACT
More accurate than radar, Automatic Dependent Surveillance—Broadcast (ADS-B) systems determine their own ship surveillance information very precisely using global navigation satellite system (GNSS) receivers installed on aircraft or vehicle. At its core, ADS-B is based on aircraft and airport ground vehicles cooperatively transmitting traffic surveillance information updated frequently. The ADS-B surveillance information is typically significantly better than today’s traffic surveillance information and, as such, enables family of ground-based and aircraft-based applications that will improve the safety and operational efficiency of the air transportation system. ADS-B ground stations receive the broadcasts and relay the information to Air Traffic Control (ATC) for the precise tracking of ADS-B-equipped aircraft and vehicles. ADS-B ground stations receive the broadcasts and relay the information to ATC for precise tracking of ADS-B-equipped aircraft and vehicles. ADS-B OUT is being mandated for aircraft entering designated airspace by civil aviation authorities and air traffic service providers around the world including those in Australia, Canada, Europe, United States and others.
