Automatic Dependent Surveillance (ADS)

The function, working principle, the principles of usage andthe advantages of modern Automatic Dependent Surveillancesystem (ADS). The functions of the mentioned system aremanifold and its primary function is to enable the automaticexchange of various data between air traffic control units withthe aim of maintaining the safe separation of aircraft. Datasuch as call sign, aircraft position, time, altitude, vector information,speed, meteo information etc. can be fonvarded periodicallyor on request, and are received automatically in theaircraft via flight management computer (FMC). Also, theoverview of the possible communication systems which enablethe usage of ADS is given, with special emphasis on ADS aspart of further global development of navigation and air trafficsafety system, which was approved by the International CivilAviation Organisation (JCAO). Finally, a new, improved versionof Automatic Dependent Swveillance, ADS- B (Broadcast)is briefly outlined, a version which enables omni-directionalemission of addressed infonnation.