ADS-B
Automatic Dependant Surveilance-Broadcast (ADS-B)
ADS-B data is sourced from the aircraft mode S transponder or Universal Access Tranceiver (GA aircraft) and is totally independendent from CPDLC & ADS-C (contract) activity. It broadcasts continuously (about twice/sec) data such as Identification/Accuracy of GPS data/altitude/Vert trk/ Lat trk & GS and other info which ground stations and other aircraft can use.
In Aust a network of some 28 ground stations can receive ADS-B transmissions within approx 250nm (500nm around each station) to supplement radar coverage, together covering nearly all of Aust at 30000', this allows lat seperation of 5nm between ADS-B equip aircraft
Last edited by slamer.; 15th Apr 2007 at 02:11.