The Federal Aviation Administration and the International Civil Aviation Organization, a specialized agency of the United Nations, established GATM standards to keep air travel safe and effective in increasingly crowded worldwide air space.
Efforts are being made worldwide to test and implement new technologies that will allow GATM to efficiently support air traffic control.
[1] Airservices Australia ADS-B initiative is one of the major implementation programs in this field.
This could eliminate the need for a variety of ground and airborne systems that were designed to meet specific requirements for certain phases of flight.
Standard and recommended practices for the air traffic management based on a global navigation satellite system are developed by ICAO (International Civil Aviation Organization).