Ground-based avionics

Ground-Based Avionics. Ground-based avionics provide communications, navigational information. 

The radios that comprise the avionics of an aircraft include communications radios that pilots use to talk to air traffic control (ATC) and other aircraft and navigation radios. Early navigation radios relied on ground-based radio signals, but many aircraft have come to use GPS receivers that receive their information from satellites. Other components of an aircraft s avionics include a transponder, which sends a discrete code to ATG to identify the aircraft and is used in the military to discern ftiendly and enemy aircraft, and radar, which is used to locate rain and thunderstorms and to determine the aircraft s height above the ground. 

Perhaps the avionics system that has had the most impact on society is GPS. As GPS devices are being made more compact and more inexpensively, they are being used more and more in daily life. GPS can permit underdeveloped countries to improve their own air-navigation systems more rapidly without the expensive of buying and installing expensive ground-based navigational equipment or radar systems used by air traffic control fecUities. 

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