GPS landing technique has provided an alternative for the now lousy radar system. In fact lots of airports are switching to this system as it works to decongest the air. So how does it work, and how does a plane fitted with a GPS Device correct the error that could be a margin of at least 30 feet?
This state of art technology has been provided by Honeywell Aerospace, an arm of the $37 billion industrial conglomerate, which has supplied Qantas and a growing list of airports and airlines with the only available ground-based augmentation system (GBAS) for GPS-enabled navigation.
The most interesting part of this GPS based techniques is reducing air traffic congestion problem. The present radio system provides only one path option for an incoming plane but with GPS based techniques more than twenty five available path options are broadcasted and guided to enter for landing. This will ensure more efficient use of the sky. The planes will not have to wait for a long time and unnecessary wasting of fuels on the airport for getting green signal to take off. This can save a lot on fuel costs and carbon emission in atmosphere which makes it a green approach.
This GPS based landing system uses four antennas which is generally placed around the airport for better broadcasting however it may be placed anywhere around the airport for its purpose. These antennas actually collect data from its specified range and accordingly report about route options available after analysis.
In this fast and professional world time is the most precious capital for everyone. This GPS based landing technique will save a lot of time for airport authorities and passengers too. This technique ensures not only congestion free route but also stops the disturbances in flights due to weather problem. The present airport landing system records a lot of loss due to decreased capacity caused by bad weather. This GPS landing techniques operates efficiently even during bad weather.