This article discusses the newly developed satellite guidance system EGNOS, and how it helps planes approach and land more safely.
A recent news release by the European Space agency has stated that a system of monitoring the flight approach and landing procedure is being tested.
This system has been put into operation with the help of European Geostationary Navigation Overlay Service (EGNOS), launched recently by the European Space Agency.
The different between the traditional ILS (Instrument Landing System) and EGNOS guidance systems is that where ILS issues guidance based on measurements made with reference to the ground, the EGNOS service issues vertical guidance through signals from the sky.
EGNOS tests have shown that the flights can adhere to the safety standards better when this system is used. The data that the pilots receive help them to align the flight with the axis of the runway and track their descent all the way down.
The advantages of EGNOS system are:
a) The data shown in the cockpit displays is same as that of the ILS system, eliminating any undue confusion.
b) It can provide vertical guidance for every runway and does not require installing any additional equipment.
c) Any aircraft can receive this information without having to change equipment.
d) Provides greater accuracy than the ILS system.
This system will soon be implemented for Air Traffic Control systems also. Currently in test phase, this system is scheduled to go completely operational in a few years. EGNOS is the first satellite navigational system, which was launched with intent to make air travel safer. Systems compatible with EGNOS have been installed in USA, Japan and India.
