Instrument Landing System is a system installed in the aeroplanes for a safe landing. This slide includes all the necessary details about the system, components, installations, working, upgradations.
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Instrument Landing System
1. Instrument Landing System
Department: Electronics and Communication
Engineering
Batch: 2011-2015
CAMELLIA INSTITUTE OF TECHNOLOGY
2. Contents
1. What is an ILS?
2. History of ILS
3. Components of ILS
4. Ground Installations
5. How does an ILS work?
6. Marker Beacons and Precision Runway
7. Global Positioning System
8. On-Board Flight Equipment
9. Unfortunates
3. What is ILS?
An Instrument Landing
System (ILS) is a radio
beam transmitter that
provides a direction for
approaching aircraft that
tune their receiver to the
ILS frequency.
It uses a combination of
radio signals, to enable a
safe landing
during instrument
meteorological conditions
(IMC)such as
low ceilings or reduced
visibility due to fog, rain,
or blowing snow
4. History of ILS
• Tests of the first ILS began in 1929
• The first scheduled passenger airliner to land using ILS was
in 1938. A Pennsylvania-Central Airlines Boeing 247-D.
• In 1949, ICAO adapted an ILS standard developed by the
US Army as a standard system for all of its member
countries.
5. Components of ILS
• Glide Path Indications • ILS Indicator
• Localizer Indications
9. Global Positioning System
Each satellite knows its position and its distance from
the center of the earth by TRILATERATION. With this
information and the calculated distance,
the receiver calculates its position.
An
actual cock-pit
using GPS
in it’s ILS
GPS provides specially coded satellite signals that
can be processed with a GPS receiver, enabling the
receiver to compute position, velocity and time.