Equipment used in CNS department of any International Airport is well presented. CNS stands for Communication, Navigation and Surveillance.

1. A PRESENTATION on CNS Dept. of Airport authority of india
Submitted By:
Vipul Tripathi
Electronics(2nd Year),
1816630060
UNDER SUPERVISION:
Ms. Priyanka Gautam
Lecturer EL Department
Dr AITH, Kanpur

2. CONTENTS
1. Introduction to AAI
2. Introduction to CNS
3. Communication Facilities
4. Navigation Facilities
5. Surveillance Facilities
6. Automation
7. Security

3. Airport Authority of INDIA (AAI)
 Formed under the act of parliament – AIRPORT AUTHORITY OF
INDIA ACT 1994.
 Organisation under the Ministry of Civil Aviation that manages all the
airports in India.
 AAI manages 125 Airports.

4. Introduction to CNS
COMMUNICATION
Communication is the
exchange of voice and data
information between the pilot
and Air Traffic Controllers or
Flight Information Centers.
NAVIGATION
Navigation element of CNS
systems is meant to provide
Accurate, Reliable and
Seamless position &
determination capability to
aircrafts.
SURVEILLANCE
Surveillance assists Air Traffic
Controllers in pin pointing the
position of the Aircraft at any
time.

5. Communication Facilities
 VHF ( Air to Ground Voice Communication )
 DSCN
 Digital Voice Tape Recorder
 Transmission Lines
 AMSS

6. VHF
 VHF stand for VERY HIGH FREQUENCY.
 VHF varies from 30 MHz to 300 MHz & these frequencies are not affected by
atmospheric noise.
 Communication between ATC and Aircrafts.
 Transmitter
 Receiver

7. DSCN
DSCN stands for Dedicated Satellite Communication Network.
Purpose of DSCN
• To provide Security
• To reduce Manpower
• It is economical

8. AMSS
 AMSS stands for Automatic Message Switching System.
 AMSS works on the principle of “Store and Forward”.
 AFTN (Aeronautical Fixed Telecommunication Network )
 Messages can be stored temporarily at message switches, when network
congestion becomes a problem.

9. Navigation-aids Facilities
 DME
 ILS
 DVOR

10. DME
 DME stands for Distance Measuring Equipment.
 Provides visual information to pilot regarding hisher position(distance) relative to
ground based DME.
 Its frequency range is from 960 MHz to 1215 MHz.
 Less Reflection and Attenuation.

11. ILS
 ILS stands for Instrument Landing System.
 Provides safe landings of aircrafts at airports under conditions of low ceiling and
limited visibility.
 Reduces interruption of services at runway resulting from bad weather.
 Increases traffic handling capacity.
 Installed in the vicinity of the runway.
 Consists of two parts –
1. Localizer
2. Glide Path

12. DVOR
 DVOR stands for Doppler Very High Frequency Omni Range.
 Broadcast a radio signal encoding both the identity and the bearing (angle).
 Its frequency range is from 112 MHz to 118 MHz.
 48 antennas are used along with a central antenna.

13. Surveillance Facilities
 Primary Radar
 Secondary Radar
 Surface Movement Radar
 Automatic Dependent Surveillance
 Human Machine Interface System (includes Tower consoles, ATS)

14. Radar
 RADAR stands for Radio Detection and Ranging.
 Uses radio waves to determine the range, angle and velocity of objects.
 Aircrafts as well as vehicular traffic at Airports are monitored by means of high-resolution
radar.
 Primary Surveillance Radar (PSR) transmits EM signal. The aircraft acts as passive
element and reflects the EM energy back towards the primary radar antenna.
 Secondary Surveillance Radar (SSR) transmits EM signal. The aircraft acts as active
element and answers with the signal back to the secondary radar.
 Surface Movement Radar (SMR) is used to detect aircraft and vehicles on the surface of
an airport.

15. Security Equipments
Hand held Metal Detector Door Frame Metal Detector
X _ BIS CCTV

16. Production and Services
Passenger
Facilities
Air
Navigation
Training
Aerodrome
Faciliies
HRD
Training
Security