Inplant Training Report

Topics: Air traffic control, All India Radio, Radio Pages: 21 (6647 words) Published: January 21, 2011

NAME : Nirmal Kumar.D BRANCH : ECE
CLASS : 4 – ‘A’
REG. NO: 10407534

( AAI )


Communication, Navigation, Surveillance (CNS) and Automation facilities are the vital elements for safe and reliable Air Traffic Services over designated airspace. Airports Authority of India (AAI) is the Air Traffic Service provider over the Indian airspace. Due to the overcrowded airspace globally, the safety and Reliability of the Air Traffic Services depend heavily on the CNS/ATM systems sustained by the CNS personnel on one side and the Air Traffic Controllers on the other side. The Pilots/ Airlines are the users of these services. These cores groups of the Aviation Professionals make the Sky Safe for the passengers to fly from one airport to another over the continents.


Airports Authority of India provides CNS/ATM facilities at 128 airports including Civil Enclaves. AAI manages the Indian Airspace covering an area of 2.8 million square nautical miles of land mass and the adjoining oceanic area as accepted by the International Civil Aviation Organization (ICAO). Over 1500 CNS professionals, with electronics, telecommunication and computer background are engaged round the clock for operational sustenance of the CNS/ATM Facilities. The CNS/ATM facilities are provided and maintained at all the times to meet the Standards and Recommended Practices (SARPs) specified by International Civil Aviation Organization (ICAO).

* Deployment of a mix of ground and space based Systems
* Provision of seamless navigation
* provision of complete surveillance coverage
* provision of air-ground voice and data communication
* incorporation of various levels of automation
* deployment of air and ground datalink
* use of interoperable system
The air traffic has grown enormously and is expected to grow further by 2020. The technologies are changing at a fast pace and difficulty in deciding the right technology among various contenders is leading to a situation where what is relevant today may be obsolete or not relevant tomorrow.

* Airspace users
* Airport operators
* Air navigation service providers
* Equipment manufacturers
* Airline, airport and air traffic service professionals
* Individuals, as both passengers and citizens

Communication System:

In future, voice communication will be used for critical messages, such as vectoring to avoid traffic and landing clearance at airports with heavy traffic. It will serve as back up for data link. VHF analogue radios available today are not compatible with upcoming new technology. The VHF Data Link (VDL) operation requires a VHF digital radio (VDR). VDL is essential for ATN implementation and consequently, for greater use of ATS data links. The availability of airborne equipment manufactured in series, including digital radios, will make it possible to equip a larger number of aircraft. The VDL formats specify a protocol for delivering data packets between airborne equipment and ground systems similar to that used in the aircraft communication addressing and reporting system (ACARS). The difference is that the VDL provides a capacity 10 times greater than the equivalent of 25 KHz VHF channel.

Data Link:

Data link is the basic component of communication between air traffic controller (ATC) units and aircraft. Data links were initially used only for ACARS communications but new equipments are compatible with ATN communications, which will improve the efficiency and compatibility of aeronautical VHF data channels. There are two types of ATS data links: one for the exchange of text...
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