Automatic Dependent Surveillance – Broadcast

For PPL, CPL & ATPL aspirants who wants to become a good pilot, during flying ADS-Bplays a vital role for ensuring accurate real-time surveillance and navigation. To ensure this, pilot has to be well versant with functionality of ADS-B & other related systems.  At Gracious Avatar during commercial pilot training classes for PPL, CPL & ATPL aspirants, ADS-B and relevant systems will be covered by the expert ground instructors.  Aircraft systems / equipment is one of the important topic which would be covered during CPL & APTL pilot training at Gracious Avatar, Gurgaon (India).

Automatic Dependent Surveillance – Broadcast

ADS-B is a Surveillance technique that relies on aircraft or airport vehicles broadcasting their identity, position and other information derived from on board systems.

ADS-B is a thorough new technology that is redefining COMMUNICATIONS – NAVIGATION – SURVEILLANCE in Air Traffic Management today.

Already proven and certified as a feasible low cost replacement for conventional radar, ADS-B allows pilots and air traffic controllers to “see” and control aircraft with more precision, and over a far larger percentage of the earth’s surface, than has ever been possible before.

Theory Behind The Nomenclature:

Automatic      –        It’s always ON and requires no operator intervention

Dependent    –        It depends on an accurate GNSS signal for position data

Surveillance   –        It provides “Radar-like” surveillance services, much like RADAR

Broadcast.    –         It continuously broadcasts aircraft position and other data to                                            any aircraft, or ground station equipped to receive ADS-B

How It Works?

ADS-B uses conventional Global Navigation Satellite System (GNSS) technology and a relatively simple broadcast communications link as its fundamental components. Also, unlike radar, ADS-B accuracy does not seriously degrade with range, atmospheric conditions, or target altitude and update intervals do not depend on the rotational speed or reliability of mechanical antennas.

The ADS-B capable aircraft uses an ordinary GNSSreceiver to derive its precise position from the GNSS constellation, then combines that position with any number of aircraft discrete, such as speed, heading, altitude and flight number. This information is then simultaneously broadcast to other ADS-B capable aircraft and to ADS-B ground, or satellite communications transceivers which then relay the aircraft’s position and additional information to Air Traffic Control centres in real time.

The implementation of the ADS-B system will support the provision of high performance surveillance, enhancing flight safety, facilitating the reduction of separation minima and supporting user demands such as user-preferred trajectories.

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