How are flights tracked in real time? Economy – Arabic and international

The flight-following mechanism is one of the most prominent technologies that has enabled many people today to monitor their flight path, from the take-off of the plane to the pier, including appointments. you pre-programmed and sometimes identifying emergencies or possible delays.

Data is collected to track aircraft from several sources, including Autonomous Autonomous Surveillance Transmission System (ADS-B) data, where the aircraft regularly sends its location and other information to the ground control device, the MLAT system to calculate jet lag and estimate aircraft location, as well as side-by-side radar data. With information on schedules and flight status of airlines and airports.

According to “Flight Radar”, one of the largest companies specializing in tracking companies, the basic technology used to receive flight information is called automatic surveillance broadcast, as the aircraft obtains its position from a GPS navigation source (satellite), while the ADS-B transceiver transmits On board the aircraft, a signal containing the location to be captured by a receiver connected to the company network, then displayed on the site or applications.

According to the company, ADS-B is a relatively new technology in development and it estimates that nearly 70% of all commercial passenger aircraft (80% in Europe, 60% in the United States) are equipped with an ADS transmitter and receiver.

She pointed out that for general aviation, this figure could be less than 20%, explaining that the percentage of aircraft equipped with ADS-B receivers is steadily increasing and that it will become mandatory for most aircraft worldwide. by 2020, when ADS-B will replace the primary radar as a surveillance method. Primary used by ATC.

The ADS-B system allows the aircraft on board to determine its position by transmitting information every second, in addition to altitude, speed and direction information, as well as the aircraft identification code, and due to the high frequency used (1090 MHz), the coverage of each receiver is limited to approximately 250 -450 km (150-250 miles) in all directions depending on the location, the further the aircraft is from the receiver, it must fly at a higher altitude for the receiver to cover it.

In some areas covered by multiple receivers, the locations of aircraft not equipped with ADS-B are also calculated using (MLAT), i.e. the time difference calculation or (the time difference of arrival), measuring the time it takes to receive the signal from the aircraft and calculating its position, and it takes four. One or more receivers receive signals from the same aircraft, to operate this technology, according to “Flight Radar”.

“Flight Radar” added that satellite flight tracking is the latest step in its quest to achieve worldwide ADS-B coverage, as satellites equipped with ADS-B receivers collect data from aircraft outside the area of. network coverage on the ground and send that data to the corporate network. .

In general, the ADS-B satellite system increases the coverage of flights over the ocean where terrestrial reception is not possible.

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