Flying from one place to another without knowing where they are can be a daunting task for many people. This is where flight tracking websites come to the rescue. These tracking websites work to find out the exact location of the flight.
Flight-tracking technology is revolutionizing the aviation industry. Typically, data for tracking aircraft was obtained from airports as a source of information, but the accuracy of this data used to be a bit off.
Using new methods, data is now acquired directly from the aircraft. This is made possible by the automatic dependent surveillance-broadcast technology, or ADS-B technology used in modern aircraft.
Read also: Watch Viral Video: Passengers sing ‘Baby Shark’ to comfort crying baby on flight
ADS-B technology is a complex, relatively new system used to track flights. For a better understanding, we have explained here how the aircraft tracking site works to find out the exact location of an aircraft.
What is ADS-B technology?
ADS-B technology is a sophisticated system that was first designed for pilots to track entire traffic with greater accuracy. This enables pilots to be updated about the most up to date terrain and weather updates, along with other information.
Other information transmitted by the technology includes speed, altitude and aircraft identification. It also includes airspace information or other ADS-B aircraft reports.
How does ADS-B work?
It deals with transmitting signals through satellite based networks. The signal is received from an ADS-B transponder on an aircraft with location information, among other details. The signal is then selected by a receiver to provide the required information.
The technology uses high frequency to transmit signals, therefore limiting the access of information. This limited access sometimes becomes a hindrance to the precise location of aircraft in the far end of the ocean.
Due to the limited reach, the flight altitude needs to be increased in proportion to the distance from the receiver to ensure that the signal is received properly.
What if an aircraft is out of ADS-B category?
If the destination of the flight is known, the position of an aircraft flying out of coverage can be calculated for up to 2 hours. The situation is predicted for up to 10 minutes for aircraft with no known destination.
Position is estimated using various characteristics and is usually relatively accurate, but for longer flights, the position may be 100 kilometers (55 mi) away. There is a parameter in the options for how long you want to see the projected plane on the map.
How are flights tracked without ADS-B?
Non-ADS-B flights are tracked using a radar tracking system, or positions can be calculated using multilateration (MLAT). The MLAT system uses a method called Time of Arrival Difference (TDOA). However, MLAT coverage is only accessible above 3,000–10,000 feet.
By monitoring the time taken to receive the signal it is possible to calculate the position of the aircraft using the ModeS-transponder. For MLAT to operate, four or more FR24-receivers must receive signals from the same aircraft. As altitude increases the probability of four or more receivers receiving the transponder signal increases.
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/*$( ".comment-button" ).live("click", disqusToggle);
function disqusToggle() {
var id = $(this).attr("id");
$("#disqus_thread1" + id).toggle();
};*/
//$(".main-rhs2446404").theiaStickySidebar();
var prev_content_height = $(content_selector).height();
//$(function() {
var layout = $(content_selector);
var st = 0;
///});
}
}
});
/*}
};*/
})(jQuery);