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I thought with radar we could track every plane on earth at all times? By bouncing it off the ionosphere or something?
by JonnieCache 13y ago
I thought with radar we could track every plane on earth at all times? By bouncing it off the ionosphere or something?
- deleted 13y ago[deleted]
- level09 13y agoI had the same impression as well : http://www.flightradar24.com/ http://www.flightradar24.com/
- xadoc 13y agothere is a 250-400 km range for FlightRadar, it does not cover oceans very well. http://www.flightradar24.com/how-it-works http://www.flightradar24.com/how-it-works "Flightradar24 has a network of more than 3,000 ADS-B receivers around the world that receives plane and flight information from aircraft with ADS-B transponders and sends this information to our servers. Due to the high frequency used (1090 MHz) the coverage from each receiver is limited to about 250-400 km (150-250 miles) in all directions depending on location. The farther away from the receiver an aircraft is flying, the higher it must fly to be covered by the receiver. The distance limit makes it very hard to get ADS-B coverage over oceans."
- jebus989 13y agoLooks like they did a pretty good job: https://twitter.com/flightradar24/status/442145510615289856 https://twitter.com/flightradar24/status/442145510615289856 After hours of misinformation re: "2 hours into flight", the airline apparently agreed with the flightradar data: https://twitter.com/flightradar24/status/442222070727204864 https://twitter.com/flightradar24/status/442222070727204864
- JonnieCache 13y agoI was thinking more about NORAD and the like.
- seeken 13y agoI think generally tracking is done with radar transponders which can be disabled from the cockpit.