From what I gather, it's mostly done by amateur enthusiasts with equipment that can read the transponder signals and transmit it to the website (read the 'increase coverage' link on the website)
And you don't get many amateur ATC enthusiasts in the middle of the atlantic..
I thought it compares GPS data in your phone with actual planes positions given that planes in air rarely go in distance closer than couple of kilometers.
no, it reads the ADS-B transponder signals that most planes transmit (there are other formats, but those apparently can't be read by amateurs), with receivers that plane spotters/aircraft enthusiasts put up themselves. Each receiver has a range of up to 400km.
A normal cell phone shouldn't have signal at 37k feet
just had an A380 casually flying by on its way to Tokyo ...
Been using it for years. Event got my mother in law to check it while they were camping 30 km outside Billinud Airport. She had nothing to do and thoughtit could be fun to se where the planes come from:-)
Millitary aircraft is not shown either, they use ar different tranponder system.
I did a lot of reading about it on may 4th while checking to se if the Battle of Brittian Memorial Flight Lancaster took off from RAF Coningsby as planed.
I dont know a mobile phone or even smartest smartphone with such receiver - thus it has to localize itself and gather data from servers to compare its position and planes around.
the whole system has nothing to do with mobile phones. Those receivers are small boxes that you can connect to your PC, and some software then sends the received data to the sites server, which has hundreds of flight plans online. Both combined is what you see on the site (if you need more info, look it up under 'INCREASE COVERAGE')
The augmented reality app just adds the phones GPS coordinates in the mix
I know now that all the big four engined jets flying directly over here are either on its way to or coming from Japan.
edit: oh, just realized you were asking about the augmented reality app, nvm