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A comment on A plane flying over Germany drawing a Christmas tree. Parent comment

Re:A plane flying over Germany drawing a Christmas tree by remael on Wednesday December 13, 2017 @11:29AM (#15915229)
They could be employing some verification by using multilateration (time (difference) of arrival) between their receivers, which would make it a lot more resistant to spoofing.

EDIT: https://www.flightradar24.com/how-it-works#mlat

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Re:A plane flying over Germany drawing a Christmas tree by jcims on Wednesday December 13, 2017 @03:11PM (#15917230)
Definitely plausible for ATC installs.
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