News for hackers. Stuff that matters.

A comment on Amazon Prime Air. Parent comment

Re:Amazon Prime Air by fosk on Sunday December 01, 2013 @10:34PM (#6831374)
What are other good alternatives to GPS?
[ Parent | on HN ]
Re:Amazon Prime Air by tcas on Monday December 02, 2013 @11:59AM (#6834808)
Inertial navigation systems[1] have been used for more years than GPS has existed. Even now almost all military drones / rockets / ICBMs use very precise inertial systems.

[1] http://en.wikipedia.org/wiki/Inertial_navigation_system

[ Parent | on HN ]
Re:Amazon Prime Air by nwh on Sunday December 01, 2013 @11:57PM (#6831710)
http://en.wikipedia.org/wiki/GLONASS
[ Parent | on HN ]
Re:Amazon Prime Air by MikeCodeAwesome on Sunday December 01, 2013 @11:39PM (#6831638)
Two guesses: cellular location services and custom radio telemetry systems. Maybe that's one guess.
[ Parent | on HN ]