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Results tagged with gnss
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user 755
GNSS is a global satellite navigation system. GPS is the US GNSS.
16
votes
Why don't planes (mostly airliners) primarily use GPS for navigation?
While the other answers are correct about why GPS (or similar GNSS, such as GLONASS, etc.) aren't used exclusively for aircraft navigation, I would say that, these days, the premise of this question is …
- 19.6k
10
votes
Why do planes need line of sight for GPS to work?
tl;dr: Mobile devices and designer watches with (RF) emergency beacons don't work without line-of-sight to some kind of receiver. Most types of RF communication signals require a close approximation o …
- 19.6k
4
votes
Why don't airliners have a navigation GPS as back up in case of a pitot tube malfunction?
The short answer to this question is that commercial airliners do have GPS and they have for a long time. AF447 almost certainly would have been equipped with GPS. While what Terry said about the diff …
- 19.6k