alt Hacker NewsNo, they don’t. GPS is orders of magnitude less reliable than the most up to date metric time synchronization over fixed topology fiber links.
Replies
CamperBob2 • yesterday at 6:30 PM
I doubt that very much. GPS time integrity is a big deal in many very important applications -- not the least of which is GPS itself -- and is treated as such.
Yes, an individual fiber distribution system can be much more accurate than GNSS time, but availability is what actually matters. Five nines at USNO would get somebody fired.
I wonder why we bothered building GPS signal waveguides into the bottom of a mine then. Clearly we should have consulted the experts of hacker news first.
Losing NTP for a day is going to affect fuck-all.