7 Aug
2023
7 Aug
'23
6:03 a.m.
On Sun, Aug 6, 2023 at 11:36 PM Mel Beckman <mel@beckman.org> wrote:
GPS Selective Availability did not disrupt the timing chain of GPS, only the ephemeris (position information). But a government-disrupted timebase scenario has never occurred, while hackers are a documented threat.
DNS has DNSSec, which while not deployed as broadly as we might like, at least lets us know which servers we can trust.
NTP has NTS, which all 5 servers I mentioned have, and many more also have.
Your own atomic clocks still have to be synced to a common standard to be useful. To what are they sync’d? GPS, I’ll wager.
Nope, they are synced to the reference atomic clock of National Observatory, pretty similar to USNO but local. Rubens