3 ms·

For GPS precision is much more important than accuracy.

• Dylan16807 5y ago
  Precision vs. accuracy of what measurement? For GPS to work at all, you need very accurate knowledge of the offset between each satellite's signal. The only way I can think of to have precision but not accuracy is if you design a system where there's a buffer between the antenna and the signal processing and you don't know how long the buffer is. Is a design like that a practical concern?
  • WinterMount223 5y ago
    Of UTC. Theoretically GPS can work out of sync with respect to UTC as long as all satellites are in sync among themselves.
    • Dylan16807 5y ago
      Oh, you're talking about a theoretical situation where the GPS satellites are reprogrammed to use a different synchronization source? Personally I'd still call that highly accurate, but to a different time standard. But I see where you're coming from.
  • karpierz 5y ago
    They're saying that as a receiver of GPS signals, it doesn't matter if your clock is out of sync with everyone else's clocks, as long as it measures the length of a nanosecond accurately.
    • Dylan16807 5y ago
      But GPS gives you a clock signal.