4 ms·
> and because the GPS device also has a perfect clock The smart thing about GPS is that the GPS device doesn't need a perfect clock. It's comparing the phase
by femto 2y ago
> and because the GPS device also has a perfect clock
The smart thing about GPS is that the GPS device doesn't need a perfect clock. It's comparing the phase of signals from multiple satellites, so avoiding an absolute time of flight measurement, which would require an accurate clock.
- physicles 2y agoCame here to post this comment. It's a common misconception even among people who sort of know how GPS works.