3 ms·
Survey quality GPS is able to have centimeter accuracy. https://en.wikipedia.org/wiki/Real-time_kinematic https://en.wikipedia.org/wiki/Real-time_kinematic
by gonzo41 7y ago
Survey quality GPS is able to have centimeter accuracy.
https://en.wikipedia.org/wiki/Real-time_kinematic https://en.wikipedia.org/wiki/Real-time_kinematic
- mlyle 7y agoBut centimeter accuracy is of limited value. It doesn't tell you how the mirror base inclination has changed due to subsidence and thermal effects. If every mirror has drifted a small angle, and you're trying to point them all at a very small target-- it's hard.