3 ms·
There are a couple of things I wonder about RTK that maybe you or somebody else in this thread can help me with? 1. Where does the kinematics in the name come
by sorenjan 2y ago
There are a couple of things I wonder about RTK that maybe you or somebody else in this thread can help me with?
1. Where does the kinematics in the name come from? The base station is stationary, and kinematics is about the movement of objects.
2. How does the correction signals work? Is it as simple as "now the position is 3.56 m to the left of the true position, correct your position accordingly", or is it more advanced with detailed timing corrections for each satellite's signal or similar?
- BenjiWiebe 2y agoI'm not an expert either, but I do know it's per satellite, and uses several data points per satellite.
- bmicraft 2y agoHow I understand it, RTK comes into play you want to get very precise location on a moving vehicle. To make the location reading more precise you need to take it over some time. To average it while moving you need to know _how_ you're moving. Therefore the need for RTK. The RTK position is then combined with the measured error (measured near that location), because GPS is precise but not accurate enough on it's own. Without correction a stationary point slowly drifts around a bit (accuracy: roughly 0.1-1 meters). The correction is called differential gps, and you can provide it yourself with a base station, or use a service that does just gives it to you (from their network of error measuring base stations), see NTRIP. The accuracy with correction can be greater than 0.01m