Accuracy is dependent upon various factors including the number of satellites tracked, satellite geometry, observation time, ephemeris accuracy, ionospheric disturbance, multipath and resolved ambiguities.
The following accuracies, given as root mean square, are based on real-time measurements.
The use of multiple GNSS systems can increase accuracy by up to 30% relative to GPS only.
Horizontal real-time accuracy
Vertical real-time accuracy
* Measurement precision, accuracy and reliability depend upon various factors
including number of available satellites, geometry proximity to base station,
multipath effects or ionospheric conditions.