Precise Point Positioning from Combined GNSS

摘要

The quality of Fugro's Marinestar positioning services is continuously improving. Overall and due to the reduced ionospheric disturbances after the solar maximum, GNSS positioning results will be better. The typical accuracy of the G4+ solution is better than 4cm in horizontal and 8cm in height. The horizontal improvement of a G4+ PPP-RTK over a PPP G2 solution is between 6% and 27% horizontally and between 2% and 8% vertically. The improvement in height is limited by tropospheric error. Positioning by PPP-IAR techniques also requires more attention to the receiver-antenna set-up and surveyor's environment.