If you wish to contribute or participate in the discussions about articles you are invited to join Navipedia as a registered userPrecise point positioning (PPP) stands out as an optimal approach for providing global augmentation services using current and coming GNSS constellations. Combining the precise satellite positions and clocks with a dual-frequency GNSS receiver, PPP is able to provide position solutions at centimetre to decimetre level. PPP requires fewer reference stations globally distributed rather than classic differential approaches (e.g. RTK), also one set of precise orbit and clock data (computed by a processing centre) is valid for all users everywhere, and the solution is largely unaffected by individual reference-station failures. There are always many reference stations observing the same satellite because the precise orbits and clocks are calculated from a global network of reference stations. As a result, PPP gives a highly redundant and robust position solution.
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