Differential and high-precision positioning

The purpose of the work is to study the methods of satellite positioning as applied to determining the location of moving objects. The motivation for writing the article was the terminological inconsistency that occurs in some sources of literature. In particular, differential positioning is mistakenly called high-precision, and high-precision is not mentioned. The article shows the difference between GPS positioning, DGPS positioning and precise point positioning PPP. The content of each technology is disclosed and a taxonomy of the implementation of methods is given. It is shown that for transport tasks it is advisable to apply the concept of PPP in real time (RT-PPP). To calculate corrections to GNSS orbits and clocks in real time, it is advisable to use the dynamic and semi-dynamic method.

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