What are RTK, dGPS and RINEX?
These are the three key positional services available via OS Net (see the GPS glossary document for descriptions): RTK (Real-Time Kinematic) GPS gives centimetric accuracy in real-time. DGPS (Differential GPS) gives sub-metre accuracy in real-time. RINEX (Receiver INdependent EXchange Format) refers to data for post- process applications.