Unlike conventional real-time kinematic surveys which use a single base station, real-time network RTK GPS surveys use several base stations mounted where?

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Real-time network RTK relies on a network of permanently operating reference stations spread across the region. These stations continuously observe satellites and feed data to a processing system that generates location-specific corrections (often via virtual reference stations) for rovers in the field. Because the corrections are built from a stable, ongoing network, multiple permanently operating bases are needed rather than a single base or temporary setups. This setup provides area-wide, real-time cm-level accuracy, which a lone base or temporary stations could not consistently deliver.