Unlike conventional real-time kinematic surveys, real-time network RTK GPS surveys employ what?

Real-time network RTK (RTK GPS) surveys utilize a system of multiple, permanently mounted reference stations. This approach differs from conventional RTK surveys, which typically rely on a single base station for correction data. The network of permanently mounted reference stations in a real-time network RTK system allows for a broader spatial coverage and improved accuracy.

By using multiple reference stations that are strategically located, the system can effectively mitigate issues such as multipath errors and signal blockage, which are often encountered in traditional single-station setups. This redundancy also enhances the reliability of the positioning information because if one station experiences interference or failure, others can still provide accurate corrections to the rover units.

Additionally, the data from each of these stations is combined by a network processing system to deliver precise real-time corrections to the GPS receiver in the field, ensuring a more robust solution compared to using a single reference point. This makes real-time network RTK a preferred choice for applications that require high accuracy over larger areas.