What does RTK stand for and what is it primarily used for?

RTK stands for Real Time Kinematic, and it is primarily used for achieving high-accuracy GPS positioning. This technique enhances the precision of satellite positioning systems by providing real-time corrections from a stationary reference station to a moving receiver. RTK can achieve centimeter-level accuracy, which is essential for applications such as surveying, agriculture, construction, and any field where precise location data is critical.

The method relies on the collection of data from multiple satellites and a reference station that communicates with the rover (the mobile receiving unit). By correcting the GPS signals for conditions that can distort them, such as atmospheric delays, RTK enables users to determine exact positions in real time, making it indispensable for tasks requiring high spatial accuracy. This capability is fundamental in GIS, particularly when creating detailed maps or conducting surveys that must meet strict accuracy standards.