RTK: (Real - time kinematic) real-time dynamic difference method. This is a new commonly used GPS measurement method. Previous static, fast static and dynamic measurements require post-calculation to achieve centimeter-level accuracy, while RTK is a measurement method that can obtain centimeter-level positioning accuracy in real time in the field.
It adopts the carrier phase dynamic real-time differential method, which is a major milestone of GNSS application. Its appearance is engineering lofting, topographic mapping, and various control measurements bring new dawn, greatly improving the efficiency of field operations.