Compared with cors system, what are the limitations of traditional rtk survey technology?

The limitation of traditional RTK mainly lies in the change of control range and accuracy, because traditional RTK adopts single base station mode. At first, the control range of a single base station is limited, and the farther away from the base station, the lower the accuracy. CORS has established many base stations in a large area, such as a city and a province, to provide basic data. By simulating and calculating the differential signal provided to the mobile station by professional software, the mobile station can maintain consistent high accuracy in the whole large-scale measurement area.