What is RTK?

WongSR
2 min readDec 1, 2022

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The RTK recipient has entered the period of multi-satellite application in light of the Beidou satellite route framework, turning into the primary in the world, and a multi-framework and multi-recurrence RTK collector with totally free protected innovation privileges. The multi-satellite estimation recipient in light of the Beidou satellite route framework takes on the one of a kind kRTK center innovation and profoundly dependable transporter following calculation to adjust to different climate changes and furnish clients with excellent situating results.

Basic Introduction of RTK

RTK (Real-time kinematic, real-time dynamic) carrier phase difference technology is a difference method for real-time processing of carrier phase observations of two measurement stations, and sends the carrier phase collected by the reference station to the user receiver for difference calculation and coordinates. This is a new and commonly used satellite positioning measurement method. Previous static, fast static, and dynamic measurements required subsequent calculations to obtain centimeter-level accuracy. RTK is a measurement method that can obtain centimeter-level positioning accuracy in real time in the field. It uses the carrier phase dynamic real-time difference method, which is a major milestone in the application of GPS. Its appearance brings new measurement principles and methods for engineering stakeout, topographic mapping, and various control measurements, which greatly improves the operating efficiency.

What is the key technology of RTK

The key of RTK technology lies in data processing technology and data transmission technology. During RTK positioning, the base station receiver is required to transmit the observation data (pseudorange observation value, phase observation value) and known data to the rover station receiver in real time. The data volume comparison Generally, a baud rate of 9600 is required, which is not difficult to achieve on the radio.

With the continuous development of science and technology, rtk technology has developed from the traditional 1+1 or 1+2 to the wide-area differential system WADGPS. Some cities have established CORS systems, which greatly improves the measurement range of RTK. Of course, in data transmission great progress has also been made in terms of radio transmission to the current GPRS and GSM network transmission, which has greatly improved the efficiency and scope of data transmission. In terms of instruments, it not only has high precision but also is simpler and easier to operate than traditional RTK!

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