What is RTK technology?
Conventional GPS measurement methods, such as static, fast static, and dynamic measurements, need to be solved afterwards to obtain centimeter-level accuracy, and RTK is a measurement method that can obtain centimeter-level positioning accuracy in the field in real time. It uses carrier phase dynamic real-time The differential (Real-TImekinemaTIc) method is a major milestone in the application of GPS. Its emergence has brought new dawn to engineering lofting, topographic mapping, and various control measurements, which has greatly improved the efficiency of field operations.
Carrier phase observations must be used for high-precision GPS measurement. RTK positioning technology is a real-time dynamic positioning technology based on carrier phase observations. It can provide real-time 3D positioning results of the measurement station in a specified coordinate system and achieve centimeter-level accuracy. In RTK operation mode, the base station transmits its observation value and station coordinate information to the rover through the data link. The rover not only receives the data from the reference station through the data link, but also collects the GPS observation data, and composes the differential observation value in the system for real-time processing, and at the same time gives the centimeter-level positioning result, which takes less than one second. The rover is in a static state or in a moving state; it can be initialized at a fixed point before entering a dynamic operation, or it can be directly turned on under dynamic conditions, and the search and solution of weekly ambiguity can be completed in a dynamic environment. After the knowledge solution is fixed throughout the weekend, each epoch can be processed in real time. As long as the tracking of the phase observations of more than four satellites and the necessary geometry can be maintained, the rover can always give centimeter-level positioning results.
The key of RTK technology is 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 receiver in real time. Large, generally require a baud rate of 9600, which is not difficult to achieve on the radio.
Conventional GPS measurement methods, such as static, fast static, and dynamic measurements, need to be solved afterwards to obtain centimeter-level accuracy, and RTK is a measurement method that can obtain centimeter-level positioning accuracy in the field in real time. It uses carrier phase dynamic real-time The differential (Real-TImekinemaTIc) method is a major milestone in the application of GPS. Its emergence has brought new dawn to engineering lofting, topographic mapping, and various control measurements, which has greatly improved the efficiency of field operations.
Carrier phase observations must be used for high-precision GPS measurement. RTK positioning technology is a real-time dynamic positioning technology based on carrier phase observations. It can provide real-time 3D positioning results of the measurement station in a specified coordinate system and achieve centimeter-level accuracy. In RTK operation mode, the base station transmits its observation value and station coordinate information to the rover through the data link. The rover not only receives the data from the reference station through the data link, but also collects the GPS observation data, and composes the differential observation value in the system for real-time processing, and at the same time gives the centimeter-level positioning result, which takes less than one second. The rover is in a static state or in a moving state; it can be initialized at a fixed point before entering a dynamic operation, or it can be directly turned on under dynamic conditions, and the search and solution of weekly ambiguity can be completed in a dynamic environment. After the knowledge solution is fixed throughout the weekend, each epoch can be processed in real time. As long as the tracking of the phase observations of more than four satellites and the necessary geometry can be maintained, the rover can always give centimeter-level positioning results.
The key of RTK technology is 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 receiver in real time. Large, generally require a baud rate of 9600, which is not difficult to achieve on the radio.
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