Shenzhen PDS Technology Co.,Ltd.
Shenzhen PDS Technology Co.,Ltd.

Unpacking RTK: The Revolution in Precision Navigation

RTK stands for Real-time Kinematics, which is another technology to improve the precision of GPS positioning measurement. However, it is one of the most difficult to understand and implement technologies.

The Advantages of RTK Mobile Data Terminal

Traditional GPS measurement methods such as static, rapid static, and kinematic require post-processing to achieve centimeter-level accuracy. However, RTK mobile data terminal for sale can achieve centimeter-level positioning accuracy in real-time in the field. It uses Carrier Phase Dynamic Real-time Differential method, which is a major milestone in GPS applications. Its introduction brings new horizons for engineering layout, terrain mapping, and various control measurements, greatly improving infield work efficiency.

The Application of RTK Mobile Data Terminal Technology

High-precision GPS fleet management & vehicle tracking requires the use of Carrier Phase measurements. RTK mobile data terminal spositioning technology is based on Carrier Phase observation values and is a real-time dynamic positioning technology that can provide three-dimensional positioning results of the measurement station in a specified coordinate system in real-time with centimeter-level accuracy. In RTK operation mode, the base station sends its observations and station coordinates to the rover via a data link. The rover not only receives data from the base station via the data link but also collects GPS observation data and performs real-time processing of differential observation values in the system, providing centimeter-level positioning results in less than a second.

The rover can be in a stationary or moving state, and can be initialized at a fixed point before entering dynamic operation, or can start up directly in dynamic conditions and complete search and resolution of cycle ambiguities in dynamic environments. After fixing the integer ambiguity at the end of the cycle, real-time processing can be performed for each epoch as long as four or more satellite phase observation values are tracked and the necessary geometric shapes are maintained.

In the realm of precision navigation and mapping, one acronym stands out for its significance and impact: RTK. Standing for Real-Time Kinematic, RTK technology represents a pivotal advancement in the accuracy of GPS systems. This article delves into the essence of RTK, exploring its functionality, benefits, and diverse applications that have made it an indispensable tool across various industries.

The Essence of RTK

At its core, RTK is a satellite navigation technique used to enhance the precision of position data derived from satellite-based positioning systems (like GPS). It achieves this by using a fixed base station that broadcasts the difference between the positions indicated by the satellite systems and the known fixed position. This information is then used by a mobile receiver to correct its position, achieving accuracy down to the centimeter level in real-time.

How RTK Works

RTK operates by processing the signals received from a minimum of three satellites along with a correction signal from a base station. The base station, positioned at a known location, continuously monitors the signals from the satellites and calculates correction factors. These factors are instantly transmitted to the mobile receiver, which applies them to its own satellite data to achieve highly precise location information.

The Benefits of RTK

The primary advantage of RTK is its remarkable accuracy. Traditional GPS systems offer location precision within meters, but RTK technology tightens this range to just centimeters. This leap in accuracy opens up new possibilities for applications where precision is critical.

Moreover, RTK provides this high level of accuracy in real-time, which is crucial for tasks that require immediate and precise location data, such as navigating autonomous vehicles or conducting real-time field mapping.

Applications of RTK

RTK technology has found its way into a myriad of applications, revolutionizing industries with its precision.

  • Agriculture: Farmers use RTK systems for precision farming practices, such as planting crops in perfectly straight lines and applying fertilizers or pesticides with minimal waste.

  • Construction: In construction, RTK enables precise surveying and mapping, ensuring structures are built exactly to specification and in the right location.

  • Autonomous Vehicles: Self-driving cars and drones rely on RTK for navigation, ensuring they can operate safely and efficiently by knowing their exact position at all times.

  • Geographic Information Systems (GIS): Professionals in GIS use RTK to collect highly accurate data for mapping and analysis purposes.


RTK technology has transformed the landscape of precision navigation and mapping, offering unparalleled accuracy in real-time. Its applications span across various sectors, making it a cornerstone technology in modern agriculture, construction, autonomous navigation, and geographic information systems. As technology continues to evolve, the potential for RTK to further revolutionize these fields remains vast, promising even greater efficiency and precision in the future.

RTK MDT mobile data terminal technology's key lies in data processing and data transmission technology. During RTK positioning, the base station receiver needs to transmit observation data (pseudo-range observation values, phase observation values) and known data to the rover receiver in real-time. The data transfer rate required is generally 9600 baud, which is easily achieved on a wireless link.