How to achieve high-precision positioning of sub meter and centimeter level RTK

High precision RTK precise positioning is a professional technology for obtaining high-precision positioning information.
The abbreviation of Real Time Kinematic is actually a dynamic differential signal technology based on the global satellite positioning system, such as GPS, GLONASS, high-precision positioning technology, such as Galileo. The application signal of the GPS signal receiver is compared with the data signal of the reference station, and high-performance positioning information is calculated based on the differential signal.

Compared with traditional GPS positioning technology, high-precision RTK positioning can achieve centimeter level accuracy and is suitable for industries that require high-precision positioning information, such as land area measurement, building measurement, intelligent agriculture, etc.
Due to its high accuracy and practicality, high-precision RTK positioning has been widely used in industries such as airlines, ocean navigation, and robotics.

The working principle of high-precision RTK positioning is to use the power phase difference testing technology of GPS signals.
When the GPS data signal reaches the signal receiver, the data signal will undergo phase changes after the communication satellite is affected by various factors such as the Earth's atmosphere and road surface.
Without any impact, the power phase change of GPS signals can be detected, but due to various factors such as impact, a single signal receiver does not obtain high-performance phase difference information content.

The precise positioning of high-precision RTK involves placing a GPS signal receiver at a reference station in a known area, measuring the phase change between the reference station and the communication satellite, and obtaining position information content compared to the reference station.
At the same time, when a GPS signal receiver is placed on a mobile website that requires positioning and navigation, the GPS signal receiver in the mobile website communicates with the reference station to accurately measure the overall phase difference data obtained from the reference station and communicate it to the GPS signal receiver in the mobile website.

The GPS signal receiver in mobile websites can distinguish the phase angle between the reference station and the communication satellite from the phase angle between the mobile website and the communication satellite, thereby obtaining the phase angle of the mobile website compared to the reference station and obtaining high-performance positioning information.
By calculating various differential signals, high-precision RTK precise positioning can achieve high accuracy, generally at the centimeter level.

With the rapid development of technology, centimeter level high-precision RTK positioning technology is gradually being applied to intelligent handheld devices.
The duniot P2 intelligent 4G intercom phone is a smart terminal that integrates smartphones and walkie talkies.
It has functions such as public network intercom, DMR digital analog intercom, Tiantong satellite phone, and centimeter level high-precision RTK positioning.
Due to its small size, convenient portability, and complete functionality, it has a wide range of applications, such as construction, public security, intelligent manufacturing, warehousing and logistics, wilderness exploration, forest inspection, and shared service industries, providing efficient and safe protection for personnel management and safety control in various industries.