Beidou+5G-Based Plug-In Data Platform to Enhance the Accuracy of Smart Terminal App Applications

Real-time high-precision positioning and navigation of smart terminals has a huge potential demand in the field of positioning, but for reasons of cost and power consumption, its low-cost global navigation satellite system (GNSS) positioning chips and antennas carrying received satellite observation data are of poor quality, prone to circumferential jumping, and seriously affected by multi-path effects, making it difficult to meet the requirements of high-precision positioning. There is a huge potential demand for real-time high-precision positioning and navigation for smart terminals in the field of positioning. However, for reasons of cost and power consumption, the low-cost global navigation satellite system (GNSS) positioning chips and antennas on which they are mounted receive poor quality satellite observation data, which are prone to circumferential jumping and are seriously affected by multi-path effects, making it difficult to achieve the requirements of high-precision positioning. Meanwhile, with the arrival of 5th Generation Mobile Communication Technology (5G) communication technology, its characteristics of low latency, large bandwidth and large number of connections make it easier to transmit a large amount of GNSS observation data in real time. In order to modify certain smart terminals to meet the demand of high accuracy, combined with 5G high-speed network, A method was proposed to build an plug-in data platform using BeiDou high-precision board + 5G and Bluetooth technology to enhance the accuracy of smart terminal Application (APP) applications. The plug-in data platform is divided into a server module and a user terminal module. The server module continuously receives real-time satellite observation data from the base station. The user terminal module mainly receives the satellite observation data by using the Unicorecomm UB4B0M board, outputs the data from the serial port through the board backplane, then transmits the data to the Arduino microcontroller via the serial to Transistor-Transistor Logic (TLL) module, and finally sends the data to the intelligent terminal APP by the HC-05 Bluetooth module; after the terminal receives the data, the terminal APP submits the time stamp to the server, which matches the satellite observation data of the base station and sends it back to the terminal APP via 5G high-speed network in real time for real-time carrier phase difference calculation. The experimental verification shows that the intelligent terminal plug-in data platform operates stably and correctly, and can achieve centimeter-level navigation and positioning accuracy, which can provide technical reference for the transformation of existing low-precision intelligent terminals and the development of future high-precision intelligent terminals.