RTK (Real-Time Kinematic) Beidou positioning system and method based on Beidou short message mode

Abstract

The invention discloses a RTK (Real-Time Kinematic) Beidou positioning system based on a Beidou short message mode. The RTK Beidou positioning system comprises at least one Beidou positioning base station, at least one Beidou positioning movement station, at least one Beidou director and at least one Beidou communication module. The Beidou positioning base station is connected and communicated with the Beidou director. The Beidou positioning movement station is connected and communicated with the Beidou communication module. The Beidou director and the Beidou communication module are communicated through satellite forwarding. The Beidou positioning base station generates Beidou base station positioning information and generates a Beidou short message. The Beidou director sends an announcement call to the Beidou positioning movement station via a Beidou satellite in a short message mode. The Beidou positioning movement station generates Beidou movement station positioning information, receives the Beidou short message, performs analysis to obtain the Beidou base station positioning information, performs real-time solution to obtain virtual base station positioning information, and performs real-time solution to obtain high-precision Beidou positioning RTK coordinates. The invention discloses an RTK Beidou positioning method based on the Beidou short message mode.

Description

technical field [0001] The invention belongs to the technical field of communication and positioning, and in particular relates to an RTK Beidou positioning system and method based on Beidou short message mode. Background technique [0002] The existing high-precision and large-scale positioning network RTK (Real-time Kinematic, real-time dynamic positioning) technology GPS system consists of base stations, data processing centers, data communication links and mobile stations. In the existing RTK system, the coordinates of the mobile station correct its own coordinates according to the VRS (Virtual Reference Station, virtual reference base station) carrier phase observation value and the GPS satellite information received by the mobile station, so as to improve the positioning accuracy. The GPS observation satellite data of the fixed base stations are continuously transmitted to the VRS data processing center through the communication link. The data processing center will pe...

AI Technical Summary

Problems solved by technology

[0003] Potential security issues: Since the calculation and acquisition of RTK data of high-precision positioning data must rely on the data processing center to transmit through the public cellular mobile communication network, if the mobile communication network or the server of the data processing center fails or is paralyzed, it will cause The transmission of VRS data is interrupted; the GPS mobile station must send its own GPS coordinates and other data to the data processing center. If the data is maliciously intercepted and tampered with in the middle or the data processing center encounters malicious intrusion, the location of the GPS mobile station will be exposed. Not applicable Occasions with high security requirements

Because two-way communication is required, when there are a large number of GPS mobile stations, all GPS mobile stations will access the server in the data processing center, and the number of visits is large, which may easily cause interruption or blockage of server-side communication

[0010] ●Because the number of base stations of cellular mobile communication operators in some areas is small or the capacity is limited, if the number of GPS mobile stations in this area is large, it is easy to cause communication congestion and RTK data loss

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