A kind of rtk Beidou positioning system and method based on ad hoc network

Abstract

The invention discloses an Ad-Hoc network mode-based RTK (Real-Time Kinematic) Beidou positioning system, comprising at least three Beidou positioning base stations, at least one Beidou positioning movement station and a plurality of wireless communication modules. Each Beidou positioning base station is connected and communicated with one wireless communication module. The Beidou positioning movement station is connected and communicated with one wireless communication module. The plurality of wireless communication modules form an Ad-Hoc network. Each Beidou positioning base station generates base station positioning data and sends the base station positioning data to other wireless communication modules in the Ad-Hoc network through the corresponding wireless communication module. The Beidou positioning movement station generates movement station positioning data, receives base station positioning data, and timely solves virtual base station positioning data of a virtual base station according to the base station positioning data and the movement station positioning data. The Beidou positioning movement station performs real-time solution to obtain high-precision Beidou positioning RTK coordinates. The invention also discloses an Ad-Hoc network mode-based RTK Beidou positioning method.

Description

technical field [0001] The invention belongs to the technical field of communication and positioning, and in particular relates to an ad hoc network-based RTK Beidou positioning system and method. Background technique [0002] The existing high-precision and large-scale positioning network RTK technology GPS system consists of a base station, a data processing center, a data communication link and a mobile station. In the existing RTK system, the coordinates of the mobile station correct its own coordinates according to the VRS 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 fixed base stations are continuously transmitted to the data processing center through the communication link, and the data processing center will perform quality inspection on the data of each fixed base station, remove large errors in the data and correct cycle slips, and c...

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

This approach will have obvious defects when the number of visits is large: because two-way communication is required, the communication speed is slow, and all GPS mobile stations will access the server of the data processing center, which will easily cause communication interruption or blockage

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