Relative Positioning of Autonomous Ground Vehicles Combining Multi-GNSS (GPS-L1, GLONASS-G1 and BDS-B1) Observations
Keywords:
Autonomous Ground Vehicles, GNSS, relative positioningAbstract
To perform to their full capacity, Autonomous Ground Vehicles (AGV) require a powerful, dependable, and precise navigation system. Optical, inertial, signals-of-opportunity (SOPs), standalone and augmented Global Navigation Satellite System (GNSS), and other modern technologies are used to construct such a system. In fact, the AGV navigation system heavily relies on the usage of GNSS. The key threats or errors of GNSS codHane and carrier phase observations include clock error, orbit error, ionospheric delay, and tropospheric delay. By minimising the errors and employing a relative positioning approach, an AGV may be positioned precisely. When using carrier phase observations, relative location precision up to the cm level is possible. The accuracy of relative position using GPS-L1, GLONASS-G1, BDS-B1, and GPS/BDS/GLONASS integrated system signals for AGV applications is therefore examined in this study work. A software-based framework is also developed to analyse the data and produce relative positioning results.
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