Abstract
This article implies the results of attitude determination of land vehicle with high precision GNSS signal receivers. We analyze vehicle roll angle, heading and geometric centre determination possibility and precision. There are theoretical and practical results presented in the article. In aim to implement the practical part two precise GNSS receivers were installed on the roof of a vehicle. GNSS receivers use signals from GPS and GLONASS satellite systems and are supplemented with real time differential correction (RTK) from local network EUPOS-Riga. The given research has proven that it is possible to determine the road slope with accuracy 0.1 degree in static and 0.5 degree in dynamic mode.
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