COMPARISON OF 3D POINT CLOUDS ACQUIRED BY MMS DURING STRAIGHT AHEAD AND TURNING AND EMPIRICAL VERIFICATION OF THE INFLUENCE OF GNSS COMBINATION

Abstract

 Dynamic maps are based on high-precision 3D maps created using 3D point cloud data acquired by MMS equipped with GNSS. In the future, it is planned to develop dynamic maps for general roads where vehicles turn frequently, such as intersections, and there is concern that the reliability of the point cloud data will deteriorate. In this study, we compared the point cloud accuracy between straight sections and turning sections, and quantitatively verified the effect of the combination of GPS, QZSS, GLONASS, and Galileo among GNSS on the accuracy of 3D point clouds acquired by MMS. The results showed that the point cloud accuracy was lower in the turning area than in the straight area. The horizontal accuracy of the point cloud was not significantly affected by the combination of satellites, while the height accuracy was more stable when Galileo was used.