Abstract: Due to target scanning and total station aided measuring, the process becomes so complex. Therefore, the topographic mapping solution using 3D laser scanning technology integrated with RTK is introduced in this paper. The position of scanning position is measured synchronously by coaxial network-RTK; two level registration strategies are including coarse registration by corresponding points and ICP registration by polygon search; the peripheral RTK points of survey block is utilized to absolute orientation; the platform is developed for topographic mapping. Topographic Mapping Experiment was made with typical features terrain, the scanning efficiency is improved by about 5 times, and the working efficiency is improved by about 3 times by comparing with traditional digital mapping.

Key words: topographic mapping, 3D laser scanning technology, point cloud, RTK, ICP