集成RTK的三维激光扫描技术测量地形的方法

Topographic Mapping Using 3D Laser Scanning Technology Integrated with RTK

针对标靶扫描、全站仪辅助等因素造成扫描作业过程的复杂繁琐,提出了集成RTK的三维激光扫描技术测量地形的整体方案。采用网络RTK同轴同步测量扫描站坐标;两级拼接策略:地物点粗拼接与基于面搜索的ICP精确配准;采用测块四角或周边RTK点进行点云绝对定向;采用自主研发的点云测图平台进行地形测绘。通过几种典型地形的实验验证,该方案使得扫描作业效率提高了约5倍,与现行全野外数字测图方法比较,作业效率提高了约3倍。

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.