Leica P40三维激光扫描仪在铁路定线中的应用

The Application of Leica P40 3D Laser Scanner in Railway Location

以Leica P40三维激光扫描仪为例,重点研究铁路定线中线提取、横断面测绘、土方量计算等内容,特别是陡峭的山体或堤坝等测绘人员无法到达的区域,通过与常规作业方法取得的成果进行比对,得出三维激光扫描用于铁路定线的平面精度能达到±5.6cm,高程精度能达到±7.5cm,满足铁路定线的测绘作业精度要求。具有一定的指导作用和参考价值。

Taking Leica P40 3D laser scanner as an example, this paper focuses on the extraction of railway alignment centerline,cross-sectional mapping, earthwork calculation and so on, especially in the areas which are inaccessible to surveyors such as steep mountains or dams. By comparing with the results obtained by conventional operation methods, it is concluded that the plane accuracy of the 3D laser scanning used in railwayalignment can reach ±5.6 cm, and the elevation accuracy can reach ±7.5 cm, which meets the precision requirements of railwayalignment surveyingand mapping. It hascertain guidingfunction and reference value.