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本文给出一种利用激光传感器与导航POS组成的车载三维激光数据快速采集系统,对铁道两侧的地形、地物进行三维扫描。将POS获取的系统位置与姿态信息和激光传感器获取的扫描距离与角度信息进行时间匹配,通过解算得到大地坐标下的三维激光点云坐标。改进基于投影密度的计算,进行地形、地物分离,并提取其特征信息,得到基本的三维激光模型。最后,针对数据预处理的结果,指出进一步研究的方向。
In this paper, a rapid acquisition system of on-board 3D laser data, which is composed of laser sensor and navigation POS, is presented. The topography and ground objects on both sides of the railway are scanned in 3D. The position information and attitude information obtained by the POS and the scanning distance and the angle information acquired by the laser sensor are time-matched, and the coordinate of the three-dimensional laser point cloud under the earth coordinate is obtained by solving. Improve the calculation based on the projection density, separate the topography and the ground objects, and extract the characteristic information to obtain the basic three-dimensional laser model. Finally, pointing out the direction of further research for the data preprocessing results.