摘要
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。
This paper presents a 3D laser scanning rapid data acquisition system with the laser sensor and POS, which is designed for 3D scanning the both sides of railway. The 3D laser point cloud is attained on the Geodetic coordinate for combining the location and stance information from POS with the range and angle information from laser sensor on the homologous time. Based on the computing of projection density, it separates the terrain and the objects, extracts the feature information, and gains the basic 3D laser model. Finally, this paper points out the direction of further study with the primary result of the data processing.
出处
《工程勘察》
CSCD
北大核心
2009年第11期61-66,共6页
Geotechnical Investigation & Surveying
基金
国家"十一五"863计划地球观测与导航技术领域项目"车载多传感器集成关键技术研究(2006AA122324)
关键词
激光点云
车载
三维扫描
铁路测量
投影密度
laser points cloud
vehicle-borne
3D scanning
railway survey
projection density
