摘要
三维激光扫描点转换到工程测量坐标系时,误差来源多、类型多,目前尚没有一套完整的精度评定方法体系。本文对误差源进行分析,将其误差归纳为标准控制点测量误差、扫描误差和坐标转换模型误差三大类;探讨了扫描点在工程测量坐标系中的位置误差指标体系,给出了体系中各项精度指标的计算方法,为三维激光扫描测量在不同的应用中提供一套系统的精度评定参考。
When points from three laser scanning are transformed into specified engineering coordinate system,the error source will come in many ways,which results in different kinds of errors. And there is no systematic and complete accuracy evaluation system yet. Analyzing the error source of three laser scanning,this paper classified errors into three categories： errors from standard control points measuring,errors from scanning and coordinate transformation model errors. The position precision system of scanned points in engineering coordinate system is discussed and correspondingly,methods of calculation of each accuracy specifications are listed. And the whole accuracy evaluation system will provide a reference of accuracy evaluation for three laser scanning surveying.
出处
《测绘与空间地理信息》
2015年第11期120-122,128,共4页
Geomatics & Spatial Information Technology
关键词
扫描点
误差源
精度体系
位置误差指标
scanned points
error source
precision system
position error specifications
