[1]郭同德,杜云海,卢艳..GIS中道路曲线的整体误差模型与试验研究[J].郑州大学学报(工学版),2004,25(02):94-96.[doi:10.3969/j.issn.1671-6833.2004.02.023]
　GUO Tongde,Du Yunhai,Lu Yan.Overall error model and experimental study of road curve in GIS[J].Journal of Zhengzhou University (Engineering Science),2004,25(02):94-96.[doi:10.3969/j.issn.1671-6833.2004.02.023]

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GIS中道路曲线的整体误差模型与试验研究()

分享到：

《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:

25

期数:

2004年02期

页码:

94-96

栏目:

出版日期:

1900-01-01

文章信息/Info

Title:

Overall error model and experimental study of road curve in GIS

作者:

郭同德; 杜云海; 卢艳.

郑州大学环境与水利学院,河南,郑州,450002, 郑州大学工程力学系,河南,郑州,450002

Author(s):

GUO Tongde; Du Yunhai; Lu Yan

关键词:

曲线;  随机过程;  均方积分;  误差函数;  总误差

Keywords:

curves;  Stochastic processes;  mean squared integral;  error function;  Total error

DOI:

10.3969/j.issn.1671-6833.2004.02.023

文献标志码:

A

摘要:

以随机过程的均方微积分为工具描述了曲线要素的整体误差,用过程的数字特征定义了曲线整体误差的具体指标,分析了误差指标的几何意义.根据过程模型设计了曲线整体误差的扫描数字化试验,用三次参数样条高密度地插值出一条道路曲线,对道路中心线进行反复的采集,经转换获取了随机过程的100条样本曲线,在此基础上估计出了误差指标值,讨论了过程的平稳性,分析了扫描数字化中系统误差的成因以及相应的削减系统误差的方法.试验数据大体上代表了道路中心线扫描数字化的精度.

Abstract:

The overall error of curve elements is described by means of mean square calculus of stochastic processes, the specific index of overall error of curve is defined with the numerical characteristics of the process, and the geometric significance of error indicators is analyzed. According to the process model, the scanning digitization test of the overall error of the curve is designed, a road curve is interpolated with high density by tertiary parameter spline, the road centerline is repeatedly collected, and 100 sample curves of the random process are obtained through conversion, on this basis, the error index value is estimated, the smoothness of the process is discussed, and the causes of systematic error in scanning digitization and the corresponding methods to reduce systematic error are analyzed. The test data generally represents the accuracy of road centerline scanning digitization.

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