同济大学学报（自然科学版）2001，Vol.29Issue(4)：410-415,6.
一种新的线性参照系统数据模型
Development of a New Linear Referencing System Data Model
摘要
Abstract
In this paper, a new data model for a linear referencing system in geographic information systems for transportation (GIS-T) is presented. The newly developed data model has the advantage of generality and high precision. The conceptual data model of a linear referencing system is firstly analyzed, and then two key problems constructing a linear referencing model are investigated. The development of a road geometric featureoriented linear referencing datum is presented with least square adjustment method. An improved road curve feature-oriented dynamic segmentation model is further presented. Based on the theoretical studies, a GIS-T prototype system is developed. The implementation of the model in the prototype system is illustrated to support highway accident management and analysis.关键词
线性参照系统/线性参照基准/动态分段/平差模型/交通运输地理信息系统分类
交通工程引用本文复制引用
童小华,杨东援,刘大杰..一种新的线性参照系统数据模型[J].同济大学学报（自然科学版）,2001,29(4):410-415,6.
