基于时空对象的高铁网络建模方法  

High-speed Network Modeling Method Based on Spatio-temporal Objects

作　　者：刘慧[1] 崔虎平[1] 韦原原 王明明 曾梦熊 LIU Hui;CUI Huping;WEI Yuanyuan;WANG Mingming;ZENG Mengxiong(Information Engineering University, Zhengzhou 450001, China)

机构地区：[1]信息工程大学,河南郑州450001

出　　处：《测绘科学技术学报》2021年第1期104-110,共7页Journal of Geomatics Science and Technology

基　　金：国家重点研发计划项目(2016YFB0502300)。

摘　　要：全空间信息系统将现实世界中的实体抽象为多粒度时空对象,并对其进行表达与分析,较传统地理信息系统来说更符合人类的认知。对高铁网络对象的基本特点及现有交通网络建模方法进行了分析,可知目前现有的建模方法难以支持具有动态性、关联性及多粒度特性的高铁网络对象的表达。依据多粒度时空对象建模思想,提出了一种适合高铁交通数据的全面表达与操作的建模方法;并对高铁网络对象化建模方法的优势及建模过程进行了探讨,设计了概念模型和逻辑模型;通过实例对提出的建模方法进行了验证,并采用可视化表达的方法检验高铁网络时空对象数据的有效性。实验结果表明,基于时空对象的建模方法能够较好描述高铁时空实体多维动态特征,能为后续高铁网络时空查询、分析提供支持。In pan-spatial information system,the entities in the real world are abstracted into multi-granularity spatio-temporal objects to be expressed and analyzed.Compared with traditional geographic information systems,pan-spatial information system is more in line with human cognition.The basic characteristics of high-speed rail network objects and the existing traffic network modeling methods are analyzed.It can be seen that the current existing modeling methods can hardly support the expression of high-speed rail network objects with dynamic,relevant and multi-granularity characteristics.Based on the idea of multi-granularity spatio-temporal object modeling,a modeling method suitable for the comprehensive expression and operation of high-speed rail traffic data is proposed in the paper,and the advantages and modeling process of the high-speed rail network object modeling method are discussed.Then the conceptual model and logical model are designed.Finally,the proposed modeling method is verified through instance,and confirmed the validity of high-speed rail network spatio-temporal object data by visual expression.Experimental results show that the modeling method based on spatio-temporal objects can describe the multi-dimensional dynamic characteristics of high-speed rail spatio-temporal entities better and provide support for the time-space query and analysis of high-speed rail network.

关 键 词：全空间信息系统 时空对象 高铁网络 数据模型设计 对象化建模 

分 类 号：P208[天文地球—地图制图学与地理信息工程]