北斗网格码:数字孪生城市CIM时空网格框架  

Beidou Grid Code:CIM spatio-temporal grid framework for digital twin cities

作　　者：李林 程承旗[2,3] 任伏虎[1,3] LI Lin;CHENG Chengqi;REN Fuhu(Beidou Fuxi Technology Co.,Ltd.,Beijing 102218,China;College of Engineering,Peking University,Beijing 100871,China;Peking University Collaborative Innovation Center for Geospatial Big Data,Beijing 100871,China)

机构地区：[1]北京北斗伏羲科技有限公司,北京102218 [2]北京大学工学院,北京100871 [3]北京大学时空大数据协同创新中心,北京100871

出　　处：《信息通信技术与政策》2021年第11期1-5,共5页Information and Communications Technology and Policy

摘　　要：数字孪生城市已成为新型智慧城市建设的主流技术路线与发展目标。数字孪生城市的核心是城市信息模型(City Information Modeling,CIM)。传统的GIS+BIM的建模方法存在明显的局限:面向对象的数据组织方式会因对象本身的纷繁复杂和对象ID的私有定义而难以解决数据组织汇聚的问题。北斗网格码技术(包括剖分时间码)提供了一个时空网格框架,可构建地球全域空间数字孪生网格数据模型,其实质是一个基于时空编码的开放性大数据架构,可通过网格关联组织城市多源异构时空数据,支撑数字孪生城市CIM建模。具体建模过程包括时空网格编码、网格关联数据、网格数据加载、数据驱动模型4个步骤。基于北斗网格码的时空网格框架对于CIM平台具有重要的赋能价值。Digital twin cities have become the mainstream technical route and development goal of the construction of new smart cities.The core of digital twin city is the City Information Model(CIM).The traditional“GIS+BIM”modeling method has obvious limitations:the object-oriented data organization method is difficult to solve the problem of data organization and aggregation due to the complexity of the object itself and the private definition of object ID.Beidou Grid Code technology(including Beidou Split Time Code)provides a spatiotemporal grid framework,which can build the global spatial digital twin grid data model.Its essence is an open big data architecture based on spatiotemporal coding,which can organize urban multi-source heterogeneous spatiotemporal data through grid association and support the CIM modeling of digital twin cities.The specific modeling process includes four steps:spatio-temporal grid coding,grid associated data,grid data loading and data-driven model.The spatio-temporal grid framework based on Beidou Grid Code has important enabling value for CIM platform.

关 键 词：时空网格框架 城市信息模型 数字孪生城市 

分 类 号：TU98[建筑科学—城市规划与设计] P208[天文地球—地图制图学与地理信息工程]