共查询到19条相似文献，搜索用时 93 毫秒
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地理空间数据交换中心是国家空间信息基础设施建设的核心内容之一。本文针对现阶段在我国建设省级地理空间数据交换中心的问题，分析了其基本建设内容，提出了需解决和应用的关键技术。 相似文献
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地理空间数据资源是国家重要的信息资源和战略资源,利用基础地理空间信息数据,集成和整合与地理空间位置有关的社会经济发展需要的信息数据对推进信息化建设、防止"信息孤岛"及重复投入具有十分重要的意义。本文论述了新疆地理空间数据资源共享交换平台的初期建设情况,通过该平台的建设可以实现全疆地理空间数据资源的跨部门共享交换和开发利用,对于加快新疆地理空间数据资源开放共享机制建立健全的步伐有积极作用。 相似文献
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面向应用的地理空间数据整合方法研究 总被引：2，自引：1，他引：1
本文基于省级地理空间数据的建设现状,从应用的角度,对地理空间数据的整合提出了基于基础地理数据的数据整合、基于专业GIS应用系统的数据整合和基于SOA的数据整合三种方法,并对三种空间数据整合方法的各自特点进行了总结. 相似文献
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基于ArcGIS的省级基础地理信息数据库系统研究 总被引：1，自引：0，他引：1
基础地理信息系统是国家空间数据基础设施(NSDI)的核心部分,省级基础地理信息数据包括1∶10 000,1∶50 000,1∶250 000等不同比例尺4D数据。其数据量巨大,数据要素复杂,数据应用广泛。合理高效地建立省级基础地理信息数据库系统是省级测绘地理信息局信息化建设的关键。本文探讨了ArcSDE结合Oracle海量空间数据的存储与管理,以及基于ArcGIS Engine的省级基础地理信息数据库系统的实现及其功能与业务应用,阐述了系统的技术路线及业务流程,为省级测绘部门建立基础地理信息数据库提供借鉴。 相似文献
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应荷香 《测绘与空间地理信息》2012,(7):41-43
基于浙江省地理空间数据交换和共享平台的多比例尺空间数据库的建设和频繁更新工作实践,突破传统的数据库更新模式,介绍利用地理实体编码、变化发现等实现多尺度表达空间数据联动更新的关键技术。 相似文献
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近年来,地理空间数据共享和交换的建设在全国范围内迅速开展,而相应的标准尚未完全建立或仍未完全满足需求,本文在分析地理空间数据共享和交换标准体系构建的原则及意义后,提出了其一般组成内容,旨在为建立地理空间数据共享和交换的标准规范提供前期研究,进而规范地理空间数据共享和交换的实现。 相似文献
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Jack Dangermond 《地球空间信息科学学报》2020,23(1):1-9
ABSTRACTMany visions for geospatial technology have been advanced over the past half century. Initially researchers saw the handling of geospatial data as the major problem to be overcome. The vision of geographic information systems arose as an early international consensus. Later visions included spatial data infrastructure, Digital Earth, and a nervous system for the planet. With accelerating advances in information technology, a new vision is needed that reflects today’s focus on open and multimodal access, sharing, engagement, the Web, Big Data, artificial intelligence, and data science. We elaborate on the concept of geospatial infrastructure, and argue that it is essential if geospatial technology is to contribute to the solution of problems facing humanity. 相似文献
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A geospatial cyberinfrastructure is needed to support advanced GIScience research and education activities. However, the heterogeneous and distributed nature of geospatial resources creates enormous obstacles for building a unified and interoperable geospatial cyberinfrastructure. In this paper, we propose the Geospatial Service Web (GSW) to underpin the development of a future geospatial cyberinfrastructure. The GSW excels over the traditional spatial data infrastructure by providing a highly intelligent geospatial middleware to integrate various geospatial resources through the Internet based on interoperable Web service technologies. The development of the GSW focuses on the establishment of a platform where data, information, and knowledge can be shared and exchanged in an interoperable manner. Theoretically, we describe the conceptual framework and research challenges for GSW, and then introduce our recent research toward building a GSW. A research agenda for building a GSW is also presented in the paper. 相似文献
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江苏省地图库系统是江苏省地理空间信息基础框架建设的重要内容之一,系统建立的统一、高效的软件平台对省级基础测绘DLG成果资料进行科学有效的管理,方便快捷地实现了测绘资料的检索查询、数据整理、资料分发等业务的流程化和信息化管理,为省级地理空间信息基础框架建设奠定了基础。 相似文献
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J. L. Gonzalez-Compean Victor J. Sosa-Sosa Arturo Diaz-Perez Jesus Carretero Ricardo Marcelin-Jimenez 《International Journal of Digital Earth》2018,11(7):730-751
Earth observation satellites produce large amounts of images/data that not only must be processed and preserved in reliable geospatial platforms but also efficiently disseminated among partners/researchers for creating derivative products through collaborative workflows. Organizations can face up this challenge in a cost-effective manner by using cloud services. However, outages and violations of integrity/confidentiality associated to this technology could arise. This article presents FedIDS, a suite of cloud-based components for building dependable geospatial platforms. The Fed component enables organizations to build shared geospatial data infrastructure through federation of independent cloud resources to withstand outages, whereas IDS avoids violations of integrity/confidentiality of images/data in sharing information and collaboration workflows. A FedIDS prototype, deployed in Spain and Mexico, was evaluated through a study case based on a satellite imagery captured by a Mexican antenna and another based on a satellite imagery of a European observation mission. The acquisition, storage and sharing of images among users of the federation, the exchange of images between Mexican and Spanish sites and outage scenarios were evaluated. The evaluation revealed the feasibility, reliability and efficiency of FedIDS, in comparison with available solutions, in terms of performance, storage consume and integrity/confidentiality when sharing images/data in collaborative scenarios. 相似文献
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针对地理空间数据交换和共享平台的地名数据日益增多及不同部门的数据差异所造成的地名检索效率低下问题,该文分析了平台中地名的表达特征,设计了面向地名信息的多级索引库组织方式,提出了地名特征词典的构建方法,设计并开发原型系统,实现了基于Lucene和地名特征词的检索框架。实验表明:多级索引通过基础索引、特征索引、分类索引三者联动的方式降低了地名检索的复杂度,具有较高的检索效率和准确度,应用于浙江省地理空间数据交换和共享平台取得了良好的效果。 相似文献
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基础地理数据具有空间载体和知识存量两大作用。以往人们主要关注其空间载体作用，研发和提供了丰富多样的基础地理数据服务与信息服务，但对其知识存量挖掘不够，提供的地理空间知识服务极少。近年来，“数据海量，信息爆炸，知识难求”现象愈加突出，从地理数据信息服务走向知识服务势在必行，已成为测绘科技转型升级的一项重要任务。借鉴知识图谱的最新研究进展，讨论了基础地理数据、信息和知识的基本内涵，提出了以结构化和关联化为重要特征的基础地理知识服务总体思路，分析了由此带来的4方面问题；继而从领域知识体系构建、关键技术、应用服务3个方面讨论了基础地理知识服务的研究方向与重点；以GlobeLand30知识服务为例，介绍了初步研究进展。 相似文献
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Cloud computing has been considered as the next-generation computing platform with the potential to address the data and computing challenges in geosciences. However, only a limited number of geoscientists have been adapting this platform for their scientific research mainly due to two barriers: 1) selecting an appropriate cloud platform for a specific application could be challenging, as various cloud services are available and 2) existing general cloud platforms are not designed to support geoscience applications, algorithms and models. To tackle such barriers, this research aims to design a hybrid cloud computing (HCC) platform that can utilize and integrate the computing resources across different organizations to build a unified geospatial cloud computing platform. This platform can manage different types of underlying cloud infrastructure (e.g., private or public clouds), and enables geoscientists to test and leverage the cloud capabilities through a web interface. Additionally, the platform also provides different geospatial cloud services, such as workflow as a service, on the top of common cloud services (e.g., infrastructure as a service) provided by general cloud platforms. Therefore, geoscientists can easily create a model workflow by recruiting the needed models for a geospatial application or task on the fly. A HCC prototype is developed and dust storm simulation is used to demonstrate the capability and feasibility of such platform in facilitating geosciences by leveraging across-organization computing and model resources. 相似文献
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随着对地立体观测体系的建立,遥感大数据不断累积。传统基于文件、景/幅式的影像组织方式,时空基准不够统一,集中式存储不利于大规模并行分析。对地观测大数据分析仍缺乏一套统一的数据模型与基础设施理论。近年来,数据立方体的研究为对地观测领域大数据分析基础设施提供了前景。基于统一的分析就绪型多维数据模型和集成对地观测数据分析功能,可构建一个基于数据立方的对地观测大数据分析基础设施。因此,本文提出了一个面向大规模分析的多源对地观测时空立方体,相较于现有的数据立方体方法,强调多源数据的统一组织、基于云计算的立方体处理模式以及基于人工智能优化的立方体计算。研究有助于构建时空大数据分析的新框架,同时建立与商业智能领域的数据立方体关联,为时空大数据建立统一的时空组织模型,支持大范围、长时序的快速大规模对地观测数据分析。本文在性能上与开源数据立方做了对比,结果证明提出的多源对地观测时空立方体在处理性能上具有明显优势。 相似文献