This position paper is the outcome of a brainstorming workshop organised by the International Society for Digital Earth(ISDE)in Beijing in March 2011.It argues that the vision of Digital Earth(DE)put forward by Vice-P...This position paper is the outcome of a brainstorming workshop organised by the International Society for Digital Earth(ISDE)in Beijing in March 2011.It argues that the vision of Digital Earth(DE)put forward by Vice-President Al Gore 13 years ago needs to be re-evaluated in the light of the many developments in the fields of information technology,data infrastructures and earth observation that have taken place since.The paper identifies the main policy,scientific and societal drivers for the development of DE and illustrates the multi-faceted nature of a new vision of DE grounding it with a few examples of potential applications.Because no single organisation can on its own develop all the aspects of DE,it is essential to develop a series of collaborations at the global level to turn the vision outlined in this paper into reality.展开更多
The Earth and Space Sciences Informatics division of European Geosciences Union(EGU)and the Open Geospatial Consortium jointly organised a special event entitled:‘Implementation of international geospatial standards ...The Earth and Space Sciences Informatics division of European Geosciences Union(EGU)and the Open Geospatial Consortium jointly organised a special event entitled:‘Implementation of international geospatial standards for earth and space sciences event’at the EGU General Assembly meeting held in Vienna,April 2009.The event objectives included:(a)to discuss the integration of information systems from different geosciences disciplines;(b)to promote and discuss the present process to scale from specific and monolithic systems towards independent and modular enabling infrastructuresforming an earth system science(ESS)infrastructure;and(c)to show some of the latest advances in implementing open standards.This manuscript introduces the event motivations and describes the abstract and holistic framework,which can be used to situate the topics and the developments presented by the event speakers.This manuscript introduces important,and relatively new technologies to build a multi-disciplinary geosciences information system:the System of Systems approach and the Model Driven Approach.To achieve that,three important information infrastructure categories are recognised:(a)ESS information infrastructure;(b)geospatial information infrastructure;and(c)distributed information infrastructure.Digital Earth should support the discussed framework to accelerate information transfer from theoretical discussions to applications,in all fields related to global climate change,natural disaster prevention and response,new energy-source development,agricultural and food security,and urban planning and management.展开更多
Digital Earth is an interdisciplinary field involving space technology,information technology,and geoscience.This article introduces the land observation satellite system of China and discusses the requirements for sa...Digital Earth is an interdisciplinary field involving space technology,information technology,and geoscience.This article introduces the land observation satellite system of China and discusses the requirements for satellite payloads in terms of spatial,temporal,and spectral resolution to establish a Digital Earth.The applications of land satellites under the framework of Digital Earth are introduced from the perspectives of data support,special subject services,and integrated information services.It is concluded that China’s land observation satellites and ground processing systems will be fundamental components of the Digital Earth system,in which satellite data and their derived information will serve as the principal information source and greatly promote applications of Digital Earth.展开更多
Many 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 s...Many 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.展开更多
Security has recently become a major concern in distributed geo-infrastructures for spatial data provision.Thus,a lightweight approach for securing distributed low-power environments such as geo-sensor networks is nee...Security has recently become a major concern in distributed geo-infrastructures for spatial data provision.Thus,a lightweight approach for securing distributed low-power environments such as geo-sensor networks is needed.The first part of this article presents a survey of current security mechanisms for authentication and authorisation.Based on this survey,a lightweight and scalable token-based security infrastructure was developed,which is tailored for use in distributed geo-web service infrastructures.The developed security framework comprises dedicated components for authentication,rule-based authorisation and optimised storage and administration of access rules.For validation purposes,a prototypical implementation of the approach has been created.展开更多
文摘This position paper is the outcome of a brainstorming workshop organised by the International Society for Digital Earth(ISDE)in Beijing in March 2011.It argues that the vision of Digital Earth(DE)put forward by Vice-President Al Gore 13 years ago needs to be re-evaluated in the light of the many developments in the fields of information technology,data infrastructures and earth observation that have taken place since.The paper identifies the main policy,scientific and societal drivers for the development of DE and illustrates the multi-faceted nature of a new vision of DE grounding it with a few examples of potential applications.Because no single organisation can on its own develop all the aspects of DE,it is essential to develop a series of collaborations at the global level to turn the vision outlined in this paper into reality.
文摘The Earth and Space Sciences Informatics division of European Geosciences Union(EGU)and the Open Geospatial Consortium jointly organised a special event entitled:‘Implementation of international geospatial standards for earth and space sciences event’at the EGU General Assembly meeting held in Vienna,April 2009.The event objectives included:(a)to discuss the integration of information systems from different geosciences disciplines;(b)to promote and discuss the present process to scale from specific and monolithic systems towards independent and modular enabling infrastructuresforming an earth system science(ESS)infrastructure;and(c)to show some of the latest advances in implementing open standards.This manuscript introduces the event motivations and describes the abstract and holistic framework,which can be used to situate the topics and the developments presented by the event speakers.This manuscript introduces important,and relatively new technologies to build a multi-disciplinary geosciences information system:the System of Systems approach and the Model Driven Approach.To achieve that,three important information infrastructure categories are recognised:(a)ESS information infrastructure;(b)geospatial information infrastructure;and(c)distributed information infrastructure.Digital Earth should support the discussed framework to accelerate information transfer from theoretical discussions to applications,in all fields related to global climate change,natural disaster prevention and response,new energy-source development,agricultural and food security,and urban planning and management.
文摘Digital Earth is an interdisciplinary field involving space technology,information technology,and geoscience.This article introduces the land observation satellite system of China and discusses the requirements for satellite payloads in terms of spatial,temporal,and spectral resolution to establish a Digital Earth.The applications of land satellites under the framework of Digital Earth are introduced from the perspectives of data support,special subject services,and integrated information services.It is concluded that China’s land observation satellites and ground processing systems will be fundamental components of the Digital Earth system,in which satellite data and their derived information will serve as the principal information source and greatly promote applications of Digital Earth.
文摘Many 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.
基金This work has been funded by the European Commission(FP7 project GENESIS,reference No.223996)the Austrian Federal Ministry for Science and ResearchThe au。
文摘Security has recently become a major concern in distributed geo-infrastructures for spatial data provision.Thus,a lightweight approach for securing distributed low-power environments such as geo-sensor networks is needed.The first part of this article presents a survey of current security mechanisms for authentication and authorisation.Based on this survey,a lightweight and scalable token-based security infrastructure was developed,which is tailored for use in distributed geo-web service infrastructures.The developed security framework comprises dedicated components for authentication,rule-based authorisation and optimised storage and administration of access rules.For validation purposes,a prototypical implementation of the approach has been created.
