State of Science and Technology:   Spatial data infrastructure (SDI) is generally defined as the technologies, policies, and people necessary to promote sharing of geospatial data throughout all levels of government, the private and non-profit sectors, and the academic community. Goal of SDI is to reduce duplication of effort among agencies, improve quality and reduce costs related to geographic information, to make geographic data more accessible to the public, to increase the benefits of using available data, and to establish key partnerships with states, counties, cities, tribal nations, academia and the private sector to increase data availability. With efforts of previous years, datasets of various types have been produced at global, national, regional, city level. Recently much demands on service and application of SDI  have been raised and much attention has been paid to data updating, data harmonization, and geo-spatial cyberinfrastructure that aims at solving the problem of efficiently connecting data, computers, and people over the Internet.

Terms of Reference: WG IV/1 Geospatial Data Infrastructure

• Development and management of multi-level (national, regional and global) geospatial databases
• Synchronization of disparate geospatial resources to provide a useful, usable, and enabling framework that can be integrated with environmental and socio-economic data for research, discovery and web services characterized by broad access and ′end-to-end′ coordination
• Further development of high performance networks and communication technologies for efficient data handling, distributed and federated repositories, human-centred visualization, and applications to improve web-based geospatial services and analysis
• Contribution towards open source principles; metadata; and open standards of service, system architectures, and geospatial information
• Cooperation and liaison with international efforts (GEOSS, Digital Earth, UNSDI, INSPIRE and GMES), and organizations (GSDI, WGISS, ICA, OGC, W3C, ISO and EuroSDR)

• Joint International Workshop of ISPRS WG IV/1, WG VIII/1 and WG IV/3 on′Geospatial Data Cyber Infrastructure and Real-time Services with special emphasis on Disaster Management′ will be held during November 25-27, 2009 at Hyderabad, India.
• The Joint-WG-Workshop has been approved by the ISPRS Council.
• E.Pattabhi Rama Rao, Co-chair of ISPRS WG IV/1, visited National Geomatics Center of China and provided a lecture on ′Ocean Information Service in India′, 8 May 2009, Beijing, China.
• ISPRS WG IV/1 assisted in the instruction of a workshop organized by WG IV/2 and WG II/2 on ′GIS Updating from Imagery and Collateral Data Sources′ and conducted at the American Society for Photogrammetry and Remote Sensing Annual Conference held in Baltimore, Maryland, USA on 10 March, 2009.
• ISPRS WG IV/1 has been approved to organize a special session on ′Geospatial Data Cyberinfrastructure′in the coming ISDE 6(http://www.isde6.org/), September Beijing.
• ISPRS WG IV/1 submitted a proposal for organizing a special session on ′Geospatial Data Cyberinfrastructure′ in the 6th International Symposium on Digital Earth (ISDE6) with the theme of Digital Earth in Action, which will be held September 2009 in Beijing.
• ISPRS WG IV/1 successfully delivered a lecture on ′Web-based geographic information services′ in the training Course on SDI, organized by PCGIAP, 4-10 January 2009, Hainan, China.
• ISPRS WG IV/1 officers are drafting the proposal of the 1st WG Workshop in 2009, India.

Technical Commission Officers: