Overview of China Spatial Information Gird (SIG) Research
Works
Presentation to WGISS-16
Chiang Mai, Thailand
September 15 , 2003
Pro. Liu Dingsheng, Dr. Li guoqing {dsliu,gqli}@ne.rsgs.ac.cn
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Summery
About China SIG, Background and Project structure
Aim and our focus Finished works overview Key technologies
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China SIG plan
A national research plan funded by China government
To build a spatial information sharing and spatial resource co-operation platform
some huge special application system will use SIG, such as climate, disaster, area pollution, and so on
Not only a data grid, but also an application grid
Started from middle 2002, shall continue about 3 years
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SIG structure
Basic Grid protocols research
Reconstructing the SI resources
according to gridCreating necessary
SIG tools
SIG platformSets of standards
Resources and
Environment Grid
Urban spatial information
servicesGrid
Other special application
Grid
Other special application
Grid
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SIG Architecture
Three Layer Grid Structure Basic module layer: include basic grid protocols , such as
most part of Globus and GridFtp, which do not need to be modified.
Internal module layer: part of basic grid middleware which need to be rebuilt according to SI characters. Such as RFS2.0, GARE, and other modules.
External module layer: sets of grid tools, such as GAPL language, Interface system, DMS tools, BLL etc.
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BasicGridModule
New gridmodule
GARE FRS
Grid tools
GAPL
IRS/IS
DMS
BLL
External module layer
Internal module layer
Basic module layer
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Aim
Information sharing (include Eo data ,GIS data, survey data , statistic data )
Software sharing (include Image processing software, GIS software, special software, network enable equipments)
Synactic Application (how to build a whole application work flow with SIG resources)
Facing to the new coming spatial information (distributed data , huge data, new data resources, new data using methods, data mining etc. )
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Our SIG research works focus on the following:
How to share distributed and different spatial data without disturbing its normal using.
How to integrate spatial analysis software (RS & GIS)
How to descript user’s application and how to submit it to GRID
How to built the interactive interface between grid and web browser (inter-services and intra-services)
A series of standards for SIG building
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Three steps
The first step To build a mini-test grid with three layers structure
The second step To increase compounds of SIG To get high performance Many applications
The last step To build VOs , running system
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CASNET/ I NTERNET(10M)
159. 226. 224. 51
159. 226. 224. 52
159. 226. 224. 53
EO-DS
I nterfaceservi ce
DMS, FRS, PCI
166. 111. 68. 180
Central FRSCA GARE、
RFS,GI S-DS
Geomedi a GI S
LINUX
windows
windows
windowswindows
windows
T-SIG structure
3M
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Finished work
Built a test mini-grid T-SIG, which connecting RSGS-CHINA, Tsinghua Univ. and CAF-CHINA.
Registered resources include two RSGS remote sensing image databases(TM as example), a CAF forestry GIS database, PCI desktop software, GeoMedia GIS software.
EO Data Viewer based on DMS for remote sensing data.
Visualization Interface based on IRS. (DMS and IRS have same work mode as registry services)
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Finished work (Con.)
A description language GAPL, and its runtime environment GARE for application
Dedicated spatial resource register RFS, which modified with P2P technology.
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A simple grid application example– NDVI
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Locate at Tsinghua University
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Locate at China RSGS
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include two TM
databases In RSGS and CAF
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Locate at China RSGS
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Running at RSGS
open-lab.
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Key technologies
RFS: modified Register service DMS: spatial data agent and data mining
service IS: visual interface tools GAPL: grid work flow description language
for application GARE: grid application runtime control
environment
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Grid PCI: most PCI function can be used in grid.
Grid GeoMedia: part GeoMedia GIS function can be used in grid, especially the data access.
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Welcome visiting our project sitehttp://159.226.224.51/app
We also hope to have co-operation with CEOS-GRID project
Thanks!