Transcript SIG - wgiss

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
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
Resources
and
Environment
Grid
Urban spatial
information
services
Grid
Other special
Other special
application
application
Grid
Grid
SIG platform
Sets of standards
Basic Grid protocols
research
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Reconstructing the
SI resources
according to grid
Creating necessary
SIG tools
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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External
module layer
Grid tools
New grid
module
Basic
Grid
Module
GARE
FRS
BLL
Internal
module layer
DMS
GAPL
IRS/IS
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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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 site
http://159.226.224.51/app
We also hope to have co-operation
with CEOS-GRID project
Thanks!
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