International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B2. Istanbul 2004
4.2 Data Management System
For managing the satellite imagery information, we design
the structure of data in hierarchical process. Since the size of
satellite imagery information is large, we register the satellite
image in online. If the amount of online is 70 ~ 80% full, we
move the satellite imagery information to the nearline. If the
amount of nearline is 80% full, we draw the tape offline. The
satellite image which use frequently want to service is on the
online. For the sate of data, we backup the metadata, raw data,
browser images and thumbnail images for periodic times.
Figure 7 shows the picture of DMS.
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Figure 7 Data Management
4.3 Data Distribution and Web Services
For distributing the satellite imagery information to users,
we design the DTS (Data Transfer Software). Since DTS and
WS (Web Service) hold the information of users in common,
DTS must be connected to the web service. When users search
the satellite image which they want and order the satellite
images, DTS receives the order. If operator accepts the order,
DTS send the request to DMS for the raw data. If the requested
data is on the online, DMS calls DTS to process the order. If the
requested data is on the nearline state, DMS send the data
which is on the nearline to the online. Figure 8 shows the
picture of data order.
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Figure 8 Data Order
For the Web Service, users can experience the educational
contents for remote sensing including the practical exercise on
web. Our service will offer the customized software service
(e.g., geotiff image converter of Landsat image for each band)
6
4
which users want to have for each work even if they are
unfamiliar with the remote sensing. Figure 9 shows the
homepage of our service (http://simc.etri.re.kr)
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Figure 9 Web Services
5. CONCLUSIONS
We are trying to expand the application of remote sensing
in diversity sections and many person use the satellite imagery
information management freely through the system of “Satellite
Imagery Information Management”. Our next step for business
model is targeting to the distribution and development of user
customized software for high resolution satellite images. We
also update the DRS, DMS and DTS applicable to high
resolution images.
6. REFERENCES
USGS Home page, http://www.usgs.gov
FGDC Home page, http://www.fgde.goy
RESTEC Home page, http://www. restec.or.jp
JAXA Home page, http://www jaxa.jp
NGIC Home page, http://www.ngic.go kr
ISO/TC 211 Geographic information/Geomatics Home page,
http://www.isotc211.org/
SIMC Home page, http://simc.etri.re.kr
KEY WC
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