The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences. Vol. XXXVII. Part B4. Beijing 2008 
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spatial data is unified to save in the object oriented and 
relational database. 
2.2 Data Organization 
SAR orthographies, the main data of the system, and some 
other auxiliary data such as vector data, DEM and the 
parameters of SAR reference images are the data source of the 
database.The model of SAR reference image database is 
defined based on the logical structure and the GeoDatabase 
model, which can be seen from figure 1. It is divided into some 
sub-database, like DOM, DEM, DLG and the database of 
property. Raster data is organized by raster catalogs. 
Othographics of each region is treated as a sub-database of 
DOM, and each image is stored as a dataset. DLG is composed 
of different scales, and is stored by geographical features. Each 
geographical feature is made up of point, line and polygon. The 
hiberarchy of the database is clear, and it is easily to update 
data and is used to organize and manage massive data. 
SAR 
Reference 
Image 
Database 
— region 1 
DLG 
— region 2 
i— block 1 
— region n 
1:5000 
Property 
ImgParaTable 
User Table 
boundary 
gep 
traffic 
Polygon 
Figure 1 Logical Structure of SAR Reference Image Database 
3. DESIGN AND IMPLEMENTATION FOR SAR 
REFERENCE IMAGE INFORMATION INSURANCE 
SYSTEM 
3.1 Objective of the System 
The objective of the system is to build a database using GIS, 
network and database technology to manage data of 
experimental regions with military value. The key task is to 
organize, store, manage, query, and analyze the data, which will 
support for decision making. 
3.2 System Framework 
C/S pattern is used in the system, and three- tier structure is 
adopted, that is the data tier, where Oracle is used to store 
multi-source data, the logical tier, where ArcSDE is used to 
connect the user and the database, and finally the application on 
the client developed by ArcEngine. By using this mode, the 
access to the system can be controlled and the data can be 
backup and restored to keep the consistency and integrality. 
Data Processing 
Data Management 
Figure 2 System Framework 
3.3 Function Modules of the System 
Reference images, the fundamental data of the system, are 
geocoded orthographies with geographical coordinates after 
processing with original images. They can be organized and 
managed with other relative data by SAR reference image 
database. Meanwhile, the flight path and the optimal route can 
be planned by spatial analysis, which can make the exact spy 
and strike come true. Based on data management, decision 
making and data processing, this system is designed for 6 
function modules like data import and updating, data view, 
query and index, spatial analysis and system maintenance. See 
figure 3. 
3.4 Implementation of the system 
When user login the system, the username and corresponding 
password is checked. Users of different levers are granted with 
distinct privileges by administrators, with which they can 
access and manipulate the data in the database. Figure 4 shows 
the interface of the system. 
Figure 4 the interface of the system