IAPRS & SIS, Vol.34, Part 7, "Resource and Environmental Monitoring", Hyderabad, India, 2002 
At last, the most comprehensive information about terrain is 
tours wich provided by 3D terrain model. It provides opportunity to 
look over terrain objects from any point in space. 
Figure 5. GIS created from satellite survey of 1998 
  
S and In whole, the monitoring Centre presented here allows to 
produce and maintain dynamic GIS economically and 
technically effectively. In this case there is performed regular 
observation of the ground, adding data to RS data base and 
and, road updating of all levels of information system. 
natic maps 
S the basis 
"amiliarly, 
imagery 
image can 
networks, 
g on the 
     
   
VOCE mi Eum E 
Figure 6. GIS updated using satellite images of 1999 
  
  
  
CONCLUSION 
  
  
The monitoring Centre presented in this paper provides 
  
  
  
complex and  economicall effective structure for 
Figure 4. 3D model of an area of the city Wi oy y» , 
organisation of works in receiving, processing and 
: ; distribution of RS data. It brings together all modern 
Such a project was performed for Riyadh, Saudi Arabia. : el gs log oy ead Bu 
; infrastructure of receiving, processing and distribution of 
vt Geo-information system was created for. Figure 4 shows 3D js Ns 
. ; data and production of products. This includes satellite, 
T model of an area of the city produced only from space ial d d f inf : Neat 
SD data. The satellite survey was performed with 1-year gere ae a aus 9 informaron Collscrion; 
S Survey À ; GPS/GLONASS means, communication means, ground 
DS interval. Figure 5 shows GIS created from satellite survey of ; ‘ : 
STE : NA means for data processing and integration into Geo- 
ei 1998. Figure 6 shows GIS updated using satellite images of inf ; S d h inf ; 
station £ C ; Information Systems and other information systems. 
> 1999. Then there was performed computer comparison of 
hs ; t Moreover, development of technology and market shows 
K images acquired in different years. As a result the B 
infi ti tem showed the chane ed at the site that the use of RS technologies is maximally effective in 
) N m Gau System > owe ; m ases oe dd ces case of joint use of different kinds of information, data bases 
nsir P Sire 7 SDOWS riewiy appeared constuetions and the places and information processing technologies. 
9 1 of former constructions no more existing. 
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