The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences. Vol. XXXVII. Part B5. Beijing 2008 
Guangming square of Yinchuan City Zhongshan park of Yinchuan City 
Figure 2 3D simulation scene 
3.5 Research and development of 3D city simulation and 
planning aided design system 
By using VRMap3.0 software platform of Beijing Lingtu 
Company and performing the secondary development under 
Visual Basic 6.0 Chinese version, we developed out a suite of 
3D digital city simulation and planning aided design system 
which can perform browse and design of 3D block scene roam 
of large data quantity. It can also carry out design of model of 
buildings, traffic roads, electricity power lines and import of 
external data. It can import the fabricated house and other 3D 
models as well as tree and other transparent pictures and append 
the text label. It can import 2D line and plane and match texture 
model to generate 3D landscape and carry out toponym and 
objective search, measurement of distance, excavated volume of 
area and so on. Meanwhile, after setting corresponding attribute 
database, in roam and browse process it can query attribute 
information of various ground objects (road, house, power line 
and so on). At the same time it also has the renewal, statistical 
analysis and other functions of 3D virtual block and attributes 
data and can furnish intuitionistic and high efficient design and 
management tool for urban planning management, property, 
traffic, police fire control and other departments. 
4. SYSTEM APPLICATION IN CITY PLANNING AND 
DESIGN 
3D city planning is a development trend of planning industry. 
Along with ceaseless development of computer graphics 
technology, people continually attempt and look for a variety of 
3D graphics technology suitable for their profession. Because it 
is more intuitionistic than a planform and can express more for 
most purposes such as rationality of construction and cultural 
facilities, on the consideration for a variety of surrounding 
combined environment and other aspects, it is more persuasive 
than plane data, 3D technology application will be a trend in the 
recent years. In the present universal 3D technology, 3D virtual 
simulation is no doubt a rising applied technology with very 
large predominance. 
Adopting virtual reality technology, based on 3D geo 
information platform, to carry out virtual field fabrication, can 
import local area planning data to carry out the scheme 
evaluation, And it can use systemic GIS analyses function, 
attribute data management, the secondary development support, 
vector data support and skin skeleton technology to realize 
various data management and specific analysis and furnish the 
gist for visualization decision support. 
Using intuitionistic, accurate, whole angle analyses and 
comparison means furnished by system can enhance 
scientificaalness of planning and decision-making. It can 
enhance urban construction quality and promote urban to 
develop with persistence that 3D technology is utilized fully to 
carry out virtual design of city planning reconstruction and in 
virtual planning scene, mobile and multi-angle comparison is 
carried out for the planning building and landscape to ascertain 
optimal design after comprehensive consideration of 
environment, surrounding structural relation, building design 
and other manifold factors. 
5. CONCLUSIONS 
It will affirmatively impulse further develop of digital urban 
construction and have broad market application prospects to 
apply the 3D city simulation and planning aided design system 
which is fabricated on the basis of high resolution satellite 
remote sensing image to 3D city planning and to carry out 
various city information management, query and analyses by 
combining database technology at the same time. 
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Yang Bisheng, Li Qingquan, Mei Baoyan(2000), 3D 
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Cartographica Sinica, 29 ( 2). 
Li Deren(1999), Information superhighway, spatial data 
infrastructure and digital earth, Acta Geodaetica et 
Cartographica Sinica, 28 (1). 
Wang Dan(1998), Urban space foundation information, city 
GIS and city geo-information industrialization, city 
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