1-3-5 
10 geo. 
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^ to provide 
* fea tures in 
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)ut environment 
* Implemented. 
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iotapes. This is 
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* can be stored 
Storage and 
f an integrated 
composed of 
ssing and data 
'5) 
We can acquire 
n existing G1S 
cample, one can 
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however some types of data can be evaluated in a 
combined analysis; e g. GPS and inertial measurement 
are integrated to compute a continuous vehicle track and 
to overcome gaps caused by blocked satellite signals. 
WUMMS is both complete and independent. Some 
processing can take place in the mapping vehicle e g. 
road mappmg and object measurement etc. Because all 
data collected by WUMMS are related to geographic 
position, a GIS is the appropriate tool for stormg the 
data. Due to the multitude of different sensors employed 
for data collection, a multi-media GIS must be utilized 
which supports a variety of data types file formats, 
storage media and output devices. For managing the 
information extracted from mobile mapping system, we 
distinguish between spatial data and attribute data. 
Spatial data consisted of three-dimensional vectors and 
geo-coded raster. Attribute are features that are stored as 
record in a relational database Spatial and attribute data 
are tied together by database management software. 
4 APPLICATION AND EXPECTATION 
WUMMS has been applied in such fields as automatic 
vehicle navigation, surveying and mapping of building, 
generation of measurement road network. In addition to 
these, WUMMS will have a variety of applications 
including Highway-mapping, City model plotting, 
utility mapping, etc. For instance, in highway related 
applications, it may be traffic signal inventor, 
monitoring of speed and parking violations and road 
surface condition inspection The data acquisition is 
performed without blocking traffic. The information 
obtained is diverse-a single collection can be used for 
multiple purpose. Moreover, because data can be both 
collected and processed in a short period of time, 
frequent and repetitive road surveys and database 
updating are both possible and affordable. In the 
application to facility, the CCD cameras can photograph 
high voltage power transmission lines, and their position 
can be measured from the image sequences. The 
position of the pole and towers, the position of the 
insulators on each line which support the msulators on 
each line which support the suspending transmission 
lme segments and the lowest points of the suspending 
line segments can be determined simultaneously. 
Typical application of mobile mapping system include: 
• Digital mappmg of roads and railway. 
• Surveying on of pipelines, water and sewer 
systems; 
• Surveying and tracking the evolution of 
distribution networks; 
• Inventory of structure and infrastructures, 
• Data collection for the generation of transporta 
tion database. 
It is especially emphasized that MMS technology is an 
information acquisition way with high integration, 
automation and streamline. It provides a revolutionary 
means for data acquisition in modem digital mappmg 
and GIS . As the important data source of urban GIS and 
digital mapping, its potential application appears to be 
limitless. 
With the development of communication and image 
compression technology, real-time image data link from 
a field mobile mapping system to an office can be 
realized. Furthermore, such data can be disseminated 
and accessed through a widely distributed Internet. The 
fusion of image, vector feature and base map data could 
be dealt with digital mappmg presentation, real-time 
processing and integration with other data would be 
enormously exciting. 
5. ACKNOWLEDGEMENT 
The authors thank Natural Science Foundation of China 
and State Bureau of Surveying and Mappmg, for their 
support The grant number is NNSFC49631050. 
REFERENCE 
Wang Zhizhuo, 1990. Principles of Photogrammtry, 
Press of WTUSM. 
Li Deren & Zheng Zhaobao, 1996 Photogrammtry, 
Press of WUTSM 
Tao.c, 1998. Towards Sensor International Workshop on 
Urban Multi-Media/3D Mapping (UM 3’98). pp97~104. 
Kurt Novak, 1995, Mobile Mappmg Technology for 
GIS Data collection ,PE&RS, Vol,61, No5 pp493~501.