The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences. Vol. XXXVII. Part B4. Beijing 2008 
99 
Based on the geographic information acquisition and the 
processing system, the spatial database or the integrated 
geographic information service system can be constructed. 
Through the data acquisition, collection and integration, and 
establishment and renewal of navigation electronic map, some 
services system such as Location Based Services (LBS), 
intelligence transportation system (ITS) could be built to 
provide the value-added service for some specialized industries. 
From the technical angle, the digital city is the result of 
integrating multi-disciplinary science and technology. It 
depends on the digitized surveying and mapping system, the 
realization of a geographic spatial information system and the 
renewal, intellectualized processing and the integrated 
management, the network distribution and service. 
Phases 
Contents 
Analog 
Digitizati 
on 
Informatiza 
tion 
Knowledgem 
ent 
Ubiquity 
Data 
Type 
Simulatio 
n Data 
Geograp 
hie Data 
Spatial 
Data 
Grid Data 
Eco-Data 
Focus 
Ontology 
Data 
Informatio 
n 
Knowledge 
Integrating of 
Data, 
Information 
and 
Knowledge 
Product 
Model 
Hand 
made 
DEM/D 
OM/ 
DLG/DR 
G 
Digital 
Measurable 
lmages(D 
Ml) 
Online 
Intelligent 
Realtime 
Ecological- 
made 
Technol 
ogy 
Tradition 
GIS/GPS 
IRS 
(3S) 
3S +LBS 
3S in One 
+ LBS 
Global 
Information 
Grid 
4A/4w 
Service 
Base 
Map 
Based 
Service 
Position 
Based 
Service 
Location 
Based 
Service 
Routine 
Based 
Service 
Ecology 
Based Service 
Directio 
n(USGS 
) 
Map 
Monitor 
Understand 
Model 
Predict 
Host ID 
Map- 
maker 
Geoinfo- 
Provider 
Geomatics- 
server 
One Stop 
Server 
Server on 
Eco-Demand 
Infrastru 
cture 
Archives 
SDI/SII 
SII/SGI 
SGI/SSI 
SSI/SAI 
Domain 
direction 
Surveyin 
g& 
Mapping 
Geo- 
informati 
on 
Spatial 
Informatio 
n 
Technolog 
y 
Knowledge 
Industry 
Creative 
Ecology 
Build 
Power 
Surveyin 
g& 
Mapping 
Surveyin 
g& 
Mapping 
industry 
Geomatics 
Industry 
National 
Hold 
Social 
Demand 
Represe 
ntation 
of City 
Archive 
City 
Digitizati 
on City 
Digital 
City 
Grid City 
Eco-city 
information is their carrier and mathematics foundation. In the 
information age the development of internet and 
communication network adding the portable computer terminal, 
will cause the popularity of spatio-temporal information service 
representing characteristics of current and the near future. 
These are also the key to operating the spatial information 
industry. So the construction of digital city must depend on the 
public service, the public product, the public platform etc. 
3. THE ORIENTATION OF DIGITAL CITY 
The realization of informationization can not be sole achieved 
from the technical angle or the management level. It needs an 
omni-directional system construction which involves theory, 
technology, management, operation and maintenance. The 
traditional surveying and mapping system takes production 
as the masterstroke, the digitized surveying and mapping 
system considers the technology as its masterstroke too, but 
the digital city selects the service as its masterstroke. Digital 
city is not just the informationization of surveying and 
mapping, the same as informationization society is not just 
society's informationization. Digital city is the inevitable 
product of specific historical stage. 
Therefore, we should understand Digital city on the 
foundation of digitized surveying and mapping system. 
Digital city can be oriented with the characteristic of the 
automation of surveying and mapping technology, the 
digitization of surveying and mapping production, the 
network convenience of surveying and mapping service, the 
socialization of surveying and mapping product. 
4. PHASES ANALYSIS OF DIGITAL CITY BASED 
GEOMATICS 
It is not its ultimate objective that the surveying and 
mapping develops to the Geomatics stage, as the 
informationization society is not the ultimate society; it will 
not bog down but develop forwards. Table.2 shows the five 
phases of digital city based Geomatics. 
Table 2 Five phases of Digital City Based Geomatics 
Based on all these it realizes the fusion of geographic spatial 
information resources and the value-added service, to push 
forward the application of the surveying and mapping 
information and the technical product, to provide the multi 
criteria, the multi-form services to the public. 
Social activities and the development of the environment are all 
changed under temporal datum frame; the terrestrial space 
The phases of digital city based on Geomatics is composed 
of analog, digitization, informatization, knowledgement and 
ubiquity five phases. Analog phase is the basic and 
primordial phase accompanied by the undeveloped and 
traditional surveying and mapping technology. In this phase 
data type is the simulation data focusing on the ontology of 
the real world and all products are provided in the hand 
made model with the traditional and less-developed 
technologies. The services provided to the public in this 
phase are map sheet-based. Map sheets are the only vehicle 
for the urban planning and management and for guiding the 
public. From the USGS point of view, the management of 
city in terms of Geomatics is based on static map sheet, and the 
map-maker is the host ID of analog phase. Therefore the 
surveying and mapping is the domain direction and build power 
in the process of digital city, and representation of infrastructure 
and city is in the archive format in this phase which limits the 
city’s management modernization progress to some extent. 
With the digitization technology development, especially 
computer science and technology development, the 
representation of the city moves to the digitization phase. The 
description of the city from traditional map model increasingly