International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume XXXIX-B4, 2012
XXII ISPRS Congress, 25 August — 01 September 2012, Melbourne, Australia
3. WHAT IS THE MAIN WORK OF THE
NATIONAL GEOGRAPHICAL SITUATION
MONITORING IN CHINA?
Figure 1 shows the framework of national
geographical condition monitoring of China.
National geographical situation monitoring of the main
tasks should at least include:
(1) the elements from extended mapping factor to total
mapping factor. Namely: the surface all kinds of
natural and human elements of information acquisition,
processing, analysis and use.
(2) dynamic mapping. That is, from a time point
changes mapping into a period time on the surface
dynamic monitoring and modeling.
(3) full use of the theory of modern maps and mapping
technologies for tangible or intangible national
conditions, economic and social elements of spatial
differentiation research and monitoring.
(4) basic geographic information database based on
modern surveying technology and geographical
information analysis applications to meet the needs of
the formation of the geographical situation analysis
report and other information products.
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Figure 1. Framework of national geographical
condition monitoring
4. WHY IMPLEMENTING NATIONAL
GEOGRAPHICAL SITUATION MONITORING
IN CHINA NOW?
Looking at the history of mapping, we found, there
have been two forces driving the development of
surveying and mapping, one is social needs for
geographical information and its applications; the
other one is technology progress. Which social needs
is the external power, and technological progress is the
inner thrust for promoting the development of
geographic information mapping.
4.1 The result of significant changes in demand
Generally, in the end of 21 century, the actual demand
of mapping and geographic information services for
our economy and society has significant changed. To
the end of the last century, despite the needs of
mapping and geographic information for economic and
social development has been changing, but in essence
still the basic map for the main demand product.
Figure2 shows analysis of demand trends of China's
geographic information mapping.
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Figure 2. Development trends of geographic
information mapping
The characteristics of new era of survey and mapping
geographic information as follow:
(high dynamic. Periodic mapping and geographic
information update has unable meet requirements.
(2) global. New era of economic and social
development in all areas propose new and higher
demands to the work of mapping geographic
information should reach heaven, into the earth, sea
and teng pole.
(3)comprehensive. Seven elements of data services has
been far from satisfying the requirements of
comprehensive monitoring and analysis, so, it is
necessary to provides a comprehensive geographic
information services to meet the urgent needs of the
task.
4.2 Technology promote dramatically change
Mapping technology is always an important impetus
for the development of geography information.
First, the vigorous development of space technology
for the geographic information mapping has opened up
broad prospects. According to national development
planning, " Twelfth five" period, the state will achieve
the Beidou satellite positioning system to cover the
target region, in terms of remote sensing satellites will
further increase investment for the weather, ocean,
land resources, environmental mitigation, mapping and
other needs, planning to launch low, medium and
high-resolution earth observation satellites. And now,
there are already nine satellites, remote sensing
satellites in orbit desire to over 20 in 2015.
Second, geographic information mapping
modernization of production facilities, information
technology, production gradually to meet the service
system as "monitoring" real-time, process automation,
network services. And, the series of national scale-
based geographic information database has established.
Third, the rapidly development of network technology
and network infrastructure enhanced the capabilities of
geographic information security services, promoting
applications for the next step to update the base
mapping and geographical information service-
oriented transformation.
5. HOW TO REALIZE NATIONAL
GEOGRAPHICAL SITUATION MONITORING
IN CHINA?
There are four items to facilitate monitoring
geographical conditions normalization and
standardization:
First, the technical system of surveying and mapping
production should be transformed from digital
mapping to information mapping, and ultimately
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