The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences. Vol. XXXVII. Part B4. Beijing 2008
development of Internet and mobile communication technology,
GIS, RS and GNSS technology often use integrately. Modem
surveying technology also refers to "3S" technologies.
Therefore, the above indicators have intersected parts and need
to be modified. P G is is the indicator of GIS project applications
which doesn’t involve the isolated data process, application and
service. The geoinformation application without GIS system
development is calculated in surveying industry. The RS
application integration with GIS should be removed, and the
indicator PRd is modified as PRd' which indicates RS
application without use GIS technology. Surveying and GIS
applications (PGNsg) in GNSS industry is also need to be
removed. In surveying industry, RS industry related aerial
photography (PSVa) and photogrammetry and Remote Sensing
(PSVr), GIS industry related GIS project(PSVg), mapping
industry related map complication(PSVm) are all need to be
removed. The modified indicators are shown in table 1.
Industrial
Branch
Industry size decompostion
Decomposed
Indicator
Modified
Indicator
Surveying
Industry
Geodetic and survey(PSVs) which including geodetic surveying, engineer
surveying, cadastral surveying, real estate surveying and administrative
boundary surveying.
Aerial photogrammetry
Photogrammetry and remote sensing
GIS project
Map compilation
PSVs;
PSVa;
PSVr;
PSVg;
PSVm
PSVs
GIS Industry
GIS application
Pgis
Pgis
Remote Sensing
Satellite image data receiving and agent service Aerial photogrammetry
PRS;
PRs;
Industry
Remote sensing data process and application service
PRa;
PRd
PRa;
PRd’
GNSS Industry
Car monitor, car navigation, consuming products, OEM products, voyage,
aviation, information services
Surveying/GIS
PGNg;
PGNsg
PGNg
Mapping
Professional mapping in surveying department
PCS;
PCs
Industry
Other professional mapping
PCns
PCns
Non-professional mapping
PCo
PCo
Other
Geospatial
Industry
Such as CAD technology application, 3-D imaging technique application;
IT application for geoinformation internet services, including LBS and
Internet map services.
Po
Po
Table 1 Decomposition and modification of industry size indicator
With the modified indicators, there exists the following
formula:
Psum=PGis +PRs + PRa +PRd’+PGNg+PSVs+PCs+ PCns+
PCo+ P 0
2.2 Accessing Method for Indicators
Based on the different characteristics of each industry branches,
considering the data availability, the study integrates direct and
indirect research methods to obtain the value of each indicator.
Direct research methods including questionnaires survey,
on-the-spot investigation, expert visit and sampling study,
indirect methods include: Internet data collection, comparison
analysis, calculating with existed authoritative data, the survey
data verification and revision.
Software, data, hardware and services are the main components
of GIS industry. It is difficult and complex to find out the output
value of each component. By comparison, GIS software is
provided by the software vendor, usually with a clear price. In
addition, foreign and Chinese researcher (Andrew U. Frank,
1991; Douglass A. Smith & Roger F. Tomlinson, 1992; Zhong
Ershun, Zhou Ning, 1994) conducted economic analysis on GIS
project. By GIS software output value and its proportion in GIS
application, GIS industry size can be calculated. This approach
avoids the complicated breakdown of data, hardware and
services, and be relatively simple.
Many companies and institutes are involved in surveying
industry, but all are managed by SBSM. It is relatively easy to
conduct survey. In addition, SBSM has 2005 statistics data of
surveying industry and its breakdown. Chinese satellite remote
sensing data industry is characterized with few and concentrated
companies and institutes, and the on-the-spot investigation is
appropriate to access the output value directly. Mapping
industry companies and institutes is classified by data
availability. The output value of professional mapping
companies and institutes in surveying department can be
obtained by statistics; output value for other professional
companies and institutes can be obtained by conducting
sampling survey. Because there are many industry branches and
some existed estimate data about GNSS industry, using indirect
methods, collecting and analyzing these research data,
conducting interviews is appropriate way to update the value.
Table 2 identifies accessing methods of the study to the
indicators of the geospatial industry size.
3 PROCESS AND RESULTS OF INDICATOR
OBTAINING
3.1 Value Access for Surveying Industry Indicators
The companies and institutes with qualification on surveying
and mapping are the major providers in surveying production
and services market, with the support the Information Center
of SBMS, the author conduct a questionnaire survey to the
9,096 qualified companies and institutes, 5,981 companies and
