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International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B6. Istanbul 2004
2.2 Close Range Photogrammetry Systems
The Photographic Total Station constructed by Wuhan
University, based on short base line series image technology,
can be used to survey the earthwork and the coal stack. We also
construct a system based on approximate-2D control field to
establish the model for calibrating the digital camera distortion
in School of Remote Sensing and Information Engineering,
Wuhan University. Wuhan Hengke Cyber-tech Company
developed the Solid 3-D Visualization System with 2 CCD
cameras and a Im length fix-up baseline. Wuhan University
teamed up with South Korea developed a vehicle-borne MM
system for highway road network generation and surface
quality detection and this system had been exported to South
Korea in 2002, and its software had been sold to Italy in 2003.
Wuhan University cooperated with Shandong University of
Science and Technology developed a vehicle-borne system
with 2 GPS receivers, 2-D Laser Scanner, CCD camera and
control computer, for acquiring the city building vertical
surface images. China Academy of Surveying and Mapping
Science constructed a Data Acquisition System for Digital City
based on low altitude unmanned aerial vehicle (UAV).
2.3 Remote Sensing Systems
In recent years, China keeps developing at a rapid pace in
remote sensing platforms and sensors. Different series satellites
have been launched since 2000, especially the success first
manned space flight in 2003:
€ Small satellite Qinghua-1 in 2000.06;
€ Geostationary climate satellite FY-2B in 2000.06;
€ Oceanic stellite HY-1A with polor climate satellite FY-
1D in 2002.05;
€ Earth resource satellite CBERS-02 and Probe -1 in
2003.10;
€ Spacecrafts SZ-3, 4, 5 since 2002.3;
We are now developing our RADAR satellites. As to remote
sensing sensors, there are some achievements should be noted:
CMODIS in SZ-series, the second moderate resolution imaging
spectroradiometer after USA; Multi-mode microwave sensor in
SZ-4; 10 bands COCTS and 4 bands CCD camera in HY -1A.
In Airborne remote sensing, we have capabilities to acquire and
transmit multi-source digital data in real time, which have high
spectral resolution, high spatial resolution and 3-D imaging and
247
round the clock characteristics. The airborne sensors we
developed include: OMIS (128 bands), PHI (144 bands), MAIS
(72 bands), and airborne SAR. The first remote sensing satellite
calibration field in China was in operation in 2002.10. This
means we have gotten a great progress in enhancing the
calibration and validation of remote sensing data that will
improve data quality quantitatively. We have cooperated with
the White Sands Field in USA and Toulouse Field in France.
China-made softwares of remote sensing processing and
analysis are in developing. We believe there will be some
powerful Chinese remote sensing softwares in near future.
2.4 GIS Systems
China has developed copyright-owned GIS softwares since the
beginning of 1990s. At present, there are some representative
national commercial GIS software, for example, GeoStar,
MapGIS, and SuperMap etc. These softwares occupy more and
more market share than before.
3. THEORIES AND METHODS
3.1 Photogrammetry
With the continuous expanding and developing of digital
photogrammetry, its theories and methods are also rapid in
evolution. These theories and methods are also applied in map
updating, close range photogrametry and industry surveying.
Some progress are listed below:
€ With the powerful capability of corresponding points
matching in VirtuoZo, a rapid AAT module along with
PATB has been constructed and sold more than 200
: suites;
€ We have extended the matching module in VirtuoZo to
carry out the data fusion, with higher speed and more
precision, among multi-scale remote sensing data such as
SPOT and TM;
e We have successfully accomplished the matching
between DLG (road and water system) and remote
sensing image. It would accelerate the procedure of 1: 50,
000 map updating by using SPOT data;
€ Prof. Zuxun ZHANG put forward a new theory, named as
Generalized Point based Photogrammetry. This theory
has been successfully applied in surveying the round or