The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences. Vol. XXXVII. Part B7. Beijing 2008 
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2. LANDFORM MAP RENEWAL USING REMOTE 
SENSING IMAGE 
Because most of landform map of our country were plotted 
before the 1980s. Road, habitation and other elements have very 
large changes. Additionally because of adjustment of 
administrative division of villages and towns, administrative 
division of County and under County has also very large 
changes, which are not reflected in the original map. As a 
foundation map of field investigation exploration and coal 
geology mapping working, the existing landform map already 
had no means of meeting real work demand, thus renewal is 
urgent. 
Data of satellite remote sensing image is strong in real-time 
feature and wide in covering surface, already becoming an 
important approach of obtaining and renewing information 
needed by heterogeneous, difference scale databases of state 
basic scale topographic map and state fundamental geography 
information system. Thus it is required to adopt remote sensing 
image of different resolution to carry out renewing processing 
for existing landform maps and collect a great deal of relevant 
data and documents for correction. 
Scanning and rectification are performed for existing map data 
and numeralization are performed according to job specification. 
Then according to scale, high resolution SPOT, IKONOS, 
Quickbird and other images are adopted to carry out 
rectification and mix processing of geographical coordinates. 
After mosaic, cut is performed to generate images map 
coordinates. After understanding local basic status in remote 
sensing image and map, sampling of field investigation and 
keystone region are ascertained to carry out survey and plotting 
in the field to obtain identification characteristic of image and 
collect data from local related departments at the same time. 
According to the collected document and field investigation 
experience, remote sensing image is utilized to carry out 
renewal for digital map and carry out inspection for renewing 
results. Finally according to principle of map design, map layer 
design, symbolization map decoration and other workings are 
performed to obtain the aesthetic and precise map data. 
3. HIGH PRECISION REMOTE SENSING GEOLOGY 
MAPPING 
Because current 1: 250000 area mapping working and original 1: 
200000 geologic map of our country had no means of meeting 
the working precision of survey and exploration of regional coal 
resource, as a basis of coal resources exploration, it is also 
urgent to unfold 1: 50000 or bigger scale geologic mapping 
working of keystone region. 
As a kind of basic technique means, remote sensing technique 
has been extensively used by geologic survey work. Along with 
unceasing elevation of aerospace remote sensing technology in 
spectra and spatial resolution aspects, it furnishes new 
development chances for geology application of remote sensing 
again. For example, airborne hyper-spectra, multi-spectral 
technique can obtain the remote sensing image and data from 
space at the same time, thereby furnish narrow band, hyper 
spectra, high resolution reflecting data and gray scale value for 
surface geology spectrum quantitative analysis and also furnish 
strong document support for the geology personnel to use the 
computer technical classification directly to generate the 
required enhancing information image of rock and mineral. 
By means of remote sensing technique, taking the regional 
geological mapping as objective, it applies the image unit 
method, image rock unit method and unit profile method 
rationale to carry out explanation for regional strata, rock mass, 
structure and other factors. 
3.1 Sedimentary Strata aspect 
1. Quaternary sediment explanation can use the remote sensing 
image to ascertain manifold genetic types of quaternary system, 
whose certainty of geological boundary and modal plotting 
surpass ground reconnaissance geology survey. 
2. It can identity the boundary of mapping unit of formal 
lithostratigraphic unit, whose accuracy ratio can reach 80—100 
% except individual segments. It can trace and ascertain 
informal stratum unit extension and pinch out, more portable 
and accurate than ground trover. 
3. Combined with high resolution satellite image or aero 
photographic image, it can carry out identification for contact 
relation among strata, such as unconformity, parallel 
unconformity, more effective especially for tectonic contact 
relation. 
4. It can carry out a trover for lithofacies variance of identical 
stratum, especially lava variance situation in lava strata, whose 
effect surpasses ground investigation. 
5. According to predominance of remote sensing image which 
is wide in visual field and strong in transverse contrast, it can 
correct locations where predecessor has processing errors and 
can set up stratigraphic framework of surveyed area remote 
sensing to direct fieldwork demonstration working. 
6. It is self-explanatory that remote sensing image has 
predominance for unfrequented regional strata mapping. 
3.2 Magmatic rock area 
1. Remote sensing image can almost reach 100% for identifying 
rock mass borderline and the plotted rock mass boundary 
surpass ground observation in accuracy rating. 
2. The recognition rate is greater than 60% for complex interior 
unit boundary. 
3. It can only identify main class currently for lithology 
discrimination, with concrete detail needing a fieldwork. 
4. In the section where interpretation effect of middling 
resolution image explanation is better, combined with high 
resolution satellite image or aero photographic image, it can 
differentiate vein rock, the order interpenetration relation, 
distribution regularity, coping residual body, wall rock xenolith 
and wall-rock alteration phenomena in rock mass. It can also 
identify partial schistosity, contact relation and other structure 
phenomena and furnish macro information for perching 
mechanism of rock mass. 
5. By utilizing remote sensing predominance, it can carry out 
re-merger and disinterring for magmatic rock unit and sequence 
for which predecessor partition and merger is comparatively 
turbid.