ground surface is smooth in h<1.46cm, rough surface 
in h>8.3cm, intermediate surface in h between 1.46cm 
and 8.3cm. So, it mainly reflects the micro relief of the 
surface, we can not take it as the same magnitude as 
the Earth surface relief. Fuping group metamorphic 
2, Geological Interpretation of SIR-A Image 
The linear and ring structures are well distinguished on 
SIR-A images of central Taihangshan mountains, they 
are linear and arc lines on dark background or linear 
and arc boundaries between dark and light (black and 
white) hues, as well as the boundaries between 
rocks show gray hue on image, there are micro light 
lines and spots, which reflects hilly land and 
intermediate roughness of the surface. 
it shows 
( such | 
wood is 
tion and | : 
ar wave 
. More oin F / F, / Fs _ — Langyashan + 
bility of | = M. | fm ar 
| Ci 
ly come x 
he back / me ec. IN 
| ground Foof 
ility. As | F.. =. 
s, more \ Ww UO oM uS Chuanli 
stant of LAC t 
  
  
  
  
  
  
  
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/ affects T 
such as | i < 
cidence 
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ction is 
surface F el 
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5 lighter | - i 
surface 
lues are 
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a, it is 
n angle 
igh, for 
SIR-A, | 
  
  
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t 
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Fig.3 Structure interpretation of SIR-A image and the distribution of intrusions 
in Chuanli area, central Taihangshan 
1 - Diorite 2 - Granodiorite 3 - Granite porphyry 4 - Granodiorite porphyry 
5 - Rhyolite porphyru 6 - Fault 7 - Linear structure 8 - Ring structure 
Intemational Archives of Photogrammetry and Remote Sensing. Vol. XXXII, Part 7, Budapest, 1998 593