Z(X) 
  
  
  
  
  
   
  
  
  
  
  
TERRAIN PROFILE 
  
  
  
‘| FG) (a) 
Sampling interval = 1 3 
6t 
5% 
al 
34 
21 | 
Tb : 
p 5 UJ 
TERRRIN PROFILE T SPECTRUM 
Z(X) Fiu) (b) 
Sampling interval = 4 Y: 
6t 
5+ 
23 
1 | 
21 | 
M rri A i NA 4 
m n: H 
T1/4. 1172, w 
TERRAIN PROFILE y SPECTRUM 
Z(Xx) Fw) (c) 
Sampling interval s 6 73 
: li 
ét 
st 
4t 
2% | | | 
ps , i 
d AM Xl di M Hoe 
4 ws 74/5 LU 
  
  
  
  
Z(X) 
Sampling interval s 8 
   
    
  
TERRRIN PROFILE 
    
  
  
  
  
  
SPECTRUM 
Fu) (d) 
7% 
ét 
5+ 
41 
Wh A040. 40] 
4, | A d | fl MM 
IT 02 UJ 
t 
  
SPECTRUM 
  
  
Fig.(2) Fictitious profile data and their Spectra 
for different sampling intervals . 
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