+: 
— 
  
Z(X) Fw) 
Sampling interval = 1 
  
(a) 
  
  
  
  
  
6 
5 
4 
3 
d 
À | 
ll I rre ‘ i 
21/5 T/2 Lu 
TERRAIN PROFILE SPECTRUM 
ZX) : Fu) (b) 
Sampling interval = 3 
who w dh on 
21/5 TA NP 
TERRRIN PROFILE SPECTRUM 
   
  
        
  
  
  
Z0 FG) 
Sanpling interval = 5 
TAo 1/5 
  
TERRRIN PROFILE SPECTRUM 
  
  
  
  
  
  
  
  
y49.9 Fu) 
Sampling interval s 7 
A m wd o0 
  
ANDAMAN 
X 
TA 
TERRAIN PROFILE SPECTRUM 
  
Fig.(1) Spectra at different sampling densities. 
- 310 - 
   
(a) 
  
  
w