23 
sa 
& 60m 
4T 
INCIDENCE ANGLE * 
2 
T 
  
MULTIYEAR GREY-WHITE 
ICE ICE 
zak c 
INCIDENCE ANGLE” 
+ 
= 
f 
un 
Ed 
i 
  
  
BE 
Comparison of Simultaneous X- and L-Band Imagery From October 28, 1981. 
Slant range is depicted from top to bottom with corresponding incidence angle shown at the LHS. |t 
is clear that L-band emphasizes the roughness features (ridging and floes boundaries) but does not 
exhibit the strong radar contrast between MY & younger ice which is present in the accompanying 
X-band image. There are some interesting tonal variations in the young ice at X-band which do not 
appear at L-band. 
o 
       
e 
id 
- 
= 
« 
- Gem 
2 
s 
5 
2 
65 
LARGE SMALL 
GRE Y- WHITE MULTI - YEAR MULTI- YEAR 
ICE FLOES FLOE 
: ; 
a 
2 sem 
us 
£3 
Pal 
8 
z 
  
Figure 4b 
Comparison of Simultaneous X- and C-Band Imagery From October 28, 1981. 
The two Images shown give similar grey tone variation with ice class; unlike the results of X/L 
comparison above. The radar contrast between MY and younger ice does however appear to be reduced 
at C-band even though, due to instrumental |imiatations, this channel has reduced signal to noise. 
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x: z 
nn ES J 
EN TC A DE " A 
aan a OF 
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