Table 1. 
Specification of MSR ( MOS-1 BBM ) 
"cr E: e 
EELS FS 33ST 
    
  
Frequency 
23.8 GHz 31.4 GHz 
  
RF Bandwidth 
(dB) 
10} 
400 MHz 500 MHz 
  
Beam width 
1.99 deg. 1.45 deg. 
201 
  
Integration 
Time 
10 & 47 msec 10 & 47 msec 
  
Radiometric 
Resolution 
30 
1.0 Kat 300 K | 1.0 Kat 300 K 
  
Dynamic Range 
40 
30 - 330 K 30 - 330 K 
Relative power 
  
  
Polarization 
  
Horizontal * Vertical * 
  
  
So 
  
Table 2. 
* In the field experiment, BBM was modified 
to dual polarization 
The ratio of the contribution of each 
  
-18 -T 
Angle 
(i 
integration area at 31.4 GHz 
Fic 
  
Incident 
angle 
1 
Gda &l Tei 60de 
GoJas 9-5 
1 
% [Tou 
aq ^' 
J Tein Glid 8 
ul B.G ; 
  
10? 
0.837 
0.146 
0.017 
  
15° 
0.849 
0.133 
0.018 
  
20° 
0.85] 
0.130 
0.019 
  
30? 
0.838 
0.140 
0.022 
  
  
  
40? 
0.802 
  
0.174 
0.024 
  
  
  
SW 
  
  
  
  
  
  
   
  
  
  
  
  
  
  
  
  
  
  
  
  
  
   
  
  
   
   
   
    
  
  
  
  
  
  
  
y) 
RX 
  
  
  
  
  
| 
Encoder 
  
  
  
  
  
  
ANT 
OMT 
SW 
OMT Oo 
Sky 
horn NS 
SW 
Oo 
Og 
NS 
  
  
RX 
  
  
  
  
  
  
  
SW 
  
C ; 
Fig.1 Block diagram of MSR 
3lGHz 
ANT : 
OMT : 
SW 
NS 
CNS: 
RX 
Antenna 
Orthagonal Mode Transducer 
: Switch 
: Noise Source 
Comparison Noise Source 
: Receiver 
Tower r