scan angle (deg.) 
date -20 0 +20 
  
  
  
z 
® 
  
  
  
  
  
+10 L3 
  
  
  
+13 ! | ! : | H Figure 2 Variations of scan angles at nadir 
: ; : point which is obseved on N-th day 
  
« : AVHRR o :OCTS H:GLI 
  
Figure3 Patterns of coverage and solar zenith angle at vernal equinox of AVHRRand GLI 
(1) coverage patterns of AVHRRand GLI 
(2) solar zenith angle of GLI on consecutive 2 passes 
(3) solar zenith angle of NOAA-11/AVHRR(March, 1989: after launch) 
(4) solar zenith angle of NOAA-11/AVHRR (March, 1994) 
280 
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B7. Vienna 1996 
d aa. MER, NU 
dia. 
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eR yr o e up V au DAS