Imbers 
' OCTS 
ge wil 
ally for 
during 
\, three 
roduce 
OCTS 
nages) 
ny pixel 
GLI are 
nposite 
itoring, 
th the 
ing the 
ALI for 
thod of 
L| data 
in this 
| using 
data in 
ud free 
ems on 
urnal of 
e effect 
ensing, 
ndance 
tion (in 
34-41. 
  
  
Table1 Characteristics of satellite /sensors 
NOAA-9 / AVHRR NOAA-11/AVHRR ADEOS/OCTS ADEOS —II/ GLI 
"height (km) 850 850 797 802.9 
period (min.) 102 102 101 101 
inclination (deg.) 99 99 98.5 98.62 
FOV (deg.) [swath] +55.4 [3,000 km] +55.4 [3,000 km] +40 [1,400 km] +45 [1,600 km] 
IFOV (mrad) 0.944 [1.1km] 0.944 [1.1km] 0.85 [750m] 1.258, 0.3125 
[spatial resolution] [ 1km, 250m] 
recurrency 7 = 14 +1/8* = 14-179? 14 + 11/41 14+1/4 
lines per one scan 1 1 10 12 
local time at approx. 2:20*) approx. 1:40?) 10:30 +15 10:30 +15 
descending node 
spectral bands vis - near IR (2) vis - near IR (2) vis - near IR (8) vis - near IR (22) 
thermal IR (3) thermal IR (3) thermal IR (4) short IR (5) 
thermal IR (7) 
  
  
  
  
  
  
  
*) The angular velocity of NOAA satellite is delayecd gradually. Consequently, 
the recurrency becomes less and the local time at descending node becomes later. 
Figure 1 
  
  
  
  
  
  
AVHRR 3 deg 
date +3 +2 +1 N -2 -3 
Q A o a Q. Q 
x 7 aJ 
30de 
5 
e 
WV» 1 
e 
8.8 deg uh 
OCTS 
-] 
10 12 7 4 -$ +15 +4 181 +12. s 4 
date e Ges hi FS tuo al N ARNO + -14 +16 
DO OR RR A RD OO OH AD ln On 
eA 
797 m 
LENS ANN, ANY 
Lo INS NAN 
     
   
   
4 + KA Jo] 5e 
NS NA, OÔLS deg 
ON NN NE 
  
date 71 
  
  
  
  
802.9 km 
  
  
  
  
8.5 deg 
  
Consecutive orbit positioins and observed coverages (on the equator) 
279 
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B7. Vienna 1996