13 —50 
091% ° 101000002000 0 06 45 
o 1 
O 0.84 443 nm 40 
  
  
  
PT NN OS TN! 
21 22 23 24 25 26 27 28 29 30 31 32 
Scene number 
  
gi. 20. 0.00.0000... P Ln 
oo 
œ 
443 nm 40 D 
olarization 
© 
  
  
  
tr TETE 
21 22 23 24 25 26 27 28 29 30 31 32 
Scene number 
  
| * Desert 
«- Theoretical value | 
Figure 3 The reflectance and degree of polarization variation at 443 nm against viewing angles for "Desert". 
Lambertian surface of À = 0.05 and & = 1.0 is assumed. 
  
670 nm 
  
  
  
"Pr UT. 
21 22 23 24 25 26 27 28 29 30 31 32 
Scene number 
  
  
  
c 14 -50 
€ os1* * "tete ans 
.N 0.814 670 nm 40 2 
Sol oe 
9.0.6 -30 c» 
S 0.5: F25 © 
S 044 20 = 
© 0.34 ar © 
D 0.2] H10 © 
eh r = 
0.1 sn 
e 0 potu 1 | 0 
  
Tl Tye RE 
21 22 23 24 25 26 27 28 29 30 31 32 
Scene number 
Sun 
  
| * Desert 
— Theoretical value | 
  
Figure 4 The reflectance and degree of polarization variation at 670 nm against viewing angles for "Desert". 
Lambertian surface of À = 0.30 and & = 1.0 is assumed. 
ACKNOWLEDGMENT 
The POLDER level-1 data were used and they were 
obtained from CNES's POLDER on board NASDA's 
ADEOS 
REFERENCES 
Deschamps, P.M., Bréon, F.M., Leroy, M., Podaire, A., 
Bricaud, A., Buriez, J.C., and Séze, G.,1994. The 
POLDER mission: instrument characteristics and science 
objectives. IEEE Trans. Geosci. Remote sensig, 32(3), 
pp. 598-615. 
Takemata, K. and Kawata, Y., 1997. Estimation of 
surface reflection parameters over lands using linear 
polarization data by airborne POLDER. Proc. IGARSS 
'97, pp. 1790-1792. 
Takemata, K., Asae, M., YonekuraT., and Kawata, Y., 
1996. Estimation of bidirectional reflectance distribution 
function from land surfaces using airborne POLDER 
data. Proc. IGARSS '96, pp. 1666-1668. 
Mezdari, H.E., 1997. Mex user manual, version 2.1. 
CNES. 
Hansen, J.E. and Travis, L.D., 1974. Light scattering in 
planetary atmospheres. Space Sci. Rev., 13, pp. 527-610. 
Tanre, D., Deschamps, P.Y., Devaux, C., and Herman,M. 
, 1988. Estimation of Sahara aerosol optical thickness 
from blurring effects in thematic mapper data. Jounal of 
geophysical research, 93(D12), pp. 15955-15964. 
Ontar Corporation, 1995. UnixModWin Manual. 
Rondeaux, G. and Herman, M., Polarization of light 
reflected by crop canopies, Remote Sens. Environ., 38, 
pp. 63-75. 
46 International Archives of Photogrammetry and Remote Sensing. Vol. XXXII, Part 7, Budapest, 1998 
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