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Title
Proceedings of the Symposium on Global and Environmental Monitoring

118
Backscattering coefficient (dB) Backscatterlng coefficient (dB)
Figure 4 :
15
10
5 -
0 -
-5 L.
1.1
0
-5 -
■10 -
■15 -
-20 L
1.1
The backscattering coefficient as
a function of the Tortuosity index
for two angles of incidence (5.3
Hz, Polarization HH)
s
Angle of incidence 0’
s*
s,
9
So
1.2 1.3 1.4 1.5 1.« 1.7 1.8
Tortuosity Index
Angle of incidence 50*
s;
i
S 1
o
So
_i 1 1 « 1 1——i
1.2 1.3 1.4 1.5 1.8 1.7 1.8
Tortuosity index
— Dry
* Dry (only one measurement)
- Wet
0 Wet (only one measurement)
Figure 5: Relationships between the
reflectance in SPOT bands and the
Tortuosity index (T) under wet
and dry soil moisture conditions
(0‘ angle of incidence, midday)
Figure 6 : The effect of the solar illumination
angle on the spectral behavior of
bare soil during slaking (Dry soil
moisture condition, 0* angle of
incidence)
a XS1
□ XS2
. XS3