0
0
σ HH (dB)
σ VV (dB)
0
0
-5
-5
-10
-10
-15
-15
-20
-20
-25
-25
-30
-30
-35
-35
-40
-40
5
5
-45
-45
4.5
4.5
-20dB
-20dB
-4dB
-4dB
-6dB
-6dB
-8dB
-8dB
-50
-50
4
4
-30dB 3 .5
3
-30dB 3 .5
3
LP (cm)
LP (cm)
-10dB
-10dB
2.5
2.5
2
2
-15dB
-15dB
1.5
1.5
1
1
0
0
0.5
0.5
1
1
1.5
1.5
2
2
2.5
2.5
3
3
3.5
3.5
4
4
σP (cm)
σP (cm)
o
o
Fig. 11a, incidence angle 20
Fig. 11b, incidence angle 20
0
0
σ
σ
(dB)
(dB)
HH
VV
0
0
-5
-5
-10
-10
-15
-15
-20
-20
-25
-25
-30
-30
-35
-35
-40
-40
5
5
-5dB
-5dB
-6dB
-6dB
-8dB
-8dB
-45
-45
4.5
4.5
-20dB
-20dB
-50
-50
4
4
-30dB 3 .5
3
-30dB 3 .5
3
-10dB
-10dB
LP (cm)
LP (cm)
2.5
2.5
2
2
-15dB
-15dB
1.5
1.5
1
1
0
0
0.5
0.5
1
1
1.5
1.5
2
2
2.5
2.5
3
3
3.5
3.5
4
4
σP (cm)
σP (cm)
Fig. 11c, incidence angle 30o
Fig. 11d, incidence angle 30o
σ0HH (dB)
σ0VV (dB)
0
0
-10
-10
-20
-20
-30
-30
-40
-40
5
5
-6dB
-6dB
-7dB
-7dB
-50
-50
-20dB 4.5
-20dB 4.5
-8dB
-8dB
4
4
3.5
3.5
-30dB 3
-30dB 3
LP (cm)
LP (cm)
-10dB
-10dB
2.5
2.5
-40dB 2
-40dB 2
-15dB
-15dB
1.5
1.5
1
1
0
0
0.5
0.5
1
1
1.5
1.5
2
2
2.5
2.5
3
3
3.5
3.5
4
4
σP (cm)
σP (cm)
Fig. 11e, incidence angle 40o
Fig. 11f, incidence angle 40o