Handbook of Propagation Effects for Vehicular and ... - Courses

7-10
Probability Fade > Abscissa (%)
100
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8
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4
3
2
10
9
8
7
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5
1
4
3
2
Propagation Effects for Vehicular and Personal Mobile Satellite Systems
Elevation Angle
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Fade (dB)
Figure 7-9: Distributions from S-Band measurements (2.6 GHz) at various elevation
angles for tree-lined road [Smith et. al, 1993].
Figure 7-10 shows distributions at 60° at L-Band (1.3 GHz ), S-Band (2.5 GHz) and
Ku-Band (10.4 GHz) for a wooded environment in England as measured using a
transmitter on a helicopter platform [Butt et al., 1992]. The measurements were executed
along a 7 km “heavily wooded” stretch of a B-type road (less than 4 m wide). Shown in
Figure 7-11 are 80° distributions at L-Band and Ku-Band. By way of contrast, Figure 7-
12 and Figure 7-13 show similar sets of curves for a “suburban environment.”
40°
60°
80°