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

7-18
Percentage of Distance Fade > Abscissa
100
9
8
7
6
5
4
3
2
10
9
8
7
6
5
1
4
3
2
Propagation Effects for Vehicular and Personal Mobile Satellite Systems
Legend
295 S,RL,HR
295 N, RL, HR
295 S, LL, HR
295 N, LL, HR
108 SW, HL
108 NE, HL
32 N, HL
32 S, HL
EERS Predicted
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30
Fade (dB)
Figure 7-19: Cumulative distributions at UHF (870 MHz) for elevation angle = 45° from
mobile measurements made with a helicopter transmitter platform along eight roads in
central Maryland [Goldhirsh and Vogel, 1989]. Solid curve is EERS prediction.
Percentage of Distance Fade > Abscissa
100
9
8
7
6
5
4
3
2
10
9
8
7
6
5
1
4
3
2
Legend
295S,RL, HR
295 N, RL, HR
295 S, LL, HR
295 N, LL, HR
108 SW, HL
108 NE, HL
32 N, HL
32 S, HL
EERS Predicted
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30
Fade (dB)
Figure 7-20: Cumulative distributions at UHF (870 MHz) for elevation angle = 60° from
mobile measurements made with a helicopter transmitter platform along eight roads in
central-Maryland [Goldhirsh and Vogel, 1989]. Solid curve is EERS prediction.