Fresnel Zone
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Link Planner: Fresnel Zone & Earth Curvature
Path Length (km) Tower 1 Height (m) Tower 2 Height (m)
17 30 30
Fresnel Zone Factor
0.6 2.4
Frequency (GHz)
K-factor
30.0 0.0 6.8 9.8 12.0 13.8 15.2 16.2 17.0 17.6 18.0 18.1 18.0 17.6 17.0
25.0 20.0 Meter
Total Distance Tower to Fresnel Earth Obstructions Earth (km) Tower Zone Curvature on earth Terrain 0.0 30.0 30.0 0.0 0.0 0.0 0.9 30.0 24.0 0.8 0.0 0.8 1.7 30.0 21.7 1.5 0.0 1.5 2.6 30.0 20.1 2.2 0.0 2.2 3.4 30.0 18.9 2.7 0.0 2.7 4.3 30.0 18.0 3.2 0.0 3.2 5.1 30.0 17.3 3.6 0.0 3.6 6.0 30.0 16.8 3.9 0.0 3.9 6.8 30.0 16.5 4.1 0.0 4.1 7.7 30.0 16.3 4.2 0.0 4.2 8.5 30.0 16.2 4.3 0.0 4.3 9.4 30.0 16.3 4.2 0.0 4.2 10.2 30.0 16.5 4.1 0.0 4.1 11.1 30.0 16.8 3.9 0.0 3.9 11.9 30.0 17.3 3.6 0.0 3.6 12.8 30.0 18.0 3.2 0.0 3.2 13.6 30.0 18.9 2.7 0.0 2.7 14.5 30.0 20.1 2.2 0.0 2.2 15.3 30.0 21.7 1.5 0.0 1.5 16.2 30.0 24.0 0.8 0.0 0.8 17.0 30.0 30.0 0.0 0.0 0.0
15.0 10.0 5.0 0.0 0.0
15.2 13.8 12.0 9.8 6.8 0.0
2.0
4.0
6.0
8.0
10.0
12.0
14.0
16.0
18.0
Distance (km) Column C
Column D
Column E
Column G
Note 1: Earth Curvature is based on spherical earth model approximation with radius of 6371 km. Note 2: Atmospheric refraction causes the wavefront to bend towards the higher density region, this is modeled with a typical K-factor of 1.33. Note 3: A Fresnel zone factor of 0.6 with clearance is required for good line of sight reception.
Fresnel Zone
Page 1of 1
06/10/2009
Path Length (km) Tower 1 Height (m) Tower 2 Height (m)
17 30 30
Fresnel Zone Factor
0.6 2.4
Frequency (GHz)
K-factor
30.0 0.0 6.8 9.8 12.0 13.8 15.2 16.2 17.0 17.6 18.0 18.1 18.0 17.6 17.0
25.0 20.0 Meter
Total Distance Tower to Fresnel Earth Obstructions Earth (km) Tower Zone Curvature on earth Terrain 0.0 30.0 30.0 0.0 0.0 0.0 0.9 30.0 24.0 0.8 0.0 0.8 1.7 30.0 21.7 1.5 0.0 1.5 2.6 30.0 20.1 2.2 0.0 2.2 3.4 30.0 18.9 2.7 0.0 2.7 4.3 30.0 18.0 3.2 0.0 3.2 5.1 30.0 17.3 3.6 0.0 3.6 6.0 30.0 16.8 3.9 0.0 3.9 6.8 30.0 16.5 4.1 0.0 4.1 7.7 30.0 16.3 4.2 0.0 4.2 8.5 30.0 16.2 4.3 0.0 4.3 9.4 30.0 16.3 4.2 0.0 4.2 10.2 30.0 16.5 4.1 0.0 4.1 11.1 30.0 16.8 3.9 0.0 3.9 11.9 30.0 17.3 3.6 0.0 3.6 12.8 30.0 18.0 3.2 0.0 3.2 13.6 30.0 18.9 2.7 0.0 2.7 14.5 30.0 20.1 2.2 0.0 2.2 15.3 30.0 21.7 1.5 0.0 1.5 16.2 30.0 24.0 0.8 0.0 0.8 17.0 30.0 30.0 0.0 0.0 0.0
15.0 10.0 5.0 0.0 0.0
15.2 13.8 12.0 9.8 6.8 0.0
2.0
4.0
6.0
8.0
10.0
12.0
14.0
16.0
18.0
Distance (km) Column C
Column D
Column E
Column G
Note 1: Earth Curvature is based on spherical earth model approximation with radius of 6371 km. Note 2: Atmospheric refraction causes the wavefront to bend towards the higher density region, this is modeled with a typical K-factor of 1.33. Note 3: A Fresnel zone factor of 0.6 with clearance is required for good line of sight reception.
Fresnel Zone
Page 1of 1
06/10/2009
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