Policy on Intellectual Property Right (IPR)
Annex 1
1 Introduction
2 Model elements of the
propagation prediction method
3 Input parameters
3.1 Basic input data
3.2 Radio path profile
3.3 Radio-climatic zones
3.4 Terminal distances
from the coast
3.5 Basic
radio-meteorological parameters
3.6 Incidence of ducting
3.7 Effective Earth radius
3.8 Parameters derived
from the path profile analysis
4 The prediction procedure
4.1 General
4.2 Line-of-sight propagation
(including short-term effects)
4.3 Propagation by
diffraction
4.3.1 The
Bullington part of the diffraction calculation
4.3.2 Spherical-Earth
diffraction loss
4.3.3 First-term
part of spherical-Earth diffraction loss
4.3.4 Complete
“delta-Bullington” diffraction loss model
4.3.5 The
diffraction loss not exceeded for p% of the time
4.4 Propagation by
tropospheric scatter
4.5 Propagation by
ducting/layer reflection
4.6 Basic transmission
loss not exceeded for p% time and 50% locations
4.7 Location variability
of losses
4.8 Building entry loss
4.9 Basic transmission
loss not exceeded for p% time and pL% locations
4.10 The field strength
exceeded for p% time and pL% locations
Attachment 1 to Annex 1 Path profile analysis
1 Introduction
2 Construction of path profile
3 Path length
4 Path classification
5 Derivation of parameters from
the path profile
5.1 Transmitting antenna
horizon elevation angle above the local horizontal, θt
5.2 Transmitting antenna
horizon distance, dlt
5.3 Receiving antenna
horizon elevation angle above the local horizontal, θr
5.4 Receiving antenna
horizon distance, dlr
5.5 Angular distance θ (mrad)
5.6 “Smooth-Earth” model
and effective antenna heights
5.6.1 Deriving
the smooth-Earth surface
5.6.2 Smooth-surface
heights for the diffraction model
Attachment 2 to Annex 1 An approximation to the inverse complementary
cumulative normal distribution function
Attachment 3 to Annex 1 An alternative method to calculate the spherical earth
diffraction loss Lbulls