Recommendation ITU-R P.530-19
Policy on Intellectual Property Right (IPR)
Annex
1
Introduction
1.1 Integral digital products
2
Propagation loss
2.1 Attenuation due to atmospheric gases
2.2 Diffraction fading
2.2.1 Diffraction loss
dependence on path clearance
2.2.2 Planning criteria for
path clearance
2.3 Fading and enhancement due to multipath and
related mechanisms
2.3.1 Method for small
percentages of time
2.3.2 Method for all
percentages of time
2.3.3 Prediction method for
enhancement
2.3.4 Conversion from average
worst month to average annual distributions
2.3.5 Conversion from average
worst month to shorter worst periods of time
2.3.6 Prediction of
non-selective outage (see Note 1)
2.3.7 Occurrence of
simultaneous fading on multi-hop links
2.3.8 Statistical data on the
number of attenuation events lasting for 10 s or longer due to multipath
propagation
2.4 Attenuation due to hydrometeors
2.4.1 Long-term statistics of
rain attenuation
2.4.2 Combined method for rain
and wet snow
2.4.3 Frequency scaling of
long-term statistics of rain attenuation
2.4.4 Polarization scaling of
long-term statistics of rain attenuation
2.4.5 Statistics of event
duration and number of events
2.4.6 Rain attenuation in
multiple hop networks
2.4.7 Prediction of outage due
to precipitation
3
Variation in angle-of-arrival/launch
4
Reduction of cross-polar discrimination (XPD)
4.1 Prediction of XPD outage due to clear-air
effects
4.2 Prediction of XPD outage due to
precipitation effects
4.2.1 XPD statistics during
precipitation conditions
4.2.2 Step-by-step procedure
for predicting outage due to precipitation effects
5
Distortion due to propagation effects
5.1 Prediction of outage in unprotected digital
systems
6
Techniques for alleviating the effects of multipath
propagation
6.1 Techniques without diversity
6.1.1 Increase of path
inclination
6.1.2 Reduction of effect of
surface reflections
6.1.3 Reduction of path
clearance
6.2 Diversity techniques
6.2.1 Antenna spacing in space
diversity systems
6.2.2 Angular spacing in
angle-diversity and combined space/angle-diversity systems
6.2.3 Frequency separation in
frequency diversity systems
6.2.4 Space-diversity
improvement in narrow-band systems
6.2.5 Diversity techniques in
digital systems
7
Prediction of total outage
8
Propagation aspects of bringing-into-service
Attachment to the Annex Method for determining the
geoclimatic factor, K, from measured overland fading data