Policy on Intellectual Property Right (IPR)
Annex 1 General considerations concerning the intersection of
radio-relay antenna beams with orbits used by space stations in the
fixed-satellite service
1 Introduction
2 Some characteristics of the
antenna beams of terrestrial fixed wireless systems
3 Directions to circular
equatorial orbits
4 Unphased satellite systems
5 Geometric relations between the
directions of radio‑relay antennas and the geostationary‑satellite
orbit
5.1 The effects of
atmospheric refraction
5.2 Use of a graphical
method for determination of azimuths to be avoided
5.3 Analytical method
Annex 2 Analytical method for calculating separation angles
between radio-relay antenna beams and the geostationary-satellite orbit
1 Introduction
2 Preliminary calculations
2.1 Preliminary
elimination
2.2 Classification of main
beam directions
3 Preliminary determination of
the separation angle
Zone 1
Zone 2
Zone 3
Zone 4
Zone 5
Zone 6
Zone 7
Zone 8
4 Detailed calculations of the
separation angle
Appendix 1 to Annex 2 A computer
program for calculating separation angles