RECOMMENDATION ITU-R SF.765 * - Intersection of radio-relay antenna beams with orbits used by space ...
ANNEX 1** - General considerations concerning the intersection of radio-relay antenna beams with orbits ...
1. Introduction
2. Some characteristics of the antenna beams of terrestrial radio-relay 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 ...
1. Introduction
2. Preliminary calculations
    2.1 Preliminary elimination
    2.2 Classification of main beam directions
3. Preliminary determination of the separation angle
4. Detailed calculations of the separation angle
APPENDIX I  - TO ANNEX 2