RECOMMENDATION ITU-R S.1257-3 - Analytical method to calculate short-term visibility and interference statistics for non-geos
ANNEX 1
APPENDIX 1 TO ANNEX 1 - Calculation of the needed discrimination angle for a given interference level
APPENDIX 2 TO ANNEX 1 - Calculation of in-area statistics for non-GSO satellites
1 Introduction
2 Symbols used (in Appendix 2 and Appendix 3)
3 Calculation of probability
APPENDIX 3* TO ANNEX 1 - Derivation of the formulae given in Appendix 2
1 Probability that a satellite is in a given area
2 Calculation of the area
3 Simulation programme
4 Verification of the formulae
5 Visibility and worst-case azimuth
6 Conclusion
ANNEX 2
1 Summary
2 Derivation
3 Verification
4 Range of applicability
ANNEX 3
1 Summary
2 Relative orientation of the non-GSO satellite track and the GSO earth station antenna beam
3 Average length of path through the ellipsoid
4 Effective angular velocity
5 Average duration of interference events
6 Frequency of occurrence of interference events
7 Verification