Annex 1 Maximum e.i.r.p. density
of radio-relay system transmitters operating in the band 25.25-27.5 GHz shared
with the inter-satellite service
1 Introduction
2 System models
2.1 Radio-relay deployment in the band 25.25-27.5 GHz
2.2 Deployment of DRSs satellites that use space-to-space links in the
inter-satellite service
3 Interference assessment
3.1 DRS protection criteria
3.2 Main beam interference
3.3 Aggregate interference
4 Interference mitigation techniques
4.1 FS systems
4.2 DRS systems
4.3 Cooperative sharing framework
5 Conclusions
Annex 2 Method for calculating separation angles between FS transmitting
antenna beams and the directions towards geostationary data relay satellites
1 Introduction
2 FS station parameters
3 Determination of the azimuth of the satellite
4 Determination of the elevation of the satellite
5 Determination of the separation angle
Appendix 1 to Annex 2
Annex 3 Interference mitigation through diffraction attenuation
1 Introduction
2 Basic calculations of diffraction attenuation
3 Examples of diffraction attenuation
4 Variability of diffraction attenuation in DRS interference exposures
5 FS link design and implementation practices that increase the
effectiveness of interference mitigation through diffraction attenuation
6 Summary and conclusions