ITU R F 1108:2005
ITU R F 1108:2005 Determination Of The Criteria To Protect Fixed Service Receivers From The Emissions Of Space Stations Operating In Non-geostationary Orbits In Shared Frequency Bands
Table of Contents
Annex1-Determinationofthevisibilitystatisticsofspacestationsoperatingincircular
non-geosynchronousorbitsasseenbyaterrestrial
station
1Introduction
2Thesatelliteintheinertialframe
3TransformationtoEarthcoordinates
4Distanceandazimuthtoaterrestrialstation
5Satelliteelevationandangulardistancefrommainbeam
Annex2-Simulationofinterferenceintoanaloguefixed
wirelessroutesfromLEOsatellites
1Introduction
2Descriptionofthemodel
2.1Input
2.2Output
3Simulationresults
4Conclusions
Annex3-Determinationoftheeffectsofemissionsfromspace
stationsnon-GSOonFSdigitalmicrowavereceivers
1Introduction
2Statisticalmodelling
3Interferencedetermination
4Modellingtheeffectofinterferenceondigitalsystems
5AnalternativederivationofFDP
6Sampleresultsofsimulation
7Interimconclusions
Annex4-Methodologytodeterminetheeffectofinterference
ondigitalreceiversemployingdiversity
1Introduction
2Switcheddiversity
3Maximumpowercombining
4Diversityfademarginloss(DFML)
5Summary
Annex5-Considerationsoftheuniformityoftheinterference
environmentinamonth
Annex6-Themethodologyfordevelopingthecumulative
distributionoftheratioofreceivedpowertothe
sumofnoiseandinterferencepowersfromresultsof
simulationsoftheemissionsfromconstellationsof
non-GSOspacestations
1RelationshipbetweenC/IandC/(N+I)
2Modellingthecumulativedistributionoffadedepth
3Anexample
4Conclusions
Annex7-Analyticalmethodforevaluatingtheinterferenceto
astationintheFSfromanon-GSOsatellite
constellationusingcircularorellipticalorbits
includingHEOs
1Introduction