ITU R S 1525:2002
ITU R S 1525:2002 Impact Of Interference From The Sun Into A Geostationary-satellite Orbit Fixed-satellite Service Link
Table of Contents
ANNEX1-CalculationofthelevelofinterferencefromtheSunintoaGSOFSSlink
1Generalapproach
2Applicationofthemethodologytodifferentantennasizes
3Variationduringaday
ANNEX2-SimplifiedmethodtocalculatetheSuntransitperiod
foraGSOearthstation
1Introduction
2Satelliteephemerisdata
3PredictedSuntransitperiods
3.1CoordinatesystemforcalculatingSuntransit
3.2CalculatingthecoordinatesoftheSun
3.3CalculatingtherightascensionoftheSun
3.4CalculatingthetimeofSuntransit
3.5Approximatevalues
3.5.1Thenumberofaffecteddays
3.5.2Themaximumduration
3.5.3Totaldurationateachequinox