ITU R M 1748:2006
ITU R M 1748:2006 Protection Of The Radio Astronomy Service In The Band 1400-1427 Mhz From Unwanted Emissions Of Mss Feeder Links That May Operate In The Bands 1390-1392 Mhz (earth-to-space) And 1430-1432 Mhz (space-to-earth)
Table of Contents
Annex1-Examplecalculationofthepfdpersatelliterequiredtorespectepfdlimitsfortheprotectionoftheradio
astronomyserviceoperatingintheband1400-1427MHz
fromunwantedemissionsofMSSfeederlinksthatmay
operateintheband1430-1432MHz
1Methodology
2MSSsystemcharacteristics
3RASstationcharacteristicsandprotectioncriteria
4Determinationoftherequiredmaximumpfdpersatellitelevel
fortheprotectionoftheradioastronomyservice
4.1Procedure
4.2Results
5Conclusions
Annex2-Separationdistancebetweenradioastronomystations
operatingintheband1400-1427MHzandMSSfeeder-link
earthstationsthatmayoperateintheband1390-1392MHz
1Introduction
2Methodology
3RadioastronomystationantennagaintowardstheMSSfeeder-link
earthstation
4MSSfeeder-linkearthstationantennagaintowardstheradio
astronomystation
5DerivationofpropagationlosseswiththeMonte-Carlo
methodology
6Derivationoftheprotectiondistancefromthepropagation
attenuation