ITU R SM 1542:2001
ITU R SM 1542:2001 The Protection Of Passive Services From Unwanted Emissions
Table of Contents
ANNEX1-Vulnerabilityofpassiveservices1.Satellitepassiveremotesensing
2.Radioastronomy
ANNEX2-Mitigationtechniquesthatmaybeused
atthetransmitter
1.Fixed-satelliteservice(FSS)systems
1.1RFfilterstoreduceunwantedemissions
1.2Siteshielding
1.3Shapedantennapatterns
2.Radarsystems
2.1Operationalmeasures
2.2Replacementoftransmitterdevice
2.3RFfilterinstallationintheradartransmitter
3.Broadcasting-satelliteservice(BSS)systems
4.Mobile-satelliteservice(MSS)systems
5.HAPSsystems
6.FSHDFSapplications
ANNEX3-Mitigationtechniquesthatmaybeusedby
passiveservices
1.Spacebornepassivesensors
1.1Receiverarchitecture
1.2AnaloguefilteringateithertheRFor
intermediatefrequency(IF)stages
1.3Antennapatterns
1.4Interferenceexcisiontechniques
1.5Digitaladaptiveinterferencecancelling
1.6Adjustmentofsensitivitylevelsandband-by-band
studies
1.7Timesharing
1.8Shieldingattheprimefocusofparabolicreceiving
antennas
1.9Useoforbitalgeometry
2.Radioastronomyreceivers
2.1Siteshieldingandsiteselection
2.2Quietzonesandcoordinationzones
2.3Receiverarchitecture
2.4Antennapatterns
2.5AnaloguefilteringateitherRForIFstages
2.6Interference-excisiontechniques
2.7Digitaladaptiveinterferencecancellation
2.8Adjustmentofsensitivitylevels
2.9Cooperativesolutions
2.10Guardbands
ANNEX4-Listoftransmitter/passivebandpairsthatare
mostproblematicandband-by-bandstudies