Policy on Intellectual Property Right (IPR)
1 Introduction
2 Interference protection criteria for automatic identification system and
VHF marine radios from interfering radiation sources
2.1 For the VHF marine radio receiver and the automatic
identification system receiver
2.1.1 Assessing the efficacy of the current
electromagnetic interference standards for this application
2.1.2 Information needed for this application
2.1.3 Necessary adjustments to current standards to fit
this application
2.2 Conclusions
3 Interference protection criteria for marine global navigation satellite
system receivers from interfering radiation sources
3.1 Adjustments for standard resolution bandwidth
3.2 Comparing these levels to current standards
3.2.1 Results of comparison to current standards
3.2.2 Measurements by an electromagnetic interference
certification laboratory
3.2.3 Conclusion
4 Summary of results
4.1 Important precautions for avoiding interference when using
light emitting diode lamps
4.2 Separate light emitting diode lamps from sensitive antennas
4.3 Use vertical separation wherever possible
4.4 Testing for interference following installation
4.4.1 Test the VHF marine radio for interference
4.4.2 Alternative method using received signal strength
indication to test the VHF marine radio for interference
4.4.3 Test the automatic identification system for
interference
4.4.4 Test the global navigation satellite system for
interference
Annex 1 Protection criteria for the VHF data exchange system
1 VHF data exchange system satellite system characteristics
2 VHF data exchange system satellite downlink budget
3 VHF data exchange system satellite downlink power flux-density and noise
plus interference levels
4 Protection for the VHF data exchange system satellite downlink
(refer to Recommendation ITU-R M.2092)
5 Relating VHF data exchange system interference protection to CISPR 25
Class 5 test levels
6 Protection for the automatic identification system
7 Conclusions
Annex 2 VHF and automatic identification system installation electromagnetic
compatibility test results
Annex 3 Review of emission limits in the global navigation satellite service
frequency bands