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