Geneva hosted last 19-28 May the third meeting in the 2008-2011 study cycle of working party 5B (WP 5B) on mobile maritime service, including the Global Maritime Distress and Safety System (GMDSS), mobile aeronautic service and radio-determination service of ITU-R study group 5 (SG 5).
Some 165 documents were submitted for consideration by WP 5B, distributed according to the respective issues among three subgroups as follows:
• Subgroup 5B-1 – Radio-determination;
• Subgroup 5B-2 - Aeronautic;
• Subgroup 5B-3 - Maritime.
The following situations are noteworthy among the examined issues:
• Completion of the revision of Recommendations ITU-R M.585-4 on assignment and use of maritime mobile service identity (MMSI) and ITUR-R 493-12 on DSC mathematical requirements for radar antenna systems for use in interference analyses;
• Completion of the revision of Recommendation ITU-R M.1730 on “Characteristics of and Protection Criteria for the Radiolocation Service in the Frequency Band 15.4-17.3”.
• Revision of the new Recommendation on technical and operational functioning characteristics of oceanographic radars in the 3-50 MHz frequency band;
• Revision of Recommendation ITU-R M.1802 on characteristics and protection criteria for radars operating in the 30-300 MHz frequency band;
• Revision of Report ITU-R M.2120 concerning estimated new spectrum requirements for aviation;
• Revision of new Report on compatibility between Satellite Radionavigation Service with the Services’ receivers in the 1215-1300 MHz frequency band;
• Completion of the new report on evaluation of potential interference between broadcasting stations in the 87-108 MHz band and VDL Mode 4 aeronautic systems in the 112-117.975 MHz band;
• Revision of the new report on compatibility between digital audio broadcasting in the 87-108 MHz band and aeronautic radionavigation service in the 108-117.975 band and aeronautic mobile service (route) in the 117.975-137 MHz band;
• Revision of the new report on technical characteristics and operational requirements in wireless avionics intra-communications (WAIC);
• Revision of the new report on the frequency band for control of unmanned aircraft systems (UAS);
• Continuation of work on revising the Appendix 17 channelling with view to implementing new digital technologies for maritime mobile service;
• Accompaniment of the study on the future list IV which includes content from the current Lists IV and VI, future list V with new content and the proposed revision of the format and content of the future maritime manual;
• Continuation of work on revision of the new report on improved AIS satellite detection.
