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ITU-R Sg.8 Seminar The Global Maritime Distress and Safety System (GMDSS)

ITU-R Sg.8 Seminar The Global Maritime Distress and Safety System (GMDSS). Eirik Bliksrud Norwegian Post and Telecommunications Authority. The (Future) Global Maritime Distress and Safety System. Planned in the -70s/-80s to replace morse: Automatic, not manual

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ITU-R Sg.8 Seminar The Global Maritime Distress and Safety System (GMDSS)

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  1. ITU-R Sg.8 SeminarThe Global Maritime Distress and Safety System(GMDSS) Eirik Bliksrud Norwegian Post and Telecommunications Authority

  2. The (Future) Global Maritime Distress and Safety System Planned in the -70s/-80s to replace morse: Automatic, not manual New technology: digital modulation satellite systems

  3. Fulfil 9 functional requirements wherever it is Alert shore and ships Communicate Be located Receive safety information

  4. Sea areas A1: VHF - Line of sight A2: MF - Ground wave A3: Inmarsat – GSO A4: HF - Reflections

  5. Radiosystems in the GMDSS VHF, MF and HF: DSC, voice, data Inmarsat: Voice, data, nav.info NAVTEX: Nav. Information COSPAS-SARSAT: EPIRBs

  6. Digital Selective Calling (DSC) Call individual or groups of stations Distress, safety, routine calls Contains identity, position and other info 100/1200 b/s Time diversity

  7. WRC-07 Agenda 1.14: Review of the GMDSS Listening watch on ch. 16 Digitalisation of VHF (Appendix 18) Digitalisation of HF New data systems: HF internet

  8. New systems in GMDSS? New satellite systems ? IMT-2000 ? Coverage Priority Pouting to RCC Globally implemented On-scene communications

  9. GMDSS Not so fancy Not so modern Serves well, saves lives Simple, robust systems/equipment True global compatibility Still not fully implemented Changes are slow to implement

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