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GNSS Seminar in Varadero, Cuba - May 2002

Overview of GNSS technology and its applications presented at the seminar in Varadero, Cuba in May 2002. Topics covered include GNSS standardization, operational and institutional issues, economics, and GNSS transition planning.

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GNSS Seminar in Varadero, Cuba - May 2002

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  1. ATN/GNSS SeminarVaradero, Cuba6 to 9 May 2002Overview of GNSS Presentation GNSS 1.1 by V. Iatsouk, GNSS Panel Secretary ANB/ICAO

  2. ICAO definition of GNSS A world-wide position and time determination system, that includes: • one or more satellite constellations • aircraft receivers • system integrity monitoring augmented as necessary to support the required navigation performance for the intended operation • .

  3. GNSS-related work areas • GNSS standardization (SARPs) • Operational issues • Institutional and legal issues • Economics • GNSS transition planning

  4. GNSS standardizationmethodology • Core elements (satellite constellations) • Augmentations • Non-aircraft and aircraft elements • Evolutionary integration of new elements

  5. Scope of GNSS SARPs (Annex 10, Volume I, applicable as of 1 November 2001) • Establish GNSS as a new standard aid to: • navigation; and • approach and landing

  6. Scope of GNSS SARPs • GNSS elements defined: • GPS • GLONASS • aircraft-based augmentation system(ABAS) • satellite-based augmentation system (SBAS) • ground-based augmentation system (GBAS • receivers (essential characteristics)

  7. Present GNSS capabilitiesdefined in SARPs • Six performance levels and respective functionalities defined for: • en-route • non-precision approach (NPA) • approach with vertical guidance (APV) • Category I precision approach • Other performance levels yet to be defined

  8. APV types • LNAV/ BaroVNAV • APV-I • APV-II

  9. GNSS performance levels by alert limits

  10. Recent GNSS enhancements(Amendment 77 to Annex 10) • SBAS Message Type 28 • GBAS positioning service • GLONASS-related requirements for SBAS and GBAS

  11. Status of GNSS elements • GPS • 28 SVs operational, modernization programme under way • Block IIR-M SV (L2C) launches to begin 2003 • Block IIF SV (L5) launches to begin 2005

  12. Status of GNSS elements (cont’d) • GLONASS • 9 SVs in orbit, 6 operational without limitations • plans to expand up to 18-20 SVs by 2005 including GLONASS-M • planning for GLONASS-K after 2010

  13. Status of GNSS elements (cont’d) • GALILEO • Funding for development phase released • Development and validation (2002-2005) • Deployment (2006-2007) • Operational phase 2008 • SBAS (WAAS, EGNOS, MSAS) • Operational 2003-2005

  14. Status of GNSS elements (cont’d) • GBAS • two basic configurations (Cat I PA & Cat I PA with GBAS positioning service) • VHF data broadcast options with horizontal (GBAS/H) and elliptical (GBAS/E) polarization • certified Cat I GBAS stations in US (LAAS) and Europe in 2002-2003 time frame

  15. Status of GNSS elements (cont’d) • ABAS avionics: • RTCA (EUROCAE) MOPS/MASPS • RTCA DO-208 • EUROCAE ED-72A • FAA Technical Standard Order (TSO) • TSO-C129A Level 2 (En route/Terminal) • TSO-C129A Levels 1 or 3 (NPA)

  16. Status of GNSS elements (cont’d) • SBAS avionics: • RTCA (EUROCAE) MOPS/MASPS • RTCA DO-229C • EUROCAE (under development) • FAA Technical Standard Order (TSO) • TSO-C145 • TSO-C146

  17. Status of GNSS elements (cont’d) • GBAS avionics: • RTCA (EUROCAE) MOPS/MASPS • RTCA DO-24, 246 and 253 • EUROCAE ED-95 • FAA Technical Standard Order (TSO) • under development

  18. Further work on GNSS • GRAS (ground-based regional augmentation system) • GLONASS-M • GPS L5 • GALILEO • Category II/III GBAS • architectures to support aerodrome surface operations, guided take-off, curved approaches

  19. Status in related areas • Transition to WGS-84 • Data base quality and integrity • RF spectrum protection • Procedures, criteria, phraseologies, charts • Institutional and legal issues • Costs and cost/benefit issues

  20. WGS-84 and data base quality • Steadyprogressisbeingmade • SomeStatesnotifieddifferences • Global implementation of GNSS not possible before world-wide compliance is achieved

  21. GNSS spectrum aspects • Current allocations • Allocations to support system enhancements and expansion • RF compatibility issues

  22. Operational issues • PANS-OPS criteria for basic GPS receiver available • Criteria for SBAS and GBAS approach procedures under development • Phraseologies and charting requirements under development • NOTAM procedures reviewed • Flight plan information reviewed

  23. GNSS legal/institutional issues • ICAO Assembly Resolutions A32-19 and A32-20 • Work on legal aspects of CNS/ATM systems in progress • 33 rd Session of Assembly reviewed status of work

  24. Costs and cost allocations • Assembly Resolution A32-19 • Cost allocation issues • multi-modal services • allocation options • Studies to continue

  25. COM/OPS/95 Strategy(Annex 10, Volume I, Attachment B) • Flexibility versus single standard • Three standard systems included: • ILS: Fully implemented; some sustainability issues exist or perceived • MLS: Limited implementation; Categories I, II and III capability is proven and available • GNSS: Category I capability to be validated; feasibility studies for Categories II and III to continue • MMR implementation encouraged • Time frames projections: • Category I GNSS available 2000-2005 • Category II, III GNSS available 2005-2015

  26. Major trends since COM/OPS/95 • GPS-based operations spreading (en-route, NPA) • Augmentations development progresses with delays • GLONASS declined • GNSS (GPS) vulnerability recognized • “Sole means” concept no longer advocated • Development of new GNSS elements advances(GPS L5, Galileo) • Marginal user support for SBAS and GBAS services

  27. Policy aspects • Emerging navigation issues require: • revisions of the ICAO Global Air Navigation Plan for CNS/ATM Systems • updates of the ICAO strategy for approach and landing operations • amendments to SARPs affected by GNSS introduction • Need for ICAO meeting established to review GNSS development status and navigation strategy

  28. Conclusions • Transition to satellite navigation is a long term commitment • ICAO and industry standards available to support near-term and mid-term applications • SBAS service, GBAS stations and respective avionics will be generally available in the near term • Near-term focus to continue on approvals for en-route (oceanic and remote), terminal and NPA operations using basic GPS avionics • Mid-term focus on SBAS-based APV and GBAS-based Category I PA

  29. Conclusions (cont’d) • Two core satellite systems and dual frequency operations to begin beyond 2010 • User community commitment to transition is crucial factor • ICAO 11th Air Navigation Conference (22 September-3 October 2003) to review GNSS status and navigation policy issues

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