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DFMC

DFMC. Definition Document. IWG. Jason Burns. Jed Dennis. Feb 5-7, 2014. Purpose. Review status of Definition Document Review development timeline. Definition Document Status. Definition Document outline presented at IWG-24 Slides in backup to this presentation

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DFMC

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  1. DFMC Definition Document IWG Jason Burns Jed Dennis Feb 5-7, 2014

  2. Purpose • Review status of Definition Document • Review development timeline

  3. Definition Document Status • Definition Document outline presented at IWG-24 • Slides in backup to this presentation • Word document “DFMC_Def_Doc_Outline_v3_06a” • Updated Definition Document outline provided at IWG-25 • Word document „DFMC Def Doc Outline v3 07“ • No updates for this period • No IWG decisions or white papers to incorporate • Received only a few comments

  4. Definition Document Plan • Work plan target to complete by end of 2014 • Should this go until IWG-28 ? • Expect several white papers in April 2014 • Based on briefs presented at this IWG • Will incorporate and provide draft May-June 2014 timeframe Jun 2014 IWG 27 Need comments Sept – Oct 2014 IWG members Provide comments Dec 2014 ? Definition Document April 2014 White Papers Nov 2014 Comment ResolutionTelecons Sept 2014 Update released May-Jun 2014 Update released IWG 26 Feb 2014

  5. Quesitons • Please provide comments to • joseph.ctr.dennis@faa.gov • jason.burns@faa.gov

  6. Backup

  7. Sections • Introductory and conceptual operations • SBAS System Functional Requirements • SBAS Element Functional Requirements • SBAS Signal in Space • External Interactions • Contributors • Acronym List

  8. Section 1 Notable Differences between DFMC and Legacy L1 SBAS 1.1 Introduction 1.2 Document Overview 1.3 System Overview 1.4 Operational Goals and Applications 1.4.1 Operational Goals 1.4.2 Intended Operations 1.4.3 Operational Environment (Actors) 1.4.4 Operational Concepts 1.5 Services - Brief description, details in section 2.3 1.6 Benefits 1.7 Assumptions 1.8 Reference Documents DFMC Operational Goals • Vertical guidance in areas not supported by current SBAS standards (i.e. single frequency user) • Improved availability • Improved performance potentially enabling of additional operations (e.g. Autoland)

  9. Intended Operations • Subject to refinement in other tasks defined in the work plan • Mandatory • Horizontal navigation (e.g. LNAV) • Horizontal and Vertical navigation (e.g. LPV, LPV-200, VNAV) • Surveillance (e.g. ADS-B) • Optional / Under consideration • Autoland • Surface Movement

  10. Operational Concepts - General

  11. Operational Concepts - Airborne

  12. Section 2 – SBAS Functional Requirements 2.1 Performance • Navigation Performance: Annex 10, Table 3.7.2.4-1 and fault-free and faulted vertical accuracy requirements • Surveillance 2.2 General Requirements • Navigation Information (Annex 10, Section 3.7.3.4.6) • Radio Frequency Interference • Signal Processing Requirements (i.e. expected power and noise) • Safety Methodology • Threats • Alerting 2.3 Services / Functions • See next slide

  13. Section 2 – SBAS Functional Requirements BA: Broadcast Area; RS: Reference Stations; N/A: Not Applicable 2.1 Performance 2.2 General Requirements 2.3 Services / Functions – Follows Annex 10

  14. Section 3 – Element Requirements 3.1 Non-airborne • Accuracy, integrity, continuity • Interaction with other SBAS / Almanac • Functional requirements 3.2 Ranging Signal • Reference ICAO Annex 10, Section 3.7.3.4.2.1 and B 3.5.2 • L1/L5 coherence and signal deformation, phase noise 3.3 Airborne • DFMC SBAS capable receiver • Specific receiver requirements (ie # of channels, correlator spacing) • Functional requirements • Conditions for use of data

  15. Section 4 – Signal in Space 4.1 Data Structure • Physical Signal Description • Same header structure, copy from Annex 10 4.2 Data Content • Header, preamble same as L1, copy from Annex 10 • L5 Message details subject of work plan effort • L1 Message reference ICAO Annex 10, B 3.5.2 4.3 Data protocols (DEFINITIONS OF PROTOCOLS FOR DATA APPLICATION) • L5 Equations for use of data subject of work plan effort • L1 Equations reference ICAO Annex 10, B 3.5.2

  16. Section 5 – External Interactions Discusses interaction of SBAS service providers and Air Navigation Service Providers (ANSP), particularly when the ANSP is not an SBAS service provider 5.1 SBAS Service Provider • Service agreements with ANSP, if required 5.2 Air Navigation Service Provider • GNSS Monitoring / Acceptance • Approved Service Area (Operational Volume) • FAS Data Generation 5.5 GNSS Service Provider • Non-binding • Captures SBAS provider expectations of GNSS providers

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