Presented to: IWG 26 By: Jason Burns (FAA) Date: February 5-7, 2014 Federal Aviation Administration DFMC Work Plan Update

2 Federal Aviation Administration DFMC Work Plan February 5-7, 2014 Outline Background / Purpose Task Progress Review Discussion areas

3 Federal Aviation Administration DFMC Work Plan February 5-7, 2014 Background and Purpose IWG has identified the need for a DFMC Definition Document outlining a requirements concept for Dual Frequency Multi-Constellation (DFMC) SBAS A draft work plan to develop this document was presented at Ottawa 2012 (IWG-23) –Presented again at IWG-24 This work plan status update –Identifies efforts in progress Should assess progress based on presentations –Identifies areas with little to no effort 3

4 Federal Aviation Administration DFMC Work Plan February 5-7, 2014 Tasks Operational Concept –Operational Goals and Services –GEO Selection and Transition –Reversionary Modes –Identify Benefits System Requirements –Interchangeable Satellites –Safety Strategy –Avionics Design Constraints Interface Definition –Interface Requirements –Interface Control Document Definition Document

5 Federal Aviation Administration DFMC Work Plan February 5-7, 2014 Operational Goals and Services Objectives –Identify minimum target operations and supporting services –Propose service classification schemes for coordination with standards bodies Status –Initial proposed operational targets discussed at IWG 23. Documented in Work Plan Section 2 –Fairly well documented in Definition Document outline Contains no new services or operations beyond current DO-229 –Need to update if there are specific changes for ADS-B or TBO

6 Federal Aviation Administration DFMC Work Plan February 5-7, 2014 GEO Selection and Transition Objectives –Enable SBAS interoperability when transition between different operations, GEO coverage volumes, SBAS service volumes, international airspace and state airspace. Status –Briefing and white paper available on options provided at IWG-26 (Feb 2014) –Requires IWG discussion/guidance on narrowing options Request comments by April 30, 2014 –Can develop specific recommended requirements based on SBAS selection method White paper 2-4 months after decision on selection method

7 Federal Aviation Administration DFMC Work Plan February 5-7, 2014 Reversionary Modes Objectives –Identify minimum required avionics modes and supporting navigational services to support preferred fallback strategy and minimum operations. Status –Briefing prepared by MITRE for IWG 24 –ESA brief (IWG 26) and white paper (April/May 2014) Deliverables DescriptionDeliverablePOCDue Date Benefits Analysis of L5 only service and whether to define it as an optional mode ReportEurocontrolStill need to resolve White Paper identifying preferred set of modes for avionics and corresponding SBAS Services White PaperMITREComplete IWG 24 Standard User Algorithms specification/definition, verification and justification, for each individual algorithm. Extract of PROSBAS D2.3.1 Document EC/ESA Internal ESA/EC review April/May 2014 : Input for IWG DFMC Document

8 Federal Aviation Administration DFMC Work Plan February 5-7, 2014 Identify Benefits Objectives –Identify benefits for ANSP and avionics manufacturers Status –No definite plan to address –Any interest, commitment from new States Support for SBAS reference stations Approval of SBAS service based on dual-frequency DescriptionDeliverablePOCDue Date Draft Benefits section of Definition Document Draft SectionsTBD Documents results of feasibility analysis. Identifies key risk areas and future work. White PaperTBD

9 Federal Aviation Administration DFMC Work Plan February 5-7, 2014 Interchangeable Requirements Objectives –Identify technical issues necessary to support this capability –Derive requirements necessary to mitigate technical issues –Identify and quantify any resulting technical risks associated with this capability and the derived requirements. Status –ESA Position Computation Equations Definition of Inter System Issues (Geodetic References, Time References, Inter System Bias) April/May input for DFMC Definition Document

10 Federal Aviation Administration DFMC Work Plan February 5-7, 2014 Objectives –Explain high level safety strategy and clearly identify subsystem safety objectives (e.g. integrity and continuity performance targets) Status –No drastic change from current SBAS standards on approach to safety (e.g. not reallocation of integrity between ground and airborne subsystems) –ESA Protection Level Calculations Brief at IWG-26, April/May input for DFMC Definition Document –Threat list or modification of Safety Strategy effort not underway Propose using threat listed in ARAIM paper (see additional briefing) Safety Strategy DescriptionDeliverablePOCDue Date Safety Strategy of Definition DocumentDraft SectionsIWGTBD Threat ListWhite PaperIWGTBD User Performance Allocations - Airborne and ground subsystem integrity and continuity allocations Extract of PROSBAS D1.3.2 Document EC/ESA Internal ESA/EC review April/May 2014 : Input for IWG DFMC Document Specification, Verification and Justification of the SBAS L1/L5 Standard User performances, both for each individual performance, and for the global Performance Extract of PROSBAS D2.4.1 Document EC/ESA Internal ESA/EC review April/May 2014 : Input for IWG DFMC Document Draft Definition Document sections for airborne and ground subsystem performance requirements Draft SectionsFAATBD

11 Federal Aviation Administration DFMC Work Plan February 5-7, 2014 Avionics Design Constraints Objectives –Identify key minimum design constraints which avionics must comply with to enable DFMC concept Status –Briefed Signal Quality Monitoring and recommended correlation requirements (IWG-25, RTCA Oct 2013) –ESA working aviation error budgets DescriptionDeliverablePOCDue Date Airborne and Ground subsystem tracking requirements, RF requirements, etc. Draft SectionsFAARTCA brief Oct 2013

12 Federal Aviation Administration DFMC Work Plan February 5-7, 2014 Interface Requirement Objectives –Develop interface requirements Status –Reached consensus on ICD changes –Need to document signal format changes and accompanying requirements E.g. propose redlines to DO-229D, Appendix A which describes current signal specification DescriptionDeliverablePOCDue Date SIS RF DefinitionExtract of PROSBAS D2.1.1 Document Existing eurocae complemen ted by EC / ESA 4 versions : May 2013, Nov 2013, May 2014, Nov 2014 Interface RequirementsDraft SectionsTBD

13 Federal Aviation Administration DFMC Work Plan February 5-7, 2014 Interface Control Document Objectives –Develop the message structure for DFMC GEO L1 and L5 SIS Status –Reached consensus on ICD changes – Dec 2013 Briefed at IWG 26 Working on updated ICD –Recall previous SiS, transport layer effort DescriptionDeliverablePOCDue Date SiS Messages DefinitionExtract of PROSBAS D2.2.1 Document EC / ESABeginning 2014 Assessment of Message performances Extract of PROSBAS D2.2.2 Document EC / ESA PROSBAS ION GNSS paper Trade analysis of formatting optionsPresentationsEC/ESA PROSBAS ION GNSS paper Stanford ION GNSS paper Documentation of preferred format, including preliminary IRD and ICD information. Extracts of PROSBAS Documents EC/ESAIWG (mid 2013) Draft Interface Control Document (ICD)Draft ICDEC/ESABeginning 2014 Detailed Interface Control Document (ICD)Interface Control Document TBDUpdate release end 2014, modify through standards process

14 Federal Aviation Administration DFMC Work Plan February 5-7, 2014 Definition Document Objectives –Identify required Definition Document content and assign resources –Maintain Definition Document and populate with information when available Status –Initial outline drafted. Briefing prepared by FAA for IWG 24. –Updated expected following white paper receipt April/May 2014 Deliverables DescriptionDeliverab le POCDue Date Draft initial Definition Document outline identifying sections needed to address key DFMC concept issues. DFMC Definition Document Outline FAADec 2012 Incorporate all sections into the Definition Document. Finalize draft for IWG review and approval. DFMC Definition Document FAADec 2014

15 Federal Aviation Administration DFMC Work Plan February 5-7, 2014 Discussion Areas Benefits for Dual-Frequency SBAS Benefit of optional L5 ionosphere grid broadcast Safety strategy –Threat list / threat identification –Effort required if desire to support operations more demanding than LPV-200 Interface Requirements Document

16 Federal Aviation Administration DFMC Work Plan February 5-7, 2014 Summary Review progress of work plan Provided updates based on presentation at IWG 26 Identified work plan topics at risk Discussed path forward Please provide comments to

Presented to: IWG 26 By: Jason Burns (FAA) Date: February 5-7, 2014 Federal Aviation Administration Backup