1. © 2013 The MITRE Corporation. All rights reserved. SBAS IWG #25 Meeting St Petersburg, Russia 25-26 June 2013 Roland Lejeune Navigation System Panel (NSP) Summary of Recent Meetings

2. | 2 || 2 | Introduction (1 of 2)  One NSP meeting took place since IWG/24: –March 19-28, 2013  Agenda items of direct interest to IWG: –ICAO Secretariat announcements –Review of the work program in light of the outcome of the 12 th Air Navigation Conference –Core constellations and SBAS standards  Other agenda items (not covered in this briefing): –GBAS standards –Conventional Navigation Aid standards –Spectrum issues –Implementation issues © 2013 The MITRE Corporation. All rights reserved.

3. | 3 || 3 | ICAO Secretariat announcements  Amendment 88 to Annex 10 was adopted by the Council in February 2013 –It contains no changes originating from NSP, but Volume I contains some changes from the Approach Classification Task Force –It will become applicable in November 2013  Amendment 89 has passed final review by the Commission and should be adopted by the Council in early 2014 –It contains changes approved by NSP in 2011 and 2012 –It will become applicable in November 2014  Amendment 90 is in the planning stage –It will contain changes approved by NSP in 2013 –It will be applicable in November 2015  2 nd Edition of GNSS Manual (Doc 9849) has been published © 2013 The MITRE Corporation. All rights reserved.

4. | 4 || 4 | Review of the work program in light of the outcome of the 12 th Air Navigation Conference  The 12 th Air Navigation Conference (ANConf/12) generated 6 recommendations directly related to the work of NSP –ANConf/12 was held on 19-30 November 2012 in Montreal –Navigation was a small part of the agenda  NSP generated 6 “Job Cards” describing the work it proposes to do in response to the 6 recommendations –Job Cards are new forms developed by the Commission to make decisions on, and track the progress of, panel work items  The 6 Job Cards address the following areas of work a.GNSS radio frequency interference b.GNSS evolution and multi-constellation c.Mitigation of space weather effects d.Alternative position navigation and timing (APNT) e.Navigation aid rationalization f.Maintenance of the ICAO Navigation Roadmap © 2013 The MITRE Corporation. All rights reserved.

5. | 5 || 5 | Core constellation standards  GLONASS –An analysis of the GLONASS L3 CDMA link budget assuming a user antenna with gain profile in the SARPs yielded a negative margin. Standardization of dual-frequency antennas will require further work. –GLONASS will transition to an updated coordinate system (PZ-90) by 1 January 2014. Conversion to WGS-84 will be provided. –GLONASS has 24 satellites and 5 ready to be launched, and measured performance shows improvements  BeiDou –Interface Control Document (ICD) version 1.0 for the BeiDou B1I signal has been published. –The constellation has 14 active BeiDou navigation satellites (5 GEOs, 5 MEOs and 4 IGSOs) and is providing service in Asia-Pacific region. –Initial draft SARPs material for BeiDou Open Service (OS) B1I.  Material will need to be revised to fit within concise format intended to be used for standardization of future constellations and signals © 2013 The MITRE Corporation. All rights reserved.

6. | 6 || 6 | SBAS standards  Proposed changes to SBAS SARPs for consistency with SBAS user receiver MOPS, DO229D –17 minor changes informally approved –8 more significant changes to be revisited at next meeting –Change package to be formally approved at next meeting  Proposed change to remove APV-II and rename APV-I simply APV –Proposal originated from Instrument Flight Procedure Panel (IFPP) desire to remove confusion and simplify the development of obstacle clearance criteria –Change not agreed as proposed, but agreement to revisit the issue at the next meeting (and, if possible, address perceived confusion between operation and performance level in Table 3.7.2.4-1)  Proposed method for computing continuity from recorded data –Agreement to include a description of the method in a future update of the GNSS manual © 2013 The MITRE Corporation. All rights reserved.

7. | 7 || 7 | Multi-constellation GNSS  Observations regarding the development of multi-constellation systems –4 constellations will potentially be able to support PBN applications in the 2020+ timeframe: GPS, GLONASS, Galileo, BeiDou –Vision from ANConf/11 (2003) in which States neither mandate, nor prohibit, the use of any specific constellation(s) may not be fully realized in the future –Future standardization efforts will need to address these issues with practical, cost-effective solutions –Gaining confidence in performance of new constellations will require time, data analysis, and commitments from service providers  Presentation of IWG Work Plan to facilitate the standardization of DFMC systems –GNSS SARPs subgroup to review and provide comments © 2013 The MITRE Corporation. All rights reserved.

8. | 8 || 8 | Other Issues  ICAO and ITU signed a memorandum of cooperation on dealing with interference issues –Focus on interference issues with implications to global aviation that cannot be resolved at the State level –NSP developed material on reporting incidents, which may be included in a State Letter or in a future update of the GNSS manual  Approach reclassification –ICAO established a Task Force to develop proposals to address the confusing approach terminology –Task Force settled on an approach that limits changes to existing documentation  Developed a mapping between different terminologies used in different annexes  Operations will be classified on basis of achieved minima (Types A and B)  Documentation impact limited to Annex 6 to define the new classification © 2013 The MITRE Corporation. All rights reserved.

9. | 9 || 9 | Acronyms  APNTAlternative Position Navigation and Timing  APVApproach with Vertical Guidance  GBASGround-Based Augmentation System  CDMACode Division Multiple Access  DFMCDual-Frequency, Multi-Constellation  GNSSGlobal Navigation Satellite System  IWGInteroperability Working Group  ITUInternational Telecommunication Union  LPVLocalizer Performance with Vertical Guidance  MOPSMinimum Operational Performance Standard  NSPNavigation Systems Panel  PBNPerformance-Based Navigation  SARPsStandards and Recommended Practices  SBASSatellite-Based Augmentation System © 2013 The MITRE Corporation. All rights reserved.