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RADIONAVIGATION CAPABILITIES ASSESSMENT TASK FORCE

RADIONAVIGATION CAPABILITIES ASSESSMENT TASK FORCE. CGSIC March 10, 2004 s s s s s s s s s s s s s s s s John Augustine U.S. Department of Transportation. Background Task Force Purpose Technical Approach Conclusions Recommendations Way Ahead. Overview. Background.

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RADIONAVIGATION CAPABILITIES ASSESSMENT TASK FORCE

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  1. RADIONAVIGATION CAPABILITIES ASSESSMENT TASK FORCE CGSIC March 10, 2004 s s s s s s s s s s s s s s s s John Augustine U.S. Department of Transportation

  2. Background Task Force Purpose Technical Approach Conclusions Recommendations Way Ahead Overview

  3. Background • The Vulnerability Assessment of the Transportation Infrastructure Relying on the Global Positioning System • Released September 10, 2001 • Identified vulnerabilities to aviation, maritime, and land applications and recommended an assessment • On March 6, 2002, Secretary Mineta initiated an action plan • Directed the DOT Pos/Nav EC to establish a Task Force and conduct an assessment of radionavigation system capabilities for the transportation infrastructure

  4. Background – cont. • Membership within the Task Force consisted of technical experts from: OST, FAA, FHWA, FRA, ITSJPO, NGS, NHTSA, USCG, and Volpe • SETA support from Overlook Systems Technologies • OST assigned as Task Force chair • Extensive Working Group meetings held from from March 2002 – December 2003 • First comprehensive cross-modal radionavigation system assessment for transportation infrastructure

  5. Task Force Purpose • Conduct a multi-modal capabilities assessment of all radionavigation systems to satisfy national PNT requirements. • Provide a recommendation on a capability investment strategy for the mix of Federal radionavigation systems • To meet all requirements of the U.S. Transportation infrastructure • Ten year forecast

  6. Technical Approach (Task 1) • Conducted analyses of requirements versus system capabilities for transportation and non-transportation requirements • Requirements used were based on the 2001 FRS and 2000 GPS ORD. Several new requirements not yet captured in FRS or ORD were also considered. • System capabilities were based on the 2001 FRS, 2000 GPS ORD, and GPS SPS Performance Standard • Assessment yielded 19 detailed application analyses • Focused on cross modal systems and did not address aviation-specific systems (i.e. VOR/DME, ILS, TACAN, and NDB)

  7. Technical Approach (Task 2) • Radionavigation system mix recommendation (Task 2) evaluated: • Radionavigation system capabilities • Back-ups to GPS • System costs • Task Force defined 11 basic system mix options including 2001 FRP baseline • System mix options considered: • Terminating certain systems • Collocating certain systems where feasible and cost beneficial • Identifying system enhancements that would be necessary to meet certain cross-modal requirements

  8. Technical Approach (Task 2 cont.) • With guidance from the Pos/Nav EC and completion of the capabilities assessment, the Task Force reduced the 11 system mix options to a final set of four system mix options: • Option 1: Baseline 2001 FRP • Option 2: Discontinue Loran-C • Option 3: Collocate Augmentations and Continue Loran-C • Option 4: Collocate Augmentations and Discontinue Loran-C • Final four system mix options addressed current primary and backup requirements for aviation, marine, land, and non-transportation users

  9. Task Force Conclusions • Additional studies needed before “final” system mix can be recommended • Adequate back-ups exist today for current transportation and positioning requirements • However, evolutions in systems, applications, and requirements will necessitate continual cross-modal coordination and validation within each mode to assure adequate back-ups remain • Back ups for timing applications remain less clear • Back ups do not have to be other radionavigation systems

  10. Task Force Conclusions – cont. • No one system meets all cross-modal requirements • Validates 1994 National Augmentation Study • Further collocation of existing radionavigation systems is not cost effective at this time • Due to limited number of new WAAS sites that are available for collocation with NDGPS • Efforts should focus on future system expansions • R&D systems were not considered in the final evaluation • Considered in future evaluations as these systems mature and become operational

  11. Task Force Recommendations • DOT should review radionavigation system investment decisions and program strategies • Ensure PNT requirements are met in the most cost effective manner across the entire transportation infrastructure • Current IRB structure should be broadened to serve this oversight review function • GPS modernization, including the implementation of the second and third civil frequencies, should proceed as expeditiously as feasible • Every effort should be made to meet, and accelerate if possible, the operational implementation schedule for these new GPS capabilities

  12. Task Force Recommendations – cont. • Complete the enhanced Loran evaluation • If enhanced Loran meets the aviation and maritime requirements, and is cost effective across multiple modes, Loran should be retained • If enhanced Loran does not meet expected performance criteria, or is not cost effective across multiple modes, Loran should be terminated at the end of 2008 • Complete three additional studies as follows: • USCG, in cooperation with the FAA, assess the ability of WAAS to meet maritime requirements • FHWA, in cooperation with FRA and USCG, assess the ability of HA-NDGPS to meet surface requirements • The FAA will assess the ability of LAAS to meet precision approach requirements for aviation

  13. Task Force Recommendations – cont. • Collocation of WAAS, NDGPS, and Loran facilities should be explored in conjunction with any future expansions of those systems (contingent upon results of enhanced Loran study). • Department should explore funding strategies to ensure NDGPS is implemented in accordance with the schedule in the 2001 FRP. • As requirements and applications continue to evolve, the potential for various systems to contribute to the overall radionavigation mix should be periodically reevaluated.

  14. Way Ahead • Complete enhanced Loran evaluation by March 31, 2004 • Enable Loran decision by end of 2004 • Complete three additional system evaluations to assess the ability of: • WAAS to meet maritime requirements • HA-NDGPS to meet current and future land requirements • LAAS to meet precision approach requirements for aviation • Reassess final four system mix options as additional data become available

  15. Document Access • Electronic copies of the Radionavigation Capabilities Assessment Task Force report can be obtained from: • http://www.navcen.uscg.gov/ • http://ostpxweb.dot.gov/ • Limited hard copies available

  16. Questions John E. Augustine Office of Navigation and Spectrum Policy Department of Transportation Tel: (202) 366-4355 Fax: (202) 366-3393 John.Augustine@ost.dot.gov

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