Nationwide differential global positioning system ndgps status
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Nationwide Differential Global Positioning System (NDGPS) Status. Presentation to : Civil GPS Service Interface Committee (CGSIC) U.S. States and Localities Subcommittee (USSLS) USCG ISC New Orleans July 8, 2008 Timothy A. Klein Senior Policy Advisor/RITA NDGPS Coordinator [email protected]

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Nationwide Differential Global Positioning System (NDGPS) Status

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Nationwide differential global positioning system ndgps status

Nationwide Differential Global Positioning System (NDGPS) Status

Presentation to:

Civil GPS Service Interface Committee (CGSIC)

U.S. States and Localities Subcommittee (USSLS)

USCG ISC New Orleans

July 8, 2008

Timothy A. Klein

Senior Policy Advisor/RITA NDGPS Coordinator

[email protected]


Brief program history

Brief Program History

  • Inland NDGPS Augmentation Developed as Extension of Maritime DGPS

    • Provides real-time differential correction; proven sub-meter accuracy; 99%+ availability

    • Provides single coverage on the ground over 92% of CONUS and double coverage over 65% of CONUS

    • Authorized in 1988 (P.L. 105-66); operated by U.S. Coast Guard under multiagency MOA

    • DOT funded from multiple agencies under FRA program management ($53M, FY98-06)


Brief program history 2

Brief Program History (2)

  • The NDGPS Assessment

    • FY07: “zeroed out” of FRA budget

    • October 2006: PNT EXCOM action – “DOT complete assessment of the need for inland component of NDGPS”

    • FY07/08: RITA assessment in support of EXCOM action

      • Federal Register Notice

      • Independent Assessment (ARINC)

      • Letter to Agencies

    • Recommendations accepted by ESG; 01/23/08

    • Endorsed by EXCOM; 03/20/08


National space based pnt execcom action

National Space-Based PNT ExecCom Action

  • Action: DOT complete assessment of the need for inland component of NDGPS

    • Final resolution to be determined by:

      • interagency requirements

      • level of support

    • If there were no transportation requirements or other Federal user requirements, DOT intended to develop decommissioning plan for NDGPS

    • DOT cost share with other agencies possible if there is a transportation requirement


Assessment affirms requirements

Assessment Affirms Requirements

  • Assessment affirms operational requirements for inland NDGPS

    • Transportation operational requirements:

      • Federal Highway Administration (FHWA)

        • on behalf of state and local DOT stakeholders

        • routine use in Federal-Aid Program

        • survey, construction, quality, asset management

      • Federal Railroad Administration (FRA)

        • safety system requirements (positive train control, track defect location)

      • Association of American Railroads

        • baseline reference for positive train control

      • National Governor’s Association

        • use by state DOTs, resource management


Assessment affirms requirements 2

Assessment Affirms Requirements (2)

  • Assessment affirms operational requirements for inland NDGPS

    • Other Federal operational requirements:

      • Department of Agriculture (NCRS, Forest Service)

        • High-accuracy positioning/repeatability

        • Fire services and enforcement

      • Department of Commerce (NOAA – NWS, NGS)

        • Continuously Operating Reference Stations

        • Weather forecasting

      • Department of the Interior (BLM, NPS, USGS)

        • High-accuracy positioning

        • Fire services and enforcement

      • Numerous natural resource stakeholders


Assessment affirms requirements 3

Assessment Affirms Requirements (3)

  • Assessment affirms operational requirements for inland NDGPS

    • State/local and private sector operational requirements:

      • Civil GPS Services Interface Committee (CGSIC) U.S. States and Localities Subcommittee

        • State Departments of Transportation, Natural Resources, Environmental Protection, Agriculture, Parks

        • Multiple states and counties also responded

      • Private/Non-Profit Requirements

        • U.S. GPS Industry Council

        • National Precision Farming Association

        • Professional Land Surveyors


Assessment affirms requirements 4

Assessment Affirms Requirements (4)

  • Assessment results affirm research needs for inland NDGPS

    • Transportation research requirements:

      • Federal Highway Administration (FHWA)

      • Federal Railroad Administration (FRA)

      • Association of American Railroads

      • Alliance of Automobile Manufacturers

      • Advocates for Highway and Auto Safety

  • Assessment affirms no other existing PNT augmentation meets accuracy requirements for multiple terrestrial applications


Recommendations accepted by esg

Recommendations Accepted by ESG

  • Ratify inland NDGPS as a national utility

    • Reaffirm DOT sponsorship

    • Determine funding required to deploy IOC/FOC

  • DOT to lead interagency team to develop new program and business plan

    • Jointly develop a fund-sharing mechanism among Federal Agencies with requirements

    • Inclusion in Department/Agency FY10 budgets required

      • System at risk due to deferred equipment refresh

      • Free of user fees, per U.S Space-Based PNT Policy


Nationwide differential global positioning system ndgps status

NDGPS Funding, FY 08-09

  • DOT/RITA FY08 Funding = $4.6M

    • RITA agreed to be interim program sponsor

    • Existing system operations and Maintenance

      (O&M) only

    • No construction/expansion/upgrade for NDGPS sites in FY 07/08

    • Pass-through to U.S. Coast Guard for O&M

  • DOT/RITA FY09 Funding = $4.6M

    • Pass-through to U.S. Coast Guard for O&M

    • Insufficient to meet O&M requirements


Nationwide differential global positioning system ndgps status

Projected NDGPS Funding Needs:FY09 + Recapitalization[USCG+DOT Estimates]

  • FY09 Shortfall

    • $4.6M as placeholder; insufficient for O&M

    • Shortfall ~ $0.8M

  • Recapitalization (required in FY09 for any operational scenario)

    • $3.5M

      • Equipment refresh required for ongoing operations (deferred maintenance)

      • Three years behind Maritime DGPS

      • Future estimates based on completing recapitalization (proven reduced O&M costs)

  • Total Additional Need: $4.3M


Nationwide differential global positioning system ndgps status

Projected NDGPS Funding Needs: FY10 and Outyears[USCG+DOT Estimates]

  • Current System; no build-out

    • $5.9M average annual operations and maintenance (O&M) only

  • Complete Initial Operating Capability (IOC) – 8 sites

    • $3.4M capital costs

    • $6.2M annual (O&M)

  • Complete Full Operating Capability (FOC) – 20 sites

    • $19.0M capital costs

    • $6.5M annual O&M


Nationwide differential global positioning system ndgps status

Thank You! Questions?


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