1. Nationwide DGPS Project Status Presentation to CGSIC 43 nd Meeting March 10, 2003   CAPT Curtis Dubay U.S. Coast Guard

2. CGSIC March, 20042 OVERVIEW Project Progress Funding Status Potential System Improvements Issues

3. Nationwide Differential Global Positioning System (NDGPS) Five Categories of ApplicationsProvides 1. Original Code-Based NDGPS Applications 1 - 3 meters Navigation, Precision Farming, Resource Management, Dredging, Buoy Positioning, Positive Train Control, Emergency Response & GIS 2. Post-Processing NDGPS Applications2 - 5 centimeters Surveying, Mapping, Charting & Hydrography 3. Stationary Scientific NDGPS Applications2 - 3 millimeters Plate Tectonics Monitoring & Earthquake Prediction 4. High Accuracy NDGPS Applications10 - 15 centimeters Real-time Automated Surveying of Roadways, Railways & Harbors; Highway Lane Keeping; Machinery Control 5. Weather Forecasting ApplicationContinuous measurement of water vapor in the atmosphere Five Categories of ApplicationsProvides 1. Original Code-Based NDGPS Applications 1 - 3 meters Navigation, Precision Farming, Resource Management, Dredging, Buoy Positioning, Positive Train Control, Emergency Response & GIS 2. Post-Processing NDGPS Applications2 - 5 centimeters Surveying, Mapping, Charting & Hydrography 3. Stationary Scientific NDGPS Applications2 - 3 millimeters Plate Tectonics Monitoring & Earthquake Prediction 4. High Accuracy NDGPS Applications10 - 15 centimeters Real-time Automated Surveying of Roadways, Railways & Harbors; Highway Lane Keeping; Machinery Control 5. Weather Forecasting ApplicationContinuous measurement of water vapor in the atmosphere

4. CGSIC March, 20044 Coverage (September 2002) Coverage March 2003

5. CGSIC March, 20045 Current Coverage (September 2003) Coverage March 2004

6. CGSIC March, 20046 Projected Coverage Funded Projected Coverage (December 2003)

7. CGSIC March, 20047 Current Status NDGPS Expansion is progressing. Currently 81 sites are operational. Continue to fill coverage gaps.

8. CGSIC March, 20048 Current Status (cont’d) Single-station coverage now at 87% of the CONUS. Dual-station coverage currently 55%. Eight sites under development. Single coverage, nation-wide, should be achieved by the end of 2005 with the addition of 9 more sites.

9. CGSIC March, 20049 Complete Dual Coverage Requirement $25M to complete CONUS dual coverage & Alaska rail corridor coverage. - Total of 28 more sites in CONUS & AK $22.5M to complete single coverage of Alaska - Total of 15 more sites in AK $8M for annual operations & maintenance Current annual O&M costs are around $3.3M

10. CGSIC March, 200410 FY1998 -- $2.4M (in Coast Guard appropriation) FY1999 -- $7.2M requested by FRA $5.5M (in Coast Guard appropriation) FY2000 -- $10.4M requested by FRA $5.0M (in FHWA appropriation) FY2001 -- $18.7M requested by FRA $6.0M (in FAA appropriation) NDGPS Funding History

11. CGSIC March, 200411 FY2002 --$20.5M requested by FRA $6.0M (in FHWA appropriation) FY2003 --$32.1 Requested by FRA $6.0M (in FAA appropriation) FY2004 --$27.0M requested by FRA $5.8M (in FRA appropriation) NDGPS Funding History (con’t)

12. CGSIC March, 200412 Potential System Improvements Improve performance... address the needs of governments and public Higher accuracy, at the 10-20 cm level Utilize additional available bandwidth for safety or public service applications

13. CGSIC March, 200413 High Accuracy NDGPS Enable 3-D Dynamic Positioning at the Centimeter Level throughout the NDGPS Network Coexist with the current NDGPS Broadcast Minimize the incremental cost of adding High Accuracy NDGPS to NDGPS Sites Utilize existing broadcast antenna, reference stations, and site infrastructure Incremental Cost ~$90K/ Site The Phase I HANDGPS Report is available at: www.tfhrc.gov/its/ndgps/02110/index.htm

14. CGSIC March, 200414 NDGPS Issues Convening the NDGPS Executive Steering Council (NESC) Maintaining a stable source of funding New sites will require addition design and construction effort

15. Nationwide DGPS Project Status Presentation to CGSIC 43 nd Meeting March 10, 2003   CAPT Curtis Dubay U.S. Coast Guard