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

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

Nationwide Differential Global Positioning System (NDGPS) Five Categories of ApplicationsProvides 1. Original Code-Based NDGPS Applications 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 Applications 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 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 Applications 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

CGSIC March, Coverage (September 2002) Coverage March 2003

CGSIC March, Current Coverage (September 2003) Coverage March 2004

CGSIC March, Projected Coverage Funded Projected Coverage (December 2003)

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

CGSIC March, 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.

CGSIC March, 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

CGSIC March, FY $2.4M (in Coast Guard appropriation) FY $7.2M requested by FRA $5.5M (in Coast Guard appropriation) FY $10.4M requested by FRA $5.0M (in FHWA appropriation) FY $18.7M requested by FRA $6.0M (in FAA appropriation) NDGPS Funding History

CGSIC March, FY $20.5M requested by FRA $6.0M (in FHWA appropriation) FY $32.1 Requested by FRA $6.0M (in FAA appropriation) FY $27.0M requested by FRA $5.8M (in FRA appropriation) NDGPS Funding History (con’t)

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

CGSIC March, 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:

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

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