National Ocean Service

1. National Ocean Service Real-Time GPS Positioning of Ships To Integrate Navigation ServicesDavid B. ZilkoskiNational Geodetic SurveySilver Spring, Maryland 20910-3282Dave.Zilkoski@noaa.gov NGS, NOS, NOAA

2. National Ocean Service Vision: Everyone is able to know where they are and where other things are anytime, anyplace! The mission of the National Geodetic Survey is to deliver and evolve the nation’s foundation of reference for latitude, longitude, height, velocity, shoreline, and gravity throughout the United States with consistency, accuracy, timeliness, currency, and easy access to support public safety, economic prosperity, and environmental well being. Check out our Website http:\\www.ngs.noaa.gov

3. National Ocean Service Promoting Safe Navigation • The key to safe navigation is accurate positioning. • To navigate safely mariners not only need to know where they are but at the same time they need to know where the things around them are. NGS, NOS, NOAA

4. National Ocean Service Integrated Navigation Services • NOAA proposes a navigational service that uses GPS and NSRS to provide the mariner with an integrated suite of decision making tools. • The goal of the proposal is to increase the capacity of American ports by providing them with the entire suite of pertinent NOAA data products. • These products will be provided to the mariner digitally, in real time, and will be complete, accurate, and up-to-date. NGS, NOS, NOAA

5. National Ocean Service Phases of the Demonstration Project • Demonstrate the feasibility of using GPS to determine accurate GPS heights on large marine vessels • Acquire information to describe the location and shape of the channel, shoreline, and docking areas in the GPS coordinate system • Relate the ship to the bottom of the channel, shoreline, and docking areas • Integrate real-time GPS positioning of ships with electronic charts NGS, NOS, NOAA

6. National Ocean Service 3-D Positioning of Marine Vessels using GPS GPS Antennas NGS, NOS, NOAA

7. National Ocean Service 3-D Positioning of Marine Vessels using GPS Equipment used for GPS height and altitude measurement on an ATD NGS, NOS, NOAA

8. National Ocean Service 3-D Positioning of Marine Vessels using GPS Container ship with ATD mounted on top container NGS, NOS, NOAA

9. National Ocean Service 3-D Positioning of Marine Vessels using GPS Layout of GPS equipment on container ships NGS, NOS, NOAA

10. National Ocean Service Relating Height Information to GPS • Determine heights relative to local mean sea level surface using tidal observations • Determine bathymetric heights relative to the ellipsoid using GPS • Occupy tidal stations with GPS • Occupy NAVD 88 Bench Marks with GPS NGS, NOS, NOAA

11. National Ocean Service Relating Tidal Information to GPS NGS, NOS, NOAA

12. National Ocean Service Water Level Values in the Middle of the Channel NGS, NOS, NOAA

13. National Ocean Service Bridge Vertical Clearance Using GPS NGS provided the Port of Charleston with elevations to determine vertical clearances for large marine vessels navigating beneath two bridges. The clearances were determined using a combination of geodetic data: satellite GPS data, classical leveling observations, and specially designed trigonometric leveling techniques. GPS Antennas NGS, NOS, NOAA

14. National Ocean Service Digital Docking Charts and Shoreline NGS, NOS, NOAA

15. National Ocean Service Computer Screen on the Bridge of the Ship NGS, NOS, NOAA

16. National Ocean Service NOTE: Clearance is 0.6 m NGS, NOS, NOAA

17. National Ocean Service Conclusion • NSRS provides the spatial consistency needed to relate objects to one another. • GPS provides the capability for acquiring positional data, techniques developed by NOAA provide the capability for achieving the levels of positional accuracies required. NGS, NOS, NOAA