Federal Railroad Administration Leonard W. Allen III Acting Chief Track and Infrastructure Division Track and Infrastructure Division Office of Research and Development Federal Railroad Administration Presented to: Russian Plenary Session GPS - Glonass December 2005 Nationwide Differential Global Positioning System

Federal Railroad Administration December 2005 Nationwide Differential Global Positioning System (NDGPS)2 Differential GPS (DGPS) Reference Station.

Expanding the Coast Guard’s DGPS into the Nationwide DGPS Expanding the Coast Guard’s DGPS into the Nationwide DGPS Nationwide Differential Global Positioning System

Federal Railroad Administration December 2005 Nationwide Differential Global Positioning System (NDGPS)4 Current NDGPS Coverage New St. Marys WV GWEN Bobo MS New Dandridge TN GWEN Essex CA M to G Mequon WI GWEN Klamath Falls OR New Poplar Bluff MO New Big Lake TX Gooding Idaho Funded Completion New Marshall TX Approximately 92% of the lower 48 states has single coverage and 60% has dual coverage. Approximately 92% of the lower 48 states has single coverage and 60% has dual coverage.

Federal Railroad Administration December 2005 Nationwide Differential Global Positioning System (NDGPS)5 International Standard u NDGPS is designed to an international, non-proprietary standard n Compliant with RTCM SC-104 and ITU-R M.823 n Increases market for manufacturers n Enhances Global interoperability u Signal is free to all users u 50 other countries operate compatible systems u Resulting in a seamless international navigation system

Acceptance of the international standard is leading to a seamless worldwide service. Acceptance of the international standard is leading to a seamless worldwide service.

Federal Railroad Administration December 2005 Nationwide Differential Global Positioning System (NDGPS)7 Nationwide Differential Global Positioning System (NDGPS) Applications

Five Categories of NDGPS Applications 1. Original Code-Based NDGPS Applications meters Navigation, Precision Farming, Positive Train Control, Dredging, Buoy Positioning, Resource Management & GIS 2. Real-Time High Accuracy NDGPS Apps centimeters Real-time Automated Surveying of Roads, Railroads & Harbors; Highway Lane Keeping; Machinery Control; & Auto-Docking of Ships 3. Post-Processing NDGPS Applications centimeters Very Accurate Surveying, Mapping, & Hydrography 4. Stationary Scientific NDGPS Applications millimeters Plate Tectonics Monitoring & Earthquake Prediction 5. Weather Forecasting Application Water Vapor Info 1. Original Code-Based NDGPS Applications meters Navigation, Precision Farming, Positive Train Control, Dredging, Buoy Positioning, Resource Management & GIS 2. Real-Time High Accuracy NDGPS Apps centimeters Real-time Automated Surveying of Roads, Railroads & Harbors; Highway Lane Keeping; Machinery Control; & Auto-Docking of Ships 3. Post-Processing NDGPS Applications centimeters Very Accurate Surveying, Mapping, & Hydrography 4. Stationary Scientific NDGPS Applications millimeters Plate Tectonics Monitoring & Earthquake Prediction 5. Weather Forecasting Application Water Vapor Info Categories of ApplicationsProvides

Federal Railroad Administration December 2005 Nationwide Differential Global Positioning System (NDGPS)9 High Accuracy NDGPS Program Objectives u Develop a nationwide 3-D dynamic positioning service that has an accuracy of less than 15 centimeter and time to alarm integrity of less than 2 seconds u Coexist with existing NDGPS infrastructure u Do not degrade existing NDGPS u Minimize deployment costs

Federal Railroad Administration December 2005 Nationwide Differential Global Positioning System (NDGPS)10 Broadcast Site Configuration TRANSMITTER DIPLEXER REFERENCE STATION DATA FORMATTER FORMATTER MODULATOR TRANSMITTER NDGPS HIGH ACCURACY NDGPS NDGPS & HA NDGPS TO ANTENNA OBSERVABLES CORRECTIONS Rack Mount PC DSP/Analog Card

Federal Railroad Administration December 2005 Nationwide Differential Global Positioning System (NDGPS)11 High Accuracy NDGPS centimeters at 150 miles on a dynamic platform (boat).

Federal Railroad Administration December 2005 Nationwide Differential Global Positioning System (NDGPS)12 Development of High Accuracy DGPS International Standard u The United Kingdom, Germany and Japan have expressed an interest in working with the US on an international standard for High Accuracy DGPS. u Russia is a major user of DGPS. u The combination of Russia, Europe, Japan and U.S. represents about 90% of the world DGPS users. u Does Russia want to work with the UK, Japan, Germany and U.S. on development of an international standard for High Accuracy Differential GPS? u If so, I need contact information on Russia’s point of contact.

Federal Railroad Administration December 2005 Nationwide Differential Global Positioning System (NDGPS)13 Federal Railroad Administration Office of R&D, Mail Stop Vermont Ave. N.W. Washington, DC Federal Railroad Administration Office of R&D, Mail Stop Vermont Ave. N.W. Washington, DC Nationwide Differential Global Positioning System Len Allen Acting Chief Track and Infrastructure Division Office of Research & Development Len Allen Acting Chief Track and Infrastructure Division Office of Research & Development Phone: (202) Fax: (202) Web: Phone: (202) Fax: (202) Web: