The Office of the Assistant Secretary for Research and Technology (OST-R), serving as the Departmental lead on Positioning, Navigation and Timing (PNT) matters, performs the following duties, as outlined in an August 1, 2007 Memorandum from the Secretary of Transportation:
- Coordinates the development of Departmental positions on PNT and spectrum policy and the protection of PNT systems from harmful radio frequency interference and operational degradation in conjunction with the Under Secretary for Policy and the Assistant Secretary for Transportation Policy.
- Represents the civil Departments and Agencies in the development, acquisition, management, and operations of the Global Positioning System.
- Coordinates, in conjunction with OST Budget and Policy, civil PNT funding across the Department and among the civil Departments and Agencies.
- Supports the Deputy Secretary on National PNT Executive Committee matters and represents DOT, along with the other modal representatives, at PNT Executive Committee meetings.
- Provides civil PNT systems analysis and coordination, including requirements development and architectural development.
- Oversees and manages the work of the DOT civil liaisons at the GPS Wing and Air Force Space Command.
- Represents DOT in Federal radionavigation planning and requirements development activities.
- Chairs the DOT Positioning and Navigation Working Group and acts as executive secretariat for the Under Secretary who chairs the DOT Executive Committee.
- Chairs the Nationwide Differential Global Positioning System Executive Steering Council.
- Chairs the Civil Global Positioning System Service Interface Committee.
- Coordinates, in conjunction with the Assistant Secretary for Transportation Policy and the Assistant Secretary for Budget and Programs, all PNT budget activities within each operating administration.
- Provides regular PNT updates to the Under Secretary for Policy and the Assistant Secretary for Transportation Policy.