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Open Menu | " THE INTERAGENCY GPS EXECUTIVE BOARD (IGEB) was established by Presidential directive in 1996 to manage the Global Positioning System (GPS) and its U.S. Government augmentations as a national asset. The IGEB is a senior-level policy making body chaired jointly by the Departments of Defense and Transportation. Its membership includes the Departments of State, Commerce, Interior, Agriculture, and Justice, as well as NASA and the Joint Chiefs of Staff. A permanent Executive Secretariat located in Washington, D.C., provides day-to-day staff support to the IGEB principals. The Executive Secretariat is a point of contact for inquiries regarding GPS policy. Mr. David Turner is the Director of the IGEB Executive Secretariat..." more |
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The Astronomical Applications Department of the U.S. Naval Observatory computes, from fundamental astronomical reference data, the position, brightness, and other observable characteristics of celestial bodies, as well as the circumstances of astronomical phenomena. This information is of critical importance to navigation, military operations planning, scientific research, surveying, accident reconstruction, architecture, and everyday activities. The products of the AA Department - publications, software, algorithms, and expertise - are used by the U.S. Navy and the other armed services, civilian government agencies, the scientific research community, and the public. There products are regarded as benchmark standards throughout the world. The department also carries out a modest research program in celestial mechanics and positional astronomy to enable it to meet future needs. | |
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" This public service is provided by the Time and Frequency Division of the National Institute of Standards and Technology (NIST). It uses the national time scale UTC(NIST) as its time reference... " more |
 | " The U.S. Global Positioning System (GPS) constellation of satellites plays a major role in regional and global studies of Earth. In the face of continued growth and diversification of GPS applications, the worldwide scientific community has made an effort to promote international standards for GPS data acquisition and analysis, and to deploy and operate a common, comprehensive global tracking system..." more |
| Global PositioningSystemCarrier-Phase |
" Global Positioning System Carrier-Phase (GPS CP) measurement techniques are being developed by the U.S. Naval Observatory to increase our capability to compare time and frequency of remote clocks with the highest precision and accuracy and to provide ever more useful products to the Navy, DoD, and the Nation. The pages below will present how the method works, show some recent USNO geodetic solution-based time and frequency results, give information on the IGS/BIPM time and frequency project, and a system map and data source..." more |
 | " The U.S. Global Positioning System (GPS) constellation of satellites plays a major role in regional and global studies of Earth. In the face of continued growth and diversification of GPS applications, the worldwide scientific community has made an effort to promote international standards for GPS data acquisition and analysis, and to deploy and operate a common, comprehensive global tracking system..." more |
  | " The GPS Product Team is working to successfully field a GPS-based navigation capability in the United States to cover all phases of flight from enroute through surface navigation. The FAA is working to overcome the deficiencies in today's air traffic infrastructure and guide the future of the United States' National Airspace System (NAS). To do this, the FAA is developing two satellite-based systems, the Wide Area Augmentation System (WAAS) and the Local Area Augmentation System (LAAS), which will provide the accuracy, availability, and integrity needed to use GPS as a primary means of navigation in the U.S. National Airspace System (NAS)... |
"... The GPS Product Team is continuously working with internal FAA groups, as well as agencies and organizations outside of the FAA, to promote the benefits of satellite-based augmentation systems (SBASs) and promote the goal of a single integrated Global Navigation Satellite System (GNSS)..." more | "... These systems will provide accurate, continuous, and all-weather coverage to satisfy today's aviation needs. The SatNav Team, along with other FAA organizations and numerous governmental and non-governmental agencies, aims to pave the way for a smooth transition to satellite navigation... |
  | " The National Geodetic Survey (NGS) defines and manages the National Spatial Reference System (NSRS) - the framework for latitude, longitude, height, scale, gravity, orientation and shoreline throughout the United States. NSRS provides the foundation for transportation, communication, and defense systems, boundary and property surveys, land records systems, mapping and charting, and a multitude of scientific and engineering applications. NGS also conducts research to improve the collection, distribution, and use of spatial data..." more |
" The U.S. Department of Transportation's Civil GPS Service has designated NOAA to be the federal agency responsible for providing accurate and timely Global Positioning System (GPS) satellite ephemerides ("orbits") to the general public..." more |
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" The GPS Applications Exchange is an online information source on the diverse uses of GPS technology all over the world. GPS is a public information service used by both the public and private sectors of our global economy to improve productivity, increase safety and protect the environment. Sponsored by NASA and representatives of the GPS community the Applications Exchange includes GPS application stories that you can browse and view by application type or by country. You can also access these applications by regions using the map below. Use the pull-down menus on this page to learn about the innovative ways that GPS is being put to work..." more | |
| Other links : | Software - Waypoint.org - Atom Time - Galileo | ||
