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National Spatial Reference System
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#	Item
131	Mapping The Ionosphere Solar storms often impact the Earth’s upper atmosphere, the ionosphere. The region of free electrons and ionized atoms fluctuates with solar activity; under severe conditions, this activity has i Add to Reading List Source URL: geodesy.noaa.gov Language: English - Date: 2003-12-03 13:07:26 Surveying Measurement Navigation Avionics Global Positioning System National Spatial Reference System U.S. National Geodetic Survey Ionosphere National Oceanic and Atmospheric Administration Geodesy Technology Cartography
132	National Geodetic Survey Positioning America for the Future geodesy.noaa.gov NOAA Manages the Add to Reading List Source URL: www.geodesy.noaa.gov Language: English - Date: 2011-05-13 14:41:40 Geophysics National Spatial Reference System Datum Orthometric height Satellite navigation Latitude Vertical deflection Geographic coordinate system U.S. National Geodetic Survey Geodesy Cartography Measurement
133	The User Densification Network Add to Reading List Source URL: geodesy.noaa.gov Language: English - Date: 2002-08-23 15:50:07 National Spatial Reference System Earth U.S. National Geodetic Survey Surveying National Ocean Service National Oceanic and Atmospheric Administration Primary airport control station Geodesy Measurement Engineering
134	The Cooperative Base Network Add to Reading List Source URL: geodesy.noaa.gov Language: English - Date: 2002-08-26 16:54:46 National Ocean Service National Oceanic and Atmospheric Administration U.S. National Geodetic Survey Earth Primary airport control station Geodesy Measurement National Spatial Reference System
135	The Federal Base Network The Federal Base Network (FBN) is a nationwide network of permanently monumented stations spaced 100 kilometers apart with higher density in crustal motion areas. The FBN provides Add to Reading List Source URL: geodesy.noaa.gov Language: English - Date: 2006-08-23 11:28:42 Orthometric height National Spatial Reference System U.S. National Geodetic Survey Latitude Geographic coordinate system Geodesy Cartography Measurement
136	National Geodetic Survey Positioning America for the Future geodesy.noaa.gov NOAA Manages the Add to Reading List Source URL: geodesy.noaa.gov Language: English - Date: 2011-05-13 14:41:40 Geophysics National Spatial Reference System Datum Orthometric height Satellite navigation Latitude Vertical deflection Geographic coordinate system U.S. National Geodetic Survey Geodesy Cartography Measurement
137	The National CORS and Cooperative CORS Programs Add to Reading List Source URL: geodesy.noaa.gov Language: English - Date: 2003-04-03 16:10:56 Cartography Measurement National Spatial Reference System Navigation Satellite navigation systems Global Positioning System National Ocean Service University of Arkansas at Monticello School of Forest Resources Geodesy Technology Surveying
138	Improving the National Spatial Reference System Introduction The future of positioning is GNSS 1. The underlying reference frames for all GNSS systems are geocentric. The International Terrestrial Reference Frame (ITRF), Add to Reading List Source URL: www.ngs.noaa.gov Language: English - Date: 2010-05-12 07:23:08 Geophysics North American Vertical Datum Sea Level Datum Datum Orthometric height World Geodetic System Geodetic system Vertical deflection Physical geodesy Geodesy Cartography Measurement
139	The National Geodetic Survey Aeronautical Survey Program Add to Reading List Source URL: geodesy.noaa.gov Language: English - Date: 2003-04-03 16:10:54 Engineering National Ocean Service National Spatial Reference System U.S. National Geodetic Survey National Oceanic and Atmospheric Administration Federal Aviation Administration Surveying Airport Primary airport control station Geodesy Measurement Cartography
140	California Geodetic Control Committee Mr. Gregory A. Helmer, PLS Chairperson c/o Robert Bein, William Frost & Associates PO Box[removed]Irvine, California[removed]SPECIFICATIONS FOR GEODETIC CONTROL NETWORKS Add to Reading List Source URL: www.alaskapls.org Language: English - Date: 2008-02-10 19:25:39 Surveying Measurement GPS Navigation Global Positioning System Differential GPS Datum Geodetic system National Spatial Reference System Geodesy Technology Cartography

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