Tag: Geoid

NGS Announces Release of Geodetic Data from Geoid Slope Validation Survey 2011 (GSVS11)

Between February 2011 and April 2012, the National Geodetic Survey (NGS) executed one of the most comprehensive geodetic surveys in its history: the Geoid Slope Validation Survey of 2011 (GSVS11).

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GEOID12 Error Analysis Complete and GEOID12A Model Developed

GEOID12 Error Map

Here’s an important notice from The National Geodetic Survey (NGS) concerning the new GEOID12 model: The National Geodetic Survey has determined that the GEOID12 model was developed using erroneous input control points, primarily in the Gulf Coast region. NGS immediately

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The National Geodetic Survey Improves the National Spatial Reference System with Simultaneous Major Product Releases

NGS

The National Geodetic Survey Improves the National Spatial Reference System with Simultaneous Major Product Releases In the first week of July, NOAA’s National Geodetic Survey (NGS) released the results of three major improvements to the National Spatial Reference System (NSRS).

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NGS Releases New Geoid Model to Serve Surveying, Engineering, and Scientific Communities

GEOID12 CONUS

NGS Releases New Geoid Model to Serve Surveying, Engineering, and Scientific Communities In the last week, the National Geodetic Survey has released a new height transformation model for surveyors, engineers, and the scientific community involved in water flow and the

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The U.S. Geological Survey (USGS) Releases New Heights of Accuracy for World Topography

USGS

The U.S. Geological Survey (USGS) and the National Geospatial-Intelligence Agency (NGA) have collaborated in the development of a much improved global elevation model, the Global Multi-resolution Terrain Elevation Data 2010 (GMTED2010). GMTED2010 replaces the widely used, 15-year-old GTOPO30 terrain model

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