All posts by Dr. Yan Ming, Daniel Martin, and Dr. Gerry Mader

NGS personnel check all GNSS instrumentation at the NGS instrumentation and methodologies facility in Corbin, Virginia.

NGS Finds a Real-Time Solution

An Iowa RTN contributes to the National Geodetic Survey’s Geoid Slope Validation Survey of 2014.  The gravimetric geoid model will become the zero-height surface for the new geopotential reference frame, which will replace the North American Vertical Datum (NAVD 88) in 2022.  The Geoid Slope Validation Survey of 2014 (GSVS14) is the second survey conducted...