Redefinition of the U.S. Vertical Datum: Replacing NAVD 88 Informational packet including GRAV-D updates 1Last Updated 12 October 2010 (DAS)
GRAV-D G ravity for the R e-definition of the A merican V ertical D atum.
Modernizing the Geopotential Datum: Replacing NAVD 88 Daniel R. Roman, Ph.D.
IN TEN YEARS……. 115+ SATELLITES 1.5 DM AUTONOMOUS POSITIONING NEW GEOMETRICAL DATUM – ITRF ALIGNED GEOCENTER BUT PROBABLY FIXED ON NORTH AMERICAN PLATE.
Status the Vertical Network in NE and Modernization of the Vertical Datum
