Durk van Willigen 1 reelektronika The Challenge of Finding Your Position in a World Hostile to Radio Navigation Prof.dr. Durk van Willigen Reelektronika,
GRAV-D G ravity for the R e-definition of the A merican V ertical D atum.
GRAV-D G ravity for the R e-definition of the A merican V ertical D atum
Upcoming replacements for NAD83, NAVD88 and IGLD85 Dru Smith, NGS Richard Snay , NGS
The GRAV-D Project and The Future of NAD 83 and NAVD 88 A briefing for FEMA leadership Dru Smith, Chief Geodesist NOAA’s National Geodetic Survey.
Outline