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NOAA Datums Videos 2014

Differential correction with NA2011 and the newest epoch of NAD83

See our and Datums Basics and GPS Tutorials for the long-awaited results of months of rigorous testing and peer review

Trimble Positions software has replaced Trimble GPS Analyst in ArcGIS 10.1

ALASKA GPS and GIS users - check out Joel Cusick's Datum and Projections presentation Feb 2013

ArcGIS 10.1 - New and Cool improvements see Presentation from Melita Kennedy, ESRI : Projections and Datums Dec 2012

Home Datums Office Guides LATEST Geoid12A and transformation files for GPS Pathfinder Office (2012)
LATEST Geoid12A and transformation files for GPS Pathfinder Office (2012) PDF Print E-mail

 The new GEO12A geoid can also be added via Trimble Geiod12 .GGF files.

Geoid files here.