Nightmare on GIS Street: GNSS Accuracy, Datums and Geospatial Data

GPS World
[ Link to YouTube ]

Overview – Sponsored by: Hemisphere GNSS
Broadcast Date: Thursday, June 20, 2013
Moderator: Eric Gakstatter, Survey Scene Newsletter Editor
Speakers: Kevin Kelly, Geodesist, ESRI, Inc.; Craig Greenwald, Technical Director, GeoMobile Innovations; Michael L. Dennis, RLS, PE, Geodesist, NOAA
Summary: A look at the challenge of dealing with horizontal datums in your GIS. We are moving into a new era in dealing with datum transformations. Geodata 2.0 is coming, and it can create big headaches when attempting to combine disparate geospatial databases. Sensors such as GPS receivers, remote sensing imagery, and 3D scanning provide much more accurate data, setting up a collision with outdated and mismatched legacy horizontal datums.