Canadian Spatial Reference System Height Reference System Modernization Mean Sea Level Conventionally, the mean sea level has been used as the reference surface for topographic…

1. Geodetic Systems (Earth, Ellipsoid) Prepared by: Md Tamim Haider 2. Overview  Geodetic Systems  Surveying  Geodesy  The Geoid  Reference Ellipsoids …

Slide 1Understanding Coordinates NJDEP & ESRI: Understanding Map Projections & Coordinate Systems Slide 2 Department Standards Spheroid GRS80 Datum NAD83 Projection…

03-04-2012 1 1 • Position is usually given as geographic coordinates, Latitude/Longitude • Datums –WGS84 – Many others usually available • Projections – UTM –…

Slide 1Map Projections and Datums Prepared By: Henry Morris Slide 2 Parameters for Mapping A mathematical model of the earth must be selected. Spheroid The mathematical model…

Slide 1 GPS and Remote Sensing Slide 2 Importance of GPS and RS GPS and remote sensing imagery are primary GIS data sources, and are very important GIS data sources. GPS…

Upcoming Changes to the National Spatial Reference System — The Upcoming Changes in National Datums — (and a few other related topics) Dave Minkel National Geodetic Survey…

Geodetic Vertical and Tidal Datums, focus on South SF Bay, CA Coastal Zone 2011 Conference “Cool Geodetic Resources For Your Project” A National Ocean Service, NOAA,…

Geodetic Vertical and Tidal Datums, focus on South SF Bay, CA Coastal Zone 2011 Conference “Cool Geodetic Resources For Your Project” A National Ocean Service, NOAA,…