Abstract

NGA Replacements for Web Mercator
Track: Defense
Authors: Mike Paniccia, Craig Rollins

NGA announced that web-Mercator is unacceptable for use in NSG products. The NGA approved replacements are Tiled Mercator, Tiled Transverse Mercator, and Tiled Polar Stereographic. These are all designed specifically for mobile and handheld devices, with a raster-graphics tile-pyramid to match. They are conformal, and so can be used for navigation and targeting. Discussion will cover problems with web-Mercator, the benefits of the replacements, and how to work with the new projections in ArcGIS.