Modernizing the National Spatial Reference System in 2022
Aug 31, 2018 1:00 PM EDT
In 2022, the National Geodetic Survey (NGS) will replace all components of the National Spatial Reference System (NSRS), including NAD 83 and NAVD 88, with a new system that is geocentric, time-dependent and not reliant upon passive control. Every survey, map or geolocation created today will be incompatible with the new system by as much as 4 meters, depending on where in the United States you are working. This misalignment could apply to every latitude and/or longitude and/or height in your work.
In order to assist users in understanding and adapting to the new system, two technical reports were released by NGS in 2017, under the title “Blueprint for 2022”, with a third, companion report in the works. The first two reports provide the scientific and definitional aspects of four new time-dependent terrestrial reference frames and their companion “geopotential datum” (replacing and expanding upon the historic concept of a “vertical datum”). The third report will focus on the user community and how it can work within this new paradigm of time-dependent geodetic control.
This talk will focus on all of the changes to expect in the future and ways that all geospatial professionals can adapt and thrive in the new system.