National Spatial Reference System

The National Spatial Reference System (NSRS), managed by the National Geodetic Survey (NGS), is a coordinate system that includes latitude, longitude, elevation, and other values. The NSRS consists of a National Shoreline, the National CORS (a system of Global Positioning System Continuously Operating Reference Stations), a network of permanently marked points, and a set of models that describe dynamic geophysical processes affecting spatial measurements.[1]

In 2022, the NSRS will be modernized and use the following four frames of reference:[2]

  • North American Terrestrial Reference Frame of 2022 (NATRF2022)
  • Pacific Terrestrial Reference Frame of 2022 (PTRF2022)
  • Caribbean Terrestrial Reference Frame of 2022 (CTRF2022)
  • Mariana Terrestrial Reference Frame of 2022 (MTRF2022)


  1. ^ "The National Spatial Reference System". National Geodetic Survey. Retrieved April 3, 2013.
  2. ^ Smith, Dru; Roman, Dan; Hilla, Steve. "NOAA Technical Report NOS NGS 62: Blueprint for 2022, Part 1: Geometric Coordinates" (PDF). National Geodetic Survey. Retrieved July 11, 2018.

External linksEdit