National Spatial Reference System Access in 2022

Daniel Roman

Peer Reviewed

Abstract:	In 2022, the National Geodetic Survey will implement a new datum to replace both the North American Datum of 1983 (NAD 83) and the North American Vertical Datum of 1988 (NAVD 88). This datum will provide the primary access to the National Spatial Reference System (NSRS) through GNSS and a geopotential model. Foundation CORS sites will provide a backbone network to ensure that the U.S. contributions to the ITRF solutions remain robust. In turn, these sites will also provide the connection to the densified network of CORS stations to provide local access. RTN and RTK surveys will provide an additional layer of access for improved local resolution. Velocities will be taken into account to provide tie back to survey points. Passive control (e.g., bench marks) will become secondary access to the NSRS with conversion models being provided to ensure backward compatibility to NAD 83 and NAVD 88.
Published in:	Proceedings of the 2017 International Technical Meeting of The Institute of Navigation January 30 - 2, 2017 Hyatt Regency Monterey Monterey, California
Pages:	15 - 19
Cite this article:	Roman, Daniel, "National Spatial Reference System Access in 2022," Proceedings of the 2017 International Technical Meeting of The Institute of Navigation, Monterey, California, January 2017, pp. 15-19. https://doi.org/10.33012/2017.14871
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