Overview of NGSs Modernized NSRS

This course addresses technical and policy decisions based on the NOAA Technical Report NOS NGS Blueprints for the Modernized NSRS, Part 3. The course will address the following topics: (1) the reasons for modernizing the NSRS, (2) expected coordinate changes between the existing NSRS and the new modernized NSRS, (3) the reason for time-dependent coordinates in the new NSRS, (4) the differences between NGS xGeoid models and hybrid geoids, (5) how North American-Pacific Geopotential Datum of 2022 (NAPGD2022) orthometric heights will be determined using GEOID2022, and (6) models, tools, and products being developed by NGS to help users transition to the new 2022 reference frames.