National Geodetic Survey Modernization Overview
The National Geodetic Survey (NGS) is modernizing the National Spatial Reference System (NSRS) to enhance accuracy, accessibility, and efficiency. This involves updating coordinates, replacing datums, simplifying services, and ensuring compatibility with time changes. The goal is to provide a reliab
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Understanding REC and SEC Coordinates in Geodesy
Geodesist Boris Kanazir and NSRS Modernization Manager Dru Smith delve into the definitions, differences, and purposes of Reference Epoch Coordinates (RECs) and Survey Epoch Coordinates (SECs) at the 2021 Geospatial Summit. OPUS coordinates, SEC computation by NGS every four weeks, REC re-computatio
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Addressing Delay in NSRS Modernization Efforts
The modernization of the NSRS faces delays beyond 2022, impacting users who rely on GPS/geoid/leveling data. Recommendations are being developed to guide users, with some decisions requiring real-time adjustments. Key issues include the lack of GPS access and internet connection for OPUS services, w
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