The final stages of building the Modernized National Spatial Reference System (NSRS) have now come into focus. NGS is now in the process of compiling, organizing, and cleaning all of the relevant GNSS and leveling data contained within the NGS Integrated Database and the OPUS shared solutions database. The cleaned data will be used in a series of national scale survey adjustments using our brand new custom software package called LASER (Least-squares Adjustments: Statistics, Estimates, and Residuals), to compute the initial sets of geometric and orthometric reference epoch coordinates (RECs) on hundreds of thousands of existing survey control marks and CORSs around the country. NGS will then use those new coordinates to produce the suite of models and tools that will enable users to access and work within the Modernized NSRS. |