Why users will need to perform GNSS occupations as part of a leveling project after 2022

June 3, 2020

This column will address why users will be required to perform GNSS occupations when submitting a leveling project […]

This article is tagged with David B. Zilkoski, GNSS occupations, National Geodetic Survey, NGS and posted in Opinions, Survey

My February 2020 column provided an analysis of the differences between the latest published hybrid Geoid18 values provided […]

My last column, December 2019, highlighted the National Geodetic Survey’s (NGS) new Geoid Monitoring Service (GeMS); and, that […]

This article is tagged with David B. Zilkoski, GEOID18, NAD 83, National Geodetic Survey, NAVD 88, NGS and posted in Opinions, Survey

The National Geodetic Survey (NGS) has published a technical report that describes options for how NGS can implement […]

My last column highlighted the next phase of the National Geodetic Survey’s (NGS) GPS on Bench Marks program; […]

This column discusses the results of the National Geodetic Survey (NGS) beta hybrid Geoid18 model and the differences […]

My last column discussed the preliminary results of NGS’ second Multi-Year CORS Beta Solution of the National CORS. […]

The National Geodetic Survey (NGS) is performing another Multi-Year CORS Solution (MYCS) of the National CORS. This will […]