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TAG: David B. Zilkoski

Experimental Geoid Models 2020 (xGEOID20). (Image: NGS)

NGS releases annual experimental geoid models and gravity interpolation tools

February 3, 2021

Source: Esri ArcGIS GNSS Leveling Web Application

ArcGIS web app incorporates datasets, NGS data layers for surveyors

December 2, 2020

Image: National Geodetic Survey

NGS releases beta tool for obtaining geodetic information

October 7, 2020

Auto Mining: A driverless Cat 793F CMD truck leaves an iron ore pit. (Photo: Caterpillar)

The expanded role of positioning through advancements in GNSS

September 14, 2020

Figure 2 – Approximate Change Between NAPGD2022 and NGVD 29 Using GPS on BMs Data (units = cm). (Image: National Geodetic Survey)

NGS releases modernized National Spatial Reference System updates

August 5, 2020

David B. Zilkoski

Number of trained US geodesists at crisis level

July 20, 2020

Image: National Geodetic Survey

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

June 3, 2020

This article is tagged with , , , and posted in Opinions, Survey
Image: National Geodetic Survey

The differences between published Geoid18 and Geoid12B values in Southern Louisiana

April 1, 2020