About David B. Zilkoski
David B. Zilkoski has worked in the fields of geodesy and surveying for more than 40 years. He was employed by National Geodetic Survey (NGS) from 1974 to 2009. He served as NGS director from October 2005 to January 2009. During his career with NGS, he conducted applied GPS research to evaluate and develop guidelines for using new technology to generate geospatial products. Based on instrument testing, he developed and verified new specifications and procedures to estimate classically derived, as well as GPS-derived, orthometric heights.
Now retired from government service, as a consultant he provides technical guidance on GNSS surveys; computes crustal movement rates using GPS and leveling data; and leads training sessions on guidelines for estimating GPS-derived heights, procedures for performing leveling network adjustments, the use of ArcGIS for analyses of adjustment data and results, and the proper procedures to follow when estimating crustal movement rates using geodetic leveling data. Contact him at dzilkoski@gpsworld.com.
Posts by David B. Zilkoski
Dave Zilkoski highlights the emerging capabilities, applications and sectors subcommittee’s discussion about GPS HARS at the last PNT Advisory Board meeting of 2024. Read more»
The modernization of the NSRS is scheduled for 2025. NGS intends to release associated tools and services within five years of the modernization. Read more»
David Zilkoski provides updates about the vertical datums that the National Oceanic and Atmospheric Administration (NOAA) is working on. Read more»
The Ohio State University and Michigan State University are making significant strides in creating tools for the development and implementation of the updated National Spatial Reference System (NSRS) set for 2025. Read more»
The GeoGov 2024 Summit hosted a panel discussion between NGS and other federal and industry leaders on the modernized National Spatial Reference System (NSRS). Read more»
The UN-GGIM: Europe webinar series "Quo Vadis Geodesy?" focused on the importance of geodesy and the need for more trained geodesists. Dave Zilkoski highlights interesting items from the webinar, including the need for more trained geodesists in Europe. Read more»
This column highlights activities associated with the Transportation Research Board’s ADK70 Standing Committee on Geospatial Data Acquisition Technologies. Its most recent committee was held on July 29-31, 2024, in Washington, D.C. Read more»
Dave Zilkoski highlights the products on NGS’s Alpha Preliminary Products site. The site is for users to obtain a better understanding of the products that will be distributed as part of the new, modernized National Spatial Reference System (NSRS). Read more»
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