Tag Archives: Dru Smith
2022: Monumental Changes, Part 1
The National Geodetic Survey of the U.S. responds to surveyors’ questions on how legacy physical geodetic monuments will be affected by the planned 2022 reference framework modernization. Editor’s note: A recent article in xyHt’s online newsletter, Field Notes, prompted a discussion among surveyors on the pending 2022 modernization of the National Spatial Reference System (NSRS) for...
2022 and You
The year 2022 …. “And then one day you find ten years have got behind you. No one told you when to run; you missed the starting gun.” —Time, by Pink Floyd (Gilmour, Wright) The year of the planned update of the U.S. national spatial reference system, 2022, looms large on the horizon and is...
Passive Survey Marks Get a “Stay” under the NSRS
My first order of business is to thank Dr. Dru Smith and the National Geodetic Survey (NGS) for their response to my “Are HARNs on Death Row?” article. When I wrote the piece, my objective was to increase awareness and incite action among the surveying community regarding the perpetuation of historical passive survey marks under...
The Modernized NSRS (A Summary)
Editor’s Note (from Scott Martin): When I learned that NGS and Dru Smith (the NSRS modernization manager for the NGS) had requested to respond to my August Field Notes, I was quite intimidated. However, my fears were quickly quelled. Thank you, Dr. Smith! As mentioned below, a more extensive and informative response on the monumental...
Are HARNs on Death Row?
In the late 1980s, the National Geodetic Survey (NGS) launched a program, in cooperation with State partners, to establish a High Accuracy Reference Network (HARN) across the United States. HARN’s History With the rapidly increasing availability and use of GPS equipment, NGS recognized the need to establish a network of high-accuracy, passive survey monuments with...
