Tag Archives: NATRF2022

xyht 2022

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...

A frequently used Coast & Geodetic Survey (predecessor to the NGS) marker set in 1933, across the bay from Seattle.

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...


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...