Figure 8: Legend on GPS on Bench Marks Web Map Application Site (Photo: National Geodetic Survey)

Using the new interactive ‘GPS on Bench Marks’ map

August 7, 2019

The National Geodetic Survey (NGS) is now developing the 2022 transformation model. Once again, NGS requests the assistance […]

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This article is tagged with GPS benchmarks, GPS on Bench Marks Program, National Geodetic Survey, NGS and posted in Opinions, Survey

Click to enlarge. (Image: NGS)

NGS 2018 GPS on BMs program in support of NAPGD2022 — Part 7

June 6, 2018

My last column described the National Geodetic Survey’s (NGS) GPS on Bench Marks (BM) 2018 interactive web map, […]

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This article is tagged with David B. Zilkoski, GPS on Bench Marks Program, National Geodetic Survey, NGS, OPUS and posted in Opinions, Survey

Image: NOAA's National Geodetic Survey

NGS 2018 GPS on BMs program in support of NAPGD2022 — Part 5

February 7, 2018

My last column highlighted two components of the North American-Pacific Vertical Datum of 2022 (NAPGD2022) — the geoid undulation […]

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This article is tagged with David B. Zilkoski, GPS on Bench Marks Program, GPS on BMs program, NAPGD2022, National Geodetic Survey, NGS and posted in Opinions, Survey