GPS on Bench Marks: 2022 Transformation Tool Campaign

July 11, 2019  |  2-3 pm, Eastern Time

Galen Scott, National Geodetic Survey

As part of modernizing the National Spatial Reference System, NGS will produce a transformation tool to provide a mapping-grade transformation between the current and new datums. Users are encouraged to submit GPS data on existing bench marks to improve the quality of the transformation in their local areas. NGS has released a new prioritized list of bench marks across the United States and its Territories to direct local users to the marks in their area where new GPS observations would have the biggest impact on the quality of the tool. A new GPSonBM web map is also available that enables users to explore, sort, and download the coordinates on the list.

Intermediate Technical Content Rating: Some prior knowledge is helpful.