Attention CORS and OPUS users. The NGS has announced the availability of BETA coordinates for CORS and OPUS websites.
BETA Release Overview
Updated Coordinates and Velocities
BETA Continuously Operating Reference Stations (CORS) coordinates and velocities are now available on the NGS BETA web site for testing.
These new International Terrestrial Reference Frame 2014 (ITRF2014) coordinates and a within-realization update of NAD83(2011) CORS coordinates are available on BETA CORS web pages and within the BETA Online Positioning User Service (OPUS) web pages:
- BETA CORS Homepage
- BETA Description of the CORS reprocessing/results
- BETA OPUS
- BETA OPUS-Projects
Within a few weeks, NGS will BETA release GEOID18, a hybrid geoid model that will provide improved GPS-derived North American Vertical Datum of 1988 (NAVD88)-equivalent heights and ultimately replace GEOID12B. The BETA GEOID18 products will be available for testing in the BETA OPUS products as well.
GEOID18 will be the last hybrid geoid model that NGS will create before NAVD88 is replaced by the North American-Pacific Geopotential Datum of 2022.
Why Upgrade CORS and OPUS?
In 2017, the International GNSS Service (IGS) released the new coordinates and corresponding antenna calibrations in the IGS realization of the ITRF2014 reference frame. As part of this transition, products in the IGS08 frame are no longer updated. Instead, all the updates will be in the ITRF2014 frame.
NGS has completed a reprocessing of the CORS, which is aligned to the ITRF2014 frame and will supersede the previous reference frame and realization, i.e., NAD83(2011), after BETA testing is complete.
This reprocessing campaign resulted in updated coordinates and velocities that address many changes since CORS coordinates were last updated in 2011, including but not limited to:
- Geophysical Processes (e.g., earthquakes),
- Equipment Changes, and
- New CORS with longer data sets since 2011.
Please note: You should only use BETA to test workflows and provide feedback. Output (e.g., coordinates) from a BETA tool should never be used for official or production work.
NGS always welcomes feedback about its products and services. Email NGS.Feedback@noaa.gov with suggestions at anytime.
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