This web site provides Global Navigation Satellite System (GNSS) antenna calibrations for specific antenna types (antenna code + radome code). These calibrations are used by NGS for processing GNSS data in all its products and services.
NGS offers complete, downloadable files of absolute antenna calibrations in both ANTEX and ANTINFO formats. These can be found under the "Access Calibrations for All Antennas" menu above.
A new reference system, IGS20, was released on 2 October 2022, replacing the previous IGS14 reference system. As a service to users, NGS will offer composite antenna calibration files in both the deprecated IGS14 and current IGS20 reference systems during a transition period.
When processing data, please check that you are using the antenna calibration product for the reference frame (IGS14 or IGS20) consistent with the orbits and CORS coordinates in your software. Using products from a mix of reference frames may result in several cm of positioning error.
Click on menu item “Browse Antenna Information by Company Brand and Model” to view antenna metadata such as photographs, diagrams, height measurement points, and written descriptions. From the company brand pages, you can view and download absolute antenna calibrations in the IGS20 frame for one antenna at a time.
If you need older products such as IGS08 calibrations, please contact ngs.antcal @ noaa.gov.
NGS also calibrates survey-grade antennas from qualified providers. See Policy and Procedures documents for details.
