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  1. www.ngs.noaa.gov › ANTCALAntenna Calibrations - National Oceanic and Atmospheric...

    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.

    • GPS Only

      ANTENNA ID DESCRIPTION DATA SOURCE (# OF TESTS) YR/MO/DY...

    • ANTCAL Home

      NGS offers complete, downloadable files of absolute antenna...

    • Request Calibration

      I have read and accepted the NGS GNSS Antenna Calibration...

    • Disclaimer

      About NGS . What We Do; Mission and Strategic Plan; NGS...

  2. www.ngs.noaa.gov › ANTCAL › docsNGS Antenna Calibration Procedures - National Oceanic and...

    Calibrations take place at NGS’s Testing and Training Center. Since 1994, NGS has computed relative antenna calibrations for more than 500 antennas. These calibrations are publicly available at the web site . http://geodesy.noaa.gov/ANTCAL/. At this time, NGS provides GPS-only calibration services via the relative calibration

  3. geodesy.noaa.gov › ANTCAL › FAQANTCAL FAQ - National Oceanic and Atmospheric Administration

    An antenna calibration is the act of determining the point of reception of the Global Navigation Satellite System (GNSS) carrier phase signals. Antenna hardware such as the antenna elements and pre-amplifiers create signal phase advance and delay before passing the signal to the receiver.

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  5. geodesy.noaa.gov › web › science_eduGNSS Antenna Calibration at NGS | Webinar Series | National...

    14 de ene. de 2021 · This advance enables robust, full-azimuth calibrations for multiple GNSS, beyond simply GPS L1 and L2.This webinar introduces key concepts of antenna calibrations and reviews the history of calibrations at NGS. Absolute antenna calibration research at NGS and preliminary results are also presented.

  6. link.springer.com › article › 10Validating and comparing GNSS antenna calibrations

    22 de mar. de 2018 · The act of determining the phase centre corrections (PCC) for a GNSS antenna is called calibration. In this paper, we introduce a method to validate GNSS antenna calibration tables. The goal is to find the residual offsets due to imperfections in the antenna and its calibration table.

  7. beta.ngs.noaa.gov › OPUS-Projects › user_guideUse the Latest Absolute Antenna Calibrations — OPUS Projects User...

    Since 2011, NGS has been using Absolute Antenna calibrations in the definition of the national reference frames. The latest absolute antenna patterns are automatically used in OPUS and thus OP as well. Within each antenna calibration file there are north and east orientation values.

  8. link.springer.com › content › pdfQuantifying errors in GNSS antenna calibrations

    In addition to antenna calibration corrections, the results can be used with an equivalent tracker combination to determine the phase centers of as-installed individual receiver antennas at system critical sites to the same level without compromising the permanent installations.