STEP 4: Load Static GNSS Observation Files
==========================================

Load static GNSS observation files through the `OPUS upload portal`_, as shown in :numref:`FigureQS-4.jpg`. If your project contains GVX files and you plan to submit your project to NGS, ensure that you upload :term:`Non-NCN CORS<Non-NCN CORS>` data files, such as static GNSS observation files from RTK/RTN Base or Reference Stations, from the days of your RTK/RTN survey following the static observation requirements.

.. _`OPUS upload portal`:  https://geodesy.noaa.gov/OPUS/

.. _FigureQS-4.jpg:
.. figure:: ../images/FigureQS-4.jpg
   :width: 400 px
   :alt: OPUS GNSS data file upload page

   OPUS GNSS data file upload page

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.. toctree::
  :maxdepth: 2