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Information on antenna files can be found at ftp://igs.org/pub/station/general/antenna_README.pdf

More detailed information about IGS stations including site guidelines and proposing a new station can be found at igs.org/network/information.

The file https://cddis.gsfc.nasa.gov/archive/gnss/data/daily/ yyyy / ddd / yy n/brdc ddd 0. yy n.Z ( yyyy is the 4-digit year, ddd is the three-digit day of year and yy is the two-digit year) is the daily broadcast ephemeris file. This file is a merge of the individual site navigation files into one...

The igs.org/network/list.html web page provides a list of current IGS sites and links to their site logs; a map is also available.

Access to GNSS data not accessible online can be requested by contacting the CDDIS manager using the "Contact Us" button at the bottom of any CDDIS website page.

Users can view CDDIS daily status files, found in the daily GLONASS data directories, which detail data availability for a particular day at:

https://cddis.nasa.gov/archive/glonass/data/daily/ YYYY/DDD where YYYY is the 4-digit year and DDD is the 3-digit day of the year.

The IGS Central Bureau maintains a table of accuracy information for the official IGS products. Additional information is available from a web page maintained by the Analysis Center Coordinator.

GNSS products are available through anonymous ftp and other methods. GNSS products (preceise ephemerides) since June 1992 are available online. Access the GNSS products by using one of the following methods: anonymous ftp at URL ftp://cddis.gsfc.nasa.gov/gnss/products/. NOTE this method will be disc...

Products derived from GNSS data and available from the CDDIS are provided by analysis centers supporting the International GNSS Service (IGS). IGS operational products include precise GNSS satellite ephemerides, positions and velocities of stations in the global GNSS network, EOPs (polar motion and ...

High-rate GNSS data files are available in hourly subdirectories within the filesystem at https://cddis.nasa.gov/archive/gnss/data/highrate/ YYYY / DDD / YYt / HH / where YYYY is the four-digit year, DDD is the 3-digit day of year, YY is the 2-digit year, t is the type of data, and HH is the numeric...