Hourly 30-second GLONASS broadcast ephemeris data


Data Center Citation

Noll, Carey E., The Crustal Dynamics Data Information System: A resource to support scientific analysis using space geodesy, Advances in Space Research, Volume 45, Issue 12, 15 June 2010, Pages 1421-1440, ISSN 0273-1177, http://dx.doi.org/10.1016/j.asr.2010.01.018.

Data Citation

International GNSS Service, Hourly 30-second GLONASS broadcast ephemeris data, Greenbelt, MD, USA:NASA Crustal Dynamics Data Information System (CDDIS), Accessed [[enter user data access date]] at doi:10.5067/GNSS/gnss_hourly_g_001.

Other standard citation formats may be used for this data set and can be found at the DOI Citation Formatter website.

More information about CDDIS data citations and acknowledgments is available.


  • Name: Hourly 30-second GLONASS broadcast ephemeris data
  • Format: RINEX V2, UNIX compressed ASCII
  • Spatial Coverage: 90.0N to -90.0S, 180.0E to -180.0W
  • Temporal Coverage: 2005-10-07 to present
  • Temporal Resolution: Hourly
  • File Size: 200 Kbytes/site/day
  • Platforms: GPS, GLONASS


GNSS data from a global network of permanent GNSS receivers supporting the International GNSS Service (IGS) operating at a 30-second sampling rate and containing 1 hour of data.

Data Access

The hourly 30-second GNSS GLONASS broadcast ephemeris data are online:


in subdirectories by year and day of year as follows:


Code Meaning
YYYY 4-digit year
DDD 3-digit day of year
HH 2-digit hour of day (00, 01, ..., 23)
mmmm 4-character site monument name
YY 2-digit year
.Z UNIX compressed file