GNSS Final Combined Earth Rotation Parameter (ERP) Product

doi: 10.5067/GNSS/gnss_igserp_001

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, GNSS Final Combined Earth Rotation Parameter (ERP) Product, Greenbelt, MD, USA:NASA Crustal Dynamics Data Information System (CDDIS), Accessed [[enter user data access date]] at doi:10.5067/GNSS/gnss_igserp_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.

Summary

  • Name: GNSS Final Combined Earth Rotation Parameter (ERP) Product available from the Crustal Dynamics Data Information System (CDDIS)
  • Format: IGS ERP format, UNIX compressed ASCII
  • Spatial Coverage: 90.0 to -90.0, 180.0 to -180.0
  • Temporal Coverage: 1992-01-01 to present
  • Temporal Resolution: Daily
  • File Size: 1 Kbyte/day
  • Platforms: GPS, GLONASS

Description

GNSS Final Combined Earth Rotation Parameter (ERP) Product available from the Crustal Dynamics Data Information System (CDDIS). GNSS Earth rotation parameter solutions (final solution) produced by the International GNSS Service (IGS). This final solution is the most consistent and highest quality IGS solutions produced in conjunction with the daily orbit and clock files, generated on a weekly basis by combining solutions from individual IGS Analysis Centers, approximately 13 days after the end of the solution week. The IGS final products are the basis for the IGS reference frame and are intended for those applications demanding high consistency and quality.

Data Access

GNSS Final Combined Earth Rotation Parameter (ERP) Products are online:

ftp://cddis.nasa.gov/gnss/products/   (GPS and GPS+GLONASS solutions)

Append the following directory and file names to the starting directory:

WWWW/igsWWWWD.erp.Z

as described in the table below.

Code Meaning
WWWW GPS week
Dday of week (0-6, 7 indicates weekly)
.Z UNIX compressed file

Documentation

http://cddis.nasa.gov/Data_and_Derived_Products/GNSS/GNSS_data_and_product_archive.html