SLR monthly full-rate data summary

doi:10.5067/SLR/SLR_DATA_MONTHLYSUM_FR_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 Laser Ranging Service (ILRS), SLR monthly full-rate data summary, Greenbelt, MD, USA:NASA Crustal Dynamics Data Information System (CDDIS), Accessed [[enter user data access date]] at doi:10.5067/SLR/slr_data_monthlysum_fr_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: SLR monthly full-rate data summary
  • Format: ASCII text format
  • Spatial Coverage: 90.0 to -90.0, 180.0 to -180.0
  • Temporal Coverage: 1976-01-01 to present
  • Temporal Resolution: Monthly
  • File Size: 0.25Mb
  • Platforms: See ILRS mission information

Description

Full-rate data include all valid satellite returns and are thus larger in volume; these data are not routinely provided by all stations in the laser tracking network. Full-rate data are useful for both engineering evaluation and scientific applications (e.g., studying the performance of retroreflectors, discerning satellite signatures, understanding the statistical nature of satellite returns, calibration of satellite targets, validating system quality of laser station co-locations, etc.). Although many of these studies are of an engineering nature, the results have an important impact on the quality of the scientific output. Full-rate data are transmitted in daily files containing all data received in the previous 24-hour period. The CDDIS then updates monthly, satellite-specific files from these daily files. The summary files summarize the data passes of the monthly full-rate data files.

CRD format started testing in 2008 and became operational in January 2011. ILRS/CSTG formats were used for normal point data from 1976 through 2011.

Data Access

SLR monthly full-rate data summary files are online. The starting directory varies based on the CRD format version available. Differences between the versions are documented on the ILRS website at https://ilrs.gsfc.nasa.gov/data_and_products/formats/crd.html


in subdirectories by satellite name and year as follows:

SATNAME/YYYY/sum/SATNAME_YYYYMM.sum CRD format

SATNAME/YYYY/sum/SATNAME_sum.YYMM.Z ILRS format

Code Meaning
SATNAME Satellite name
YYYY4-digit year
YY 2-digit year
MM 2-digit month
Z Unix compressed file

Documentation

http://cddis.nasa.gov/Data_and_Derived_Products/SLR/SLR_data_and_product_archive.html