Welcome to the LSU Center for GeoInformatics (C4G)
Home of the Louisiana Spatial Reference Center (LSRC) and the 
GULFNet Continuously Operating Reference Station (CORS) Network
http://LSRC.lsu.edu

Access to the LSU/C4G/LSRC Free GULFNet CORS data
=================
Data can be retrieved via anonymous ftp from CORS.lsu.edu on port: 8021
or by pointing your browser to ftp://cors.lsu.edu:8021/ GULFNet CORS stations are owned and operated by C4G. The data collected by all GULFNet CORS is distributed to the public free of charge. All LSRC CORS GNSS data files collected from GULFNet CORS stations are made available to NGS & the public in Trimble’s proprietary data-file formats (R00/T00/T01/T02) or (.DAT or .TGD). All GULFNet CORS files found in this data archive are logged in formats by native to Trimble GPS/GNSS receivers from "Record Type 27" (RT27) files. The data include observation, meteorological, navigation/ephemeris for the stations. Most data are available within 1 hour from when they were recorded at each remote CORS site.
Louisiana NGS CORS
======================== NGS redistributes some of the GULFNet CORS data to the public free of charge through its partnership with the LSRC at LSU's Center for GeoInformatics. NGS publishes it's subset of the GULFNet CORS data through their CORS website found at the following links. https://geodesy.noaa.gov/CORS/ http://alt.ngs.noaa.gov/CORS NOAA's National Geodetic Survey (NGS) operates the Continuously Operating Reference Station (CORS) network that consists of group of Global Navigation Satellite System (GNSS) reference stations which provide code range and carrier phase data to users in support of postprocessing applications. The stations are owned and operated by federal, state, local agencies, private companies, and university groups, and NGS redistributes their data to the public free of charge. The GNSS data collected at these stations are made available to the public by NGS in Receiver INdependent EXchange (RINEX) format. The data include observation, meteorological, navigation/ephemeris, station logs and NGS coordinate files for the stations. Most data are available within 1 hour from when they were recorded at the remote site, and a few sites have a delay of 24 hours. ACCESS TO DATA ================= Data can be retrieved via anonymous ftp from geodesy.noaa.gov or alt.ngs.noaa.gov or ftp://geodesy.noaa.gov/cors or ftp://alt.ngs.noaa.gov/cors Alternatively a customized data request service is available at: http://geodesy.noaa.gov/UFCORS FILE RETENTION POLICY ====================== RINEX observation, meteorological, navigation and TEQC summary files: Hourly files are only kept for 2 days Daily files are kept permanently However after 30 days the 24hr (daily) RINEX observation files that are gzipped ({ssss}{ddd}0.{yy}o.gz) are decimated to a 30 second sampling rate equivalent to the {ssss}{ddd}0.{yy}d.Z site specific GPS navigation files are only kept for sites that NGS submits to the IGS network Meteorological files are available only for sites with independent meteorological sensors After six-months to one year the second copy of the RINEX observation files that are gzipped is removed i.e. file name {ssss}{ddd}0.{yy}o.gz All orbit files are kept permanently Coord files are updated as needed Logs files are updated as needed Plot files are updated daily NGS CONTACT INFORMATION ================================== If you have questions about this file or about CORS in general please check http://www.ngs.noaa.gov/CORS/ http://alt.ngs.noaa.gov/CORS or email ngs.cors @ noaa.gov