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    • Archive of NOAA Continuously Operating Reference Stations (CORS) Network (NCN)

    Metadata Updated: October 18, 2024

    The National Geodetic Survey's (NGS) NOAA Continuously Operating Reference Stations (CORS) Network (NCN) provides Global Navigation Satellite System (GNSS) data consisting of carrier phase and code range measurements in support of three dimensional positioning, meteorology, space weather, and geophysical applications throughout the United States, its territories, and a few foreign countries. Surveyors, GIS users, engineers, scientists, and the public at large that collect GPS data can use CORS data to improve the precision of their positions. CORS enhanced post-processed coordinates approach a few centimeters relative to the National Spatial Reference System (NSRS), both horizontally and vertically. The CORS network is a multi-purpose cooperative endeavor involving government, academic, and private organizations. The sites are independently owned and operated. Each agency shares their data with NGS, and NGS in turn analyzes and distributes the data free of charge.

    Access & Use Information

    License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Date September 14, 2023
    Metadata Created Date October 18, 2024
    Metadata Updated Date October 18, 2024
    Reference Date(s) April 22, 1994 (publication)
    Frequency Of Update daily

    Metadata Source

    Harvested from NGDC Terrestrial

    Other Data Resources

    Graphic Preview

    NCEI Archive of NGS CORS data

    Additional Metadata

    Resource Type Series
    Metadata Date September 14, 2023
    Metadata Created Date October 18, 2024
    Metadata Updated Date October 18, 2024
    Reference Date(s) April 22, 1994 (publication)
    Responsible Party NOAA National Centers for Environmental Information (Point of Contact); Francine Coloma (Point of Contact)
    Contact Email
    Guid gov.noaa.ngdc.stp.terrestrial:G10019
    Access Constraints Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives., Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose., Cite as: NOAA National Geodetic Survey (NGS). 1994. NOAA Archive of NGS National Continuously Operating Reference Station (CORS) Network (NCN) [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/wc4r-ee36. Accessed [date].
    Bbox East Long 180.00
    Bbox North Lat 90.00
    Bbox South Lat -90.00
    Bbox West Long -180.00
    Coupled Resource
    Frequency Of Update daily
    Graphic Preview Description NCEI Archive of NGS CORS data
    Graphic Preview File https://www.ngdc.noaa.gov/image/cors_main765x320.jpg
    Harvest Object Id 9cc7fd9a-1fc9-4ea5-918b-5373080e0ef8
    Harvest Source Id a09b21ad-dbac-4922-9a74-2dc1642476e7
    Harvest Source Title NGDC Terrestrial
    Licence These data are considered raw and have not been subjected to the NOAA's quality control or quality assurance procedures. They are released for limited public use as preliminary data to be used only with appropriate caution. NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.
    Lineage GNSS observational data from the CORS network are ingested, translated, and processed by NGS and are posted to the NGS online servers as hourly or daily files, and ultimately retained as daily files in RINEX format. After 30 days, data in the at-sampling rate is copied to the NCEI archive, and NGS online holdings are then decimated to a 30-second sampling rate. Special use case: Certain groups such as the Federal Aviation Administration, make GNSS data available in binary format to NGS. These data are used as input to algorithms for internal NOAA models such as the US-Total Electron Content product. The Data Center, not NGS, has decided to archive the raw data from these stations as a daily tar file consisting of hourly binary files
    Metadata Language eng; USA
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-180.0, -90.0], [180.0, -90.0], [180.0, 90.0], [-180.0, 90.0], [-180.0, -90.0]]]}
    Progress ongoing
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 1994-02-01

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