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spatialRepresentationInfo
referenceSystemInfo
referenceSystemInfo
identificationInfo
distributionInfo
dataQualityInfo
dataQualityInfo
metadataMaintenance
acquisitionInformation

NOAA CLASS archive: Continuously Operating Reference Stations (CORS)
 (MI_Metadata)
    fileIdentifier:  gov.noaa.class:CORS
    language:  eng; USA
    characterSet:  (MD_CharacterSetCode) utf8
    hierarchyLevel:  (MD_ScopeCode) series
    contact:  (CI_ResponsibleParty)
        individualName:  Francine Coloma
        organisationName:  DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
        contactInfo:  (CI_Contact)
            phone:  (CI_Telephone)
                voice:  303 497-3692
                facsimile:  303 497-6513
            address:  (CI_Address)
                deliveryPoint:  325 Broadway
                city:  Boulder
                administrativeArea:  CO
                postalCode:  80305
                country:  USA
                electronicMailAddress:  Francine.Coloma@noaa.gov
            hoursOfService:  9:00 - 5:00 Mountain
        role:  (CI_RoleCode) pointOfContact
    dateStamp:  2013-08-05
    metadataStandardName:  ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
    metadataStandardVersion:  ISO 19115-2:2009(E)
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    spatialRepresentationInfo:  (MD_GridSpatialRepresentation)
        numberOfDimensions:  2
        axisDimensionProperties:  (MD_Dimension)
            dimensionName:  (MD_DimensionNameTypeCode) column
            dimensionSize:
            resolution:
              Scale:  0.00001
        axisDimensionProperties:  (MD_Dimension)
            dimensionName:  (MD_DimensionNameTypeCode) row
            dimensionSize:
            resolution:
              Scale:  0.00001
        cellGeometry:  (MD_CellGeometryCode) point
        transformationParameterAvailability:  false
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    referenceSystemInfo:  (MD_ReferenceSystem)
        referenceSystemIdentifier:  (RS_Identifier)
            authority:  (CI_Citation)
                title:  CORS Coordinates
                date:  (CI_Date)
                    date:  2011-07-20
                    dateType:  (CI_DateTypeCode) revision
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName:  National Geodetic Survey - CORS
                    contactInfo:  (CI_Contact)
                        onlineResource:  (CI_OnlineResource)
                            linkage: http://www.ngs.noaa.gov/CORS/coords.shtml
                            name:  CORS Coordinates
                            description:  Identification and descriptions of coordinate systems for CORS.
                            function:  (CI_OnLineFunctionCode) information
                    role:  (CI_RoleCode) publisher
            code:  NAD83
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    referenceSystemInfo:  (MD_ReferenceSystem)
        referenceSystemIdentifier:  (RS_Identifier)
            authority:  (CI_Citation)
                title:  CORS Coordinates
                date:  (CI_Date)
                    date:  2011-07-20
                    dateType:  (CI_DateTypeCode) revision
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName:  National Geodetic Survey - CORS
                    contactInfo:  (CI_Contact)
                        onlineResource:  (CI_OnlineResource)
                            linkage: http://www.ngs.noaa.gov/CORS/coords.shtml
                            name:  CORS Coordinates
                            description:  Identification and descriptions of coordinate systems for CORS.
                            function:  (CI_OnLineFunctionCode) information
                    role:  (CI_RoleCode) publisher
            code:  ITRF00
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    identificationInfo:  (MD_DataIdentification)
        citation:  (CI_Citation)
            title:  NOAA CLASS archive: Continuously Operating Reference Stations (CORS)
            date:  (CI_Date)
                date:  2010-10
                dateType:  (CI_DateTypeCode) publication
            citedResponsibleParty:  (CI_ResponsibleParty)
                organisationName:  DOC/NOAA/NOS/NGS > National Geodetic Survey, National Ocean Service, NOAA, U.S. Department of Commerce
                contactInfo:  (CI_Contact)
                    onlineResource:  (CI_OnlineResource)
                        linkage: http://www.ngs.noaa.gov/CORS/
                        name:  National Geodectic Survey - Continuously Operating Reference Stations (CORS)
                        description:  Home page for CORS main facility in Silver Spring, MD
                        function:  (CI_OnLineFunctionCode) information
                role:  (CI_RoleCode) originator
            citedResponsibleParty:  (CI_ResponsibleParty)
                organisationName:  DOC/NOAA/NOS/NGS > National Geodetic Survey, National Ocean Service, NOAA, U.S. Department of Commerce
                contactInfo:  (CI_Contact)
                    onlineResource:  (CI_OnlineResource)
                        linkage: http://alt.ngs.noaa.gov/CORS/
                        name:  National Geodetic Survey - Continuously Operating Reference Stations (CORS)
                        description:  Home page for CORS alternate facility in Boulder, CO
                        function:  (CI_OnLineFunctionCode) information
                role:  (CI_RoleCode) resourceProvider
            citedResponsibleParty:  (CI_ResponsibleParty)
                organisationName:  DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
                role:  (CI_RoleCode) originator
            citedResponsibleParty:  (CI_ResponsibleParty)
                organisationName:  DOC/NOAA/CLASS > Comprehensive Large Array-data Stewardship System, NOAA, U.S. Department of Commerce
                contactInfo:  (CI_Contact)
                    address:  (CI_Address)
                        city:  Boulder
                        administrativeArea:  CO
                role:  (CI_RoleCode) publisher
        abstract:  NOAA CLASS archive: Continuously Operating Reference Stations (CORS) - The National Geodetic Survey (NGS), an office of NOAA's National Ocean Service (NOS), coordinates a network of geodetic-quality CORS stations that provide Global Positioning System (GPS) carrier phase and code range measurements in support of 3-dimensional positioning activities throughout the United States and its territories. The positions of these CORS sites help define the National Spatial Reference System (NSRS). NGS defines and manages the NSRS - the framework for latitude, longitude, height, scale, gravity, orientation and shoreline throughout the U.S. The NSRS provides a consistent national coordinate system to support mapping, charting, navigation, boundary determination, property delineation, infrastructure development, resource evaluation surveys, and scientific applications. The CORS system enables positional accuracies that approach a few centimeters relative to the NSRS, both horizontally and vertically.<br/><br/> While every effort is made to retain data in the original at-sampling rate, there may be cases where only the 30-second decimated rate data exists. Data availability (note latency from present day) for RINEX data is archive start date on 1994:112 and current date at 32-days before present; for raw GPS data (selected sites) is archive start date on 2004:193 and current date at 5 days before present.
        purpose:  NGDC archives the CORS data set as per the NOAA/NOS Records Disposition Schedule, section 1602-12.
        credit:  NGS coordinates a network of CORS stations from over 200 organizations such as federal, state, and local governments, academia, the private sector, and international groups.
        status:  (MD_ProgressCode) underDevelopment
        resourceMaintenance:  (MD_MaintenanceInformation)
            maintenanceAndUpdateFrequency:  (MD_MaintenanceFrequencyCode) daily
        descriptiveKeywords:  (MD_Keywords)
            keyword:  EARTH SCIENCE > Solid Earth > Geodetics/Gravity > Reference Systems
            keyword:  EARTH SCIENCE > Solid Earth > Geodetics/Gravity > Control Surveys
            keyword:  EARTH SCIENCE > Solid Earth > Geodetics/Gravity > Crustal Motion
            keyword:  EARTH SCIENCE > Solid Earth > Tectonics > Plate Tectonics
            keyword:  EARTH SCIENCE > Sun-earth Interactions > Solar Energetic Particle Properties > Total Electron Content
            type:  (MD_KeywordTypeCode) theme
            thesaurusName:  (CI_Citation)
                title:  NASA/GCMD Earth Science Keywords
                date:
        descriptiveKeywords:  (MD_Keywords)
            keyword:  NAVSTAR > NAVSTAR Global Positioning System
            keyword:  GPS > Global Positioning System Satellites
            keyword:  GROUND-BASED OBSERVATIONS
            keyword:  GROUND STATIONS
            keyword:  GNSS > Global Navigation Satellite Systems
            keyword:  GLONASS > Global'naya Navigatsionnaya Sputnikovaya Sistema
            type:  (MD_KeywordTypeCode) theme
            thesaurusName:  (CI_Citation)
                title:  GCMD Platform Keywords
                date:
        descriptiveKeywords:  (MD_Keywords)
            keyword:  Geographic Region > Global
            type:  (MD_KeywordTypeCode) place
            thesaurusName:  (CI_Citation)
                title:  NASA/GCMD Location Keywords
                date:
        descriptiveKeywords:  (MD_Keywords)
            keyword:  Crust
            keyword:  Troposphere
            keyword:  Ionosphere
            type:  (MD_KeywordTypeCode) stratum
            thesaurusName:  (CI_Citation)
                title:  None
                date:
        resourceConstraints:  (MD_LegalConstraints)
            accessConstraints:  (MD_RestrictionCode) otherRestrictions
            useConstraints:  (MD_RestrictionCode) otherRestrictions
            otherConstraints:  Access Constraints: None; Use Constraints: None; Distribution Liability: While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, 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.
        language:  eng; USA
        topicCategory:  (MD_TopicCategoryCode) geoscientificInformation
        topicCategory:  (MD_TopicCategoryCode) location
        extent:  (EX_Extent)
            geographicElement:  (EX_GeographicBoundingBox)
                westBoundLongitude:  -180
                eastBoundLongitude:  180
                southBoundLatitude:  -90
                northBoundLatitude:  90
            temporalElement:  (EX_TemporalExtent)
                extent:
                  TimePeriod:
                    beginPosition:  2010-10
                    endPosition:  2011-08-09T19:13:39.705-06:00
        supplementalInformation:  The United States operates the Global Positioning System (GPS). The term Global Navigation Satellite Systems (GNSS) has been created to reference all navigation satellite systems. GNSS encompasses the U.S. GPS system, the Russian Federation GLONASS system, and any future systems such as Europe's Galileo or China's Compass.
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    distributionInfo:  (MD_Distribution)
        distributionFormat:  (MD_Format)
            name:  ASCII
            version:  2.11
            specification:  Receiver Independent Exchange Format (RINEX)
            fileDecompressionTechnique:  GNU zip compression (gzip)
        distributor:  (MD_Distributor)
            distributorContact:  (CI_ResponsibleParty)
                organisationName:  DOC/NOAA/CLASS > Comprehensive Large Array-data Stewardship System, NOAA, U.S. Department of Commerce
                contactInfo:  (CI_Contact)
                    phone:  (CI_Telephone)
                        voice:  (828) 271-4850 x3183
                        facsimile:  (828) 271-4328
                    address:  (CI_Address)
                        deliveryPoint:  CLASS, 151 Patton Avenue
                        city:  Asheville
                        administrativeArea:  NC
                        postalCode:  28801-5001
                        country:  USA
                        electronicMailAddress:  info@class.noaa.gov
                    hoursOfService:  9:00 - 5:00 EST
                    contactInstructions:  Phone/E-mail/letter. CLASS provides data free of charge. Anyone can search the CLASS catalog and view search results through CLASS's World Wide Web (WWW) site. Users who wish to order data are required to register with their names and email addresses. CLASS distributes data to those users via FTP services.
                role:  (CI_RoleCode) distributor
            distributionOrderProcess:  (MD_StandardOrderProcess)
                fees:  None
                plannedAvailableDateTime:
                  DateTime:  2010-10-01T00:00:00
                orderingInstructions:  Download from CLASS
        transferOptions:  (MD_DigitalTransferOptions)
            onLine:  (CI_OnlineResource)
                linkage: http://www.class.noaa.gov/
                name:  CLASS Homepage
                description:  Order options for NGS Continuously Operating Reference Stations (CORS) datasets archived and distributed at CLASS.
                function:  (CI_OnLineFunctionCode) order
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    dataQualityInfo:  (DQ_DataQuality)
        scope:  (DQ_Scope)
            level:  (MD_ScopeCode) series
        report:  (DQ_AbsoluteExternalPositionalAccuracy)
            nameOfMeasure:  Horizontal Positional Accuracy
            evaluationMethodDescription:  The horizontal coordinates of the GPS site, specifically the GPS antenna location, are accurate to about a centimeter once biases are removed.
            dateTime:
            result:
        report:  (DQ_AbsoluteExternalPositionalAccuracy)
            nameOfMeasure:  Vertical Positional Accuracy
            evaluationMethodDescription:  The vertical coordinates of the GPS site, specifically the GPS antenna location, are accurate to about 2 centimeters.
            result:  (DQ_QuantitativeResult)
                valueUnit:
                  BaseUnit:
                    identifier:  meters
                    unitsSystem:  http://www.bipm.org/en/si/
                value:
        report:  (DQ_CompletenessCommission)
            evaluationMethodDescription:  Data written to the CLASS archive is reviewed for completeness. Automated routines perform daily checks for file names and file sizes, and also aided by the internal checksum of GNU zip compression as data is written to tape. Any faulty data is removed from the archive.
            result:
        report:  (DQ_ConceptualConsistency)
            measureDescription:  To become part of the CORS network, each site must pass through NGS' site criteria standards and maintain its integrity. Automated routines at NGDC pull data staged by NGS at regular intervals.
            result:
        report:  (DQ_NonQuantitativeAttributeAccuracy)
            measureDescription:  The carrier phase observations are accurate to a few centimeters, once biases have been removed.
            result:
        lineage:  (LI_Lineage)
            processStep:  (LI_ProcessStep)
                description:  GNSS observational data from sites are ingested by NGS and are posted to the NGS online servers as daily files in RINEX format (ASCII). The NGDC archive has automated daily routines that selectively pull in the daily observational files at the original sampling rate, the daily observational summary file, the daily broadcast ephemeris files, and any corresponding meteorological files. Each site has a metadata record retained as a site log file (ASCII).
                dateTime:
                  DateTime:  2010-10-01T00:00:00
                processor:  (CI_ResponsibleParty)
                    individualName:  User Services
                    organisationName:  DOC/NOAA/NOS/NGS > National Geodetic Survey, National Ocean Service, NOAA, U.S. Department of Commerce
                    contactInfo:  (CI_Contact)
                        phone:  (CI_Telephone)
                            voice:  301-713-3191
                            facsimile:  301-713-4324
                        address:  (CI_Address)
                            deliveryPoint:  Spatial Reference System Division
                            deliveryPoint:  1315 East-West Highway
                            deliveryPoint:  N/NGS2, SSMC3, Room 8813
                            city:  Silver Spring
                            administrativeArea:  MD
                            postalCode:  20910
                            country:  U.S.A.
                            electronicMailAddress:  ngs.cors@noaa.gov
                    role:  (CI_RoleCode) processor
                source:  (LI_Source)
                    description:  Source Contribution: GNSS data in RINEX format (ASCII) and station metadata (ASCII) digital files via FTP
                    sourceCitation:  (CI_Citation)
                        title:  NOAA CLASS archive: Continuously Operating Reference Stations (CORS)
                        alternateTitle:  GNSS
                        date:  (CI_Date)
                            date:  2010-10
                            dateType:  (CI_DateTypeCode) publication
                        citedResponsibleParty:  (CI_ResponsibleParty)
                            organisationName:  DOC/NOAA/NOS/NGS > National Geodetic Survey, National Ocean Service, NOAA, U.S. Department of Commerce
                            role:  (CI_RoleCode) resourceProvider
                        citedResponsibleParty:  (CI_ResponsibleParty)
                            organisationName:  DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce (comp.)
                            role:  (CI_RoleCode) resourceProvider
                    sourceExtent:  (EX_Extent)
                        temporalElement:  (EX_TemporalExtent)
                            extent:
                              TimePeriod:
                                description:  ground condition
                                beginPosition:  2010-11
                                endPosition:  2011-08-09T19:13:39.705-06:00
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    dataQualityInfo:  (DQ_DataQuality)
        scope:  (DQ_Scope)
            level:  (MD_ScopeCode) series
        lineage:  (LI_Lineage)
            processStep:  (LE_ProcessStep)
                description:  U.S. Air Force Space Command (AFSC) formally declared the GPS satellite constellation consisting of 24 GPS satellites (Block I and Block II/IIA) as having met the requirement for Initial Operational Capability (IOC).
                dateTime:
                  DateTime:  1993-12-08T00:00:00
            processStep:  (LI_ProcessStep)
                description:  The first operational CORS station is NGS-owned station GAIT in Gaithersburg, MD.
                dateTime:
                  DateTime:  1994-04-22T00:00:00
            processStep:  (LE_ProcessStep)
                description:  The U.S. Air Force Space Command (AFSC) formally declared the GPS satellite constellation as having met the requirement for Full Operational Capability (FOC) as of April 27, 1995. Requirements include 24 operational satellites (Block II/IIA) functioning in their assigned orbits and successful testing completed for operational military functionality.
                dateTime:
                  DateTime:  1995-04-27T00:00:00
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    metadataMaintenance:  (MD_MaintenanceInformation)
        maintenanceAndUpdateFrequency:  (MD_MaintenanceFrequencyCode) annually
        contact:  (CI_ResponsibleParty)
            individualName:  Francine Coloma
            organisationName:  DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
            contactInfo:  (CI_Contact)
                phone:  (CI_Telephone)
                    voice:  303 497-3692
                    facsimile:  303 497-6513
                address:  (CI_Address)
                    deliveryPoint:  325 Broadway
                    city:  Boulder
                    administrativeArea:  CO
                    postalCode:  80305
                    country:  USA
                    electronicMailAddress:  Francine.Coloma@noaa.gov
                hoursOfService:  9:00 - 5:00 Mountain
            role:  (CI_RoleCode) custodian
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    acquisitionInformation:  (MI_AcquisitionInformation)
        operation:  (MI_Operation)
            description:  Global Navigation Satellite Systems (GNSS) is a generic term used to describe the space-based constellations that provide carrier phase, code range, and clock information in support of 3-dimensional positioning activities. This term encompasses existing satellite navigation systems such as the Global Positioning System (GPS) of the United States and the GLObal'naya NAvigatsionnaya Sputnikovaya Sistema (GLONASS) of Russia and also upcoming systems such as the Galileo system of the European Union (EU) and the European Space Agency (ESA), and the COMPASS/Beidou system of China.
            identifier:  (MD_Identifier)
                code:  GNSS > Global Navigation Satellite System
            status:  (MD_ProgressCode) onGoing
            parentOperation:
        platform:  (MI_Platform)
            identifier:  (MD_Identifier)
                code:  GPS > Global Positioning System
            description:  The U.S. Air Force of the Department of Defense developed, maintains, and operates the space and control segments of the GPS constellation. Full Operational Capability was declared by NAVSTAR in April 1995.
            sponsor:  (CI_ResponsibleParty)
                organisationName:  United States Air Force
                role:  (CI_RoleCode) owner
            instrument:  (MI_Instrument)
                identifier:  (MD_Identifier)
                    code:  GPS Receiver
                type:  Positioning/Navigation
        platform:  (MI_Platform)
            identifier:  (MD_Identifier)
                code:  GLONASS > Global'naya Navigatsionnaya Sputnikovaya Sistema
            description:  The Global'naya Navigatsionnaya Sputnikovaya Sistema (GLONASS) is a Soviet space-based navigation system comparable to the American GPS system. The operational system contains 21 satellites in 3 orbital planes, with 3 on-orbit spares. Glonass provides 100 meters accuracy with its C/A (deliberately degraded) signals and 10-20 meter accuracy with its P (military) signals. http://www.glonass-ianc.rsa.ru/pls/htmldb/f?p=202:1:6462407165002138::NO
            sponsor:  (CI_ResponsibleParty)
                organisationName:  Russian Federation
                role:  (CI_RoleCode) owner
            instrument:  (MI_Instrument)
                identifier:  (MD_Identifier)
                    code:  GNSS receiver
                type:  Positioning/Navigation