NOAACORS_ISO_NGDAMetadataExample_20211222.xml
—
Extensible Markup Language (XML),
57 kB (58545 bytes)
File contents
<?xml version="1.0" encoding="UTF-8"?>
<!-- this is an example metadata record only - it does not represent an actual dataset - the record was adapted from an actual metadata to illustrate NGDA metadata requirements-->
<gmi:MI_Metadata xmlns:gmi="http://www.isotc211.org/2005/gmi" xmlns:gco="http://www.isotc211.org/2005/gco" xmlns:gmd="http://www.isotc211.org/2005/gmd" xmlns:gml="http://www.opengis.net/gml/3.2" xmlns:gmx="http://www.isotc211.org/2005/gmx" xmlns:gsr="http://www.isotc211.org/2005/gsr" xmlns:gss="http://www.isotc211.org/2005/gss" xmlns:gts="http://www.isotc211.org/2005/gts" xmlns:srv="http://www.isotc211.org/2005/srv" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.isotc211.org/2005/gmi https://data.noaa.gov/resources/iso19139/schema.xsd" uuid="dc73a922-1367-44d2-ba01-ccd41c06a23f">
<gmd:fileIdentifier>
<gco:CharacterString>gov.noaa.nmfs.inport:39662</gco:CharacterString>
</gmd:fileIdentifier>
<gmd:language>
<gmd:LanguageCode codeList="http://www.loc.gov/standards/iso639-2/php/code_list.php" codeListValue="eng">eng</gmd:LanguageCode>
</gmd:language>
<gmd:characterSet>
<gmd:MD_CharacterSetCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#MD_CharacterSetCode" codeListValue="UTF8">UTF8</gmd:MD_CharacterSetCode>
</gmd:characterSet>
<gmd:hierarchyLevel>
<gmd:MD_ScopeCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#MD_ScopeCode" codeListValue="dataset">dataset</gmd:MD_ScopeCode>
</gmd:hierarchyLevel>
<gmd:contact>
<gmd:CI_ResponsibleParty>
<gmd:organisationName>
<gco:CharacterString>National Oceanic and Atmospheric Adminstration (NOAA) National Geodetic Survey (NGS) Communications and Outreach Branch</gco:CharacterString>
</gmd:organisationName>
<gmd:contactInfo>
<gmd:CI_Contact>
<gmd:phone>
<gmd:CI_Telephone>
<gmd:voice>
<gco:CharacterString>(301) 713-3242</gco:CharacterString>
</gmd:voice>
<gmd:facsimile>
<gco:CharacterString>(301) 713-4172</gco:CharacterString>
</gmd:facsimile>
</gmd:CI_Telephone>
</gmd:phone>
<gmd:address>
<gmd:CI_Address>
<gmd:electronicMailAddress>
<gco:CharacterString>ngs.infocenter@noaa.gov</gco:CharacterString>
</gmd:electronicMailAddress>
</gmd:CI_Address>
</gmd:address>
</gmd:CI_Contact>
</gmd:contactInfo>
<gmd:role>
<gmd:CI_RoleCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#gmd:CI_RoleCode" codeListValue="resourceProvider">resourceProvider</gmd:CI_RoleCode>
</gmd:role>
</gmd:CI_ResponsibleParty>
</gmd:contact>
<gmd:dateStamp>
<gco:DateTime>2021-09-14T19:20:49</gco:DateTime>
</gmd:dateStamp>
<gmd:metadataStandardName>
<gco:CharacterString>ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data</gco:CharacterString>
</gmd:metadataStandardName>
<gmd:metadataStandardVersion>
<gco:CharacterString>ISO 19115-2:2009(E)</gco:CharacterString>
</gmd:metadataStandardVersion>
<gmd:referenceSystemInfo>
<gmd:MD_ReferenceSystem>
<gmd:referenceSystemIdentifier>
<gmd:RS_Identifier>
<gmd:code>
<gco:CharacterString>EPSG::6319</gco:CharacterString>
</gmd:code>
</gmd:RS_Identifier>
</gmd:referenceSystemIdentifier>
</gmd:MD_ReferenceSystem>
</gmd:referenceSystemInfo>
<gmd:referenceSystemInfo>
<gmd:MD_ReferenceSystem>
<gmd:referenceSystemIdentifier>
<gmd:RS_Identifier>
<gmd:code>
<gco:CharacterString>EPSG::6321</gco:CharacterString>
</gmd:code>
</gmd:RS_Identifier>
</gmd:referenceSystemIdentifier>
</gmd:MD_ReferenceSystem>
</gmd:referenceSystemInfo>
<gmd:referenceSystemInfo>
<gmd:MD_ReferenceSystem>
<gmd:referenceSystemIdentifier>
<gmd:RS_Identifier>
<gmd:code>
<gco:CharacterString>EPSG::6322</gco:CharacterString>
</gmd:code>
</gmd:RS_Identifier>
</gmd:referenceSystemIdentifier>
</gmd:MD_ReferenceSystem>
</gmd:referenceSystemInfo>
<gmd:referenceSystemInfo>
<gmd:MD_ReferenceSystem>
<gmd:referenceSystemIdentifier>
<gmd:RS_Identifier>
<gmd:code>
<gco:CharacterString>EPSG::6325</gco:CharacterString>
</gmd:code>
</gmd:RS_Identifier>
</gmd:referenceSystemIdentifier>
</gmd:MD_ReferenceSystem>
</gmd:referenceSystemInfo>
<gmd:identificationInfo>
<gmd:MD_DataIdentification>
<gmd:citation>
<gmd:CI_Citation>
<gmd:title>
<gco:CharacterString>Continuously Operating Reference Stations (CORS)</gco:CharacterString>
</gmd:title>
<gmd:alternateTitle>
<gco:CharacterString>NCN</gco:CharacterString>
</gmd:alternateTitle>
<gmd:date>
<gmd:CI_Date>
<gmd:date>
<gco:Date>1994-04-21</gco:Date>
</gmd:date>
<gmd:dateType>
<gmd:CI_DateTypeCode codeList="http://www.isotc211.org/2005/resources/codeList.xml#CI_DateTypeCode" codeListValue="publication">publication</gmd:CI_DateTypeCode>
</gmd:dateType>
</gmd:CI_Date>
</gmd:date>
<gmd:identifier>
<gmd:MD_Identifier>
<gmd:authority>
<gmd:CI_Citation>
<gmd:title>
<gco:CharacterString>NOAA/NMFS/EDM</gco:CharacterString>
</gmd:title>
<gmd:date>
<gmd:CI_Date>
<gmd:date>
<gco:Date>2021</gco:Date>
</gmd:date>
<gmd:dateType>
<gmd:CI_DateTypeCode codeList="http://www.isotc211.org/2005/resources/codeList.xml#CI_DateTypeCode" codeListValue="publication">publication</gmd:CI_DateTypeCode>
</gmd:dateType>
</gmd:CI_Date>
</gmd:date>
</gmd:CI_Citation>
</gmd:authority>
<gmd:code>
<gmx:Anchor xlink:href="https://www.fisheries.noaa.gov/inport/item/39662" xlink:actuate="onRequest" xlink:title="InPort Catalog ID">39662</gmx:Anchor>
</gmd:code>
</gmd:MD_Identifier>
</gmd:identifier>
<gmd:citedResponsibleParty>
<gmd:CI_ResponsibleParty>
<gmd:organisationName>
<gco:CharacterString>National Oceanic and Atmospheric Adminstration (NOAA) National Geodetic Survey (NGS) Communications and Outreach Branch</gco:CharacterString>
</gmd:organisationName>
<gmd:contactInfo>
<gmd:CI_Contact>
<gmd:onlineResource>
<gmd:CI_OnlineResource>
<gmd:linkage>
<gmd:URL>https://www.fisheries.noaa.gov/inport/item/39662</gmd:URL>
</gmd:linkage>
<gmd:protocol>
<gco:CharacterString>WWW:LINK-1.0-http--link</gco:CharacterString>
</gmd:protocol>
<gmd:name>
<gco:CharacterString>Full Metadata Record</gco:CharacterString>
</gmd:name>
<gmd:description>
<gco:CharacterString>View the complete metadata record on InPort for more information about this dataset.</gco:CharacterString>
</gmd:description>
<gmd:function>
<gmd:CI_OnLineFunctionCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_OnLineFunctionCode" codeListValue="information">information</gmd:CI_OnLineFunctionCode>
</gmd:function>
</gmd:CI_OnlineResource>
</gmd:onlineResource>
</gmd:CI_Contact>
</gmd:contactInfo>
<gmd:role>
<gmd:CI_RoleCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#gmd:CI_RoleCode" codeListValue="resourceProvider">resourceProvider</gmd:CI_RoleCode>
</gmd:role>
</gmd:CI_ResponsibleParty>
</gmd:citedResponsibleParty>
<gmd:citedResponsibleParty>
<gmd:CI_ResponsibleParty>
<gmd:organisationName>
<gco:CharacterString>National Oceanic and Atmospheric Adminstration (NOAA) National Geodetic Survey (NGS) Communications and Outreach Branch</gco:CharacterString>
</gmd:organisationName>
<gmd:contactInfo>
<gmd:CI_Contact>
<gmd:onlineResource>
<gmd:CI_OnlineResource>
<gmd:linkage>
<gmd:URL>https://geodesy.noaa.gov/CORS/</gmd:URL>
</gmd:linkage>
<gmd:protocol>
<gco:CharacterString>WWW:LINK-1.0-http--link</gco:CharacterString>
</gmd:protocol>
<gmd:name>
<gco:CharacterString>NOAA CORS Network (NCN) main data page</gco:CharacterString>
</gmd:name>
<gmd:description>
<gco:CharacterString>CORS Main page</gco:CharacterString>
</gmd:description>
<gmd:function>
<gmd:CI_OnLineFunctionCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_OnLineFunctionCode" codeListValue="information">information</gmd:CI_OnLineFunctionCode>
</gmd:function>
</gmd:CI_OnlineResource>
</gmd:onlineResource>
</gmd:CI_Contact>
</gmd:contactInfo>
<gmd:role>
<gmd:CI_RoleCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#gmd:CI_RoleCode" codeListValue="resourceProvider">resourceProvider</gmd:CI_RoleCode>
</gmd:role>
</gmd:CI_ResponsibleParty>
</gmd:citedResponsibleParty>
</gmd:CI_Citation>
</gmd:citation>
<gmd:abstract>
<gco:CharacterString>The National Geodetic Survey (NGS), an office of NOAA's National Ocean Service, manages a network of Continuously Operating Reference Stations (CORS) that provide 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. This is called the NOAA CORS Network (NCN)
Surveyors, GIS users, engineers, scientists, and the public at large that collect GPS or GNSS data can use NOAA's 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, both horizontally and vertically.
The NCN 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. As of August 2018, the NCN provides data from more than 2,000 active sites. NCN data holdings to include decommissioned stations, comes to a total of 2,718 sites. These sites are contributed by over 230 different organizations, and the network continues to expand.</gco:CharacterString>
</gmd:abstract>
<gmd:purpose>
<gco:CharacterString>The NCN data set enables users to attain centimeter-level positioning for points of interest and can be used to measure crustal motion, moisture content for the lower atmosphere, and total electron content (TEC) in the upper atmosphere.</gco:CharacterString>
</gmd:purpose>
<gmd:credit>
<gco:CharacterString>The NCN system benefits from a multipurpose cooperative endeavor involving NGS, many governmental, academic, commercial and private organizations who own and operate the bulk of the participating sites.</gco:CharacterString>
</gmd:credit>
<gmd:status>
<gmd:MD_ProgressCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#gmd:MD_ProgressCode" codeListValue="completed">completed</gmd:MD_ProgressCode>
</gmd:status>
<gmd:pointOfContact>
<gmd:CI_ResponsibleParty>
<gmd:organisationName>
<gco:CharacterString>National Oceanic and Atmospheric Administration (NOAA)</gco:CharacterString>
</gmd:organisationName>
<gmd:contactInfo>
<gmd:CI_Contact>
<gmd:phone>
<gmd:CI_Telephone>
<gmd:voice>
<gco:CharacterString>(301) 713-3242</gco:CharacterString>
</gmd:voice>
<gmd:facsimile>
<gco:CharacterString>(301) 713-4172</gco:CharacterString>
</gmd:facsimile>
</gmd:CI_Telephone>
</gmd:phone>
<gmd:address>
<gmd:CI_Address>
<gmd:electronicMailAddress>
<gco:CharacterString>ngs.infocenter@noaa.gov</gco:CharacterString>
</gmd:electronicMailAddress>
</gmd:CI_Address>
</gmd:address>
</gmd:CI_Contact>
</gmd:contactInfo>
<gmd:role>
<gmd:CI_RoleCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#gmd:CI_RoleCode" codeListValue="pointOfContact">pointOfContact</gmd:CI_RoleCode>
</gmd:role>
</gmd:CI_ResponsibleParty>
</gmd:pointOfContact>
<gmd:pointOfContact>
<gmd:CI_ResponsibleParty>
<gmd:organisationName>
<gco:CharacterString>NGS Communications and Outreach Branch</gco:CharacterString>
</gmd:organisationName>
<gmd:contactInfo>
<gmd:CI_Contact>
<gmd:phone>
<gmd:CI_Telephone>
<gmd:voice>
<gco:CharacterString>(301) 713-3242</gco:CharacterString>
</gmd:voice>
<gmd:facsimile>
<gco:CharacterString>(301) 713-4172</gco:CharacterString>
</gmd:facsimile>
</gmd:CI_Telephone>
</gmd:phone>
<gmd:address>
<gmd:CI_Address>
<gmd:deliveryPoint gco:nilReason="missing" />
<gmd:city gco:nilReason="missing" />
<gmd:administrativeArea gco:nilReason="missing" />
<gmd:postalCode gco:nilReason="missing" />
<gmd:country gco:nilReason="missing" />
<gmd:electronicMailAddress>
<gco:CharacterString>ngs.infocenter@noaa.gov</gco:CharacterString>
</gmd:electronicMailAddress>
</gmd:CI_Address>
</gmd:address>
</gmd:CI_Contact>
</gmd:contactInfo>
<gmd:role>
<gmd:CI_RoleCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#gmd:CI_RoleCode" codeListValue="custodian">custodian</gmd:CI_RoleCode>
</gmd:role>
</gmd:CI_ResponsibleParty>
</gmd:pointOfContact>
<gmd:resourceMaintenance>
<gmd:MD_MaintenanceInformation>
<gmd:maintenanceAndUpdateFrequency>
<gmd:MD_MaintenanceFrequencyCode codeList="http://www.tc211.org/ISO19139/resources/codeList.xml#MD_MaintenanceFrequencyCode" codeListValue="continual">continual</gmd:MD_MaintenanceFrequencyCode>
</gmd:maintenanceAndUpdateFrequency>
</gmd:MD_MaintenanceInformation>
</gmd:resourceMaintenance>
<gmd:graphicOverview>
<gmd:MD_BrowseGraphic>
<gmd:fileName>
<gco:CharacterString>https://geodesy.noaa.gov/CORS_Map/</gco:CharacterString>
</gmd:fileName>
<gmd:fileDescription>
<gco:CharacterString>NCN interactive map</gco:CharacterString>
</gmd:fileDescription>
</gmd:MD_BrowseGraphic>
</gmd:graphicOverview>
<gmd:descriptiveKeywords>
<gmd:MD_Keywords>
<gmd:keyword>
<gco:CharacterString>GPS : Global Positioning System</gco:CharacterString>
</gmd:keyword>
<gmd:type>
<gmd:MD_KeywordTypeCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#gmd:MD_KeywordTypeCode" codeListValue="theme">theme</gmd:MD_KeywordTypeCode>
</gmd:type>
<gmd:thesaurusName>
<gmd:CI_Citation>
<gmd:title>
<gco:CharacterString>GCMD Instruments/Sensors Keywords</gco:CharacterString>
</gmd:title>
<gmd:date gco:nilReason="missing" />
</gmd:CI_Citation>
</gmd:thesaurusName>
</gmd:MD_Keywords>
</gmd:descriptiveKeywords>
<gmd:descriptiveKeywords>
<gmd:MD_Keywords>
<gmd:keyword>
<gco:CharacterString>GPS Global Positioning System Satellites</gco:CharacterString>
</gmd:keyword>
<gmd:keyword>
<gco:CharacterString>GROUND STATIONS</gco:CharacterString>
</gmd:keyword>
<gmd:keyword>
<gco:CharacterString>GROUND-BASED OBSERVATIONS</gco:CharacterString>
</gmd:keyword>
<gmd:keyword>
<gco:CharacterString>NAVSTAR NAVSTAR Global Positioning System</gco:CharacterString>
</gmd:keyword>
<gmd:type>
<gmd:MD_KeywordTypeCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#gmd:MD_KeywordTypeCode" codeListValue="theme">theme</gmd:MD_KeywordTypeCode>
</gmd:type>
<gmd:thesaurusName>
<gmd:CI_Citation>
<gmd:title>
<gco:CharacterString>GCMD Platform Keywords</gco:CharacterString>
</gmd:title>
<gmd:date gco:nilReason="unknown" />
</gmd:CI_Citation>
</gmd:thesaurusName>
</gmd:MD_Keywords>
</gmd:descriptiveKeywords>
<gmd:descriptiveKeywords>
<gmd:MD_Keywords>
<gmd:keyword>
<gco:CharacterString>Geodetic Control Theme</gco:CharacterString>
</gmd:keyword>
<gmd:keyword>
<gco:CharacterString>NGDA</gco:CharacterString>
</gmd:keyword>
<gmd:keyword>
<gco:CharacterString>National Geospatial Data Asset</gco:CharacterString>
</gmd:keyword>
<gmd:keyword>
<gco:CharacterString>NGDAID48</gco:CharacterString>
</gmd:keyword>
<gmd:type>
<gmd:MD_KeywordTypeCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#gmd:MD_KeywordTypeCode" codeListValue="theme">theme</gmd:MD_KeywordTypeCode>
</gmd:type>
<gmd:thesaurusName>
<gmd:CI_Citation>
<gmd:title>
<gco:CharacterString>NGDA Portfolio Themes</gco:CharacterString>
</gmd:title>
<gmd:date>
<gmd:CI_Date>
<gmd:date>
<gco:Date>2021</gco:Date>
</gmd:date>
<gmd:dateType>
<gmd:CI_DateTypeCode codeList="http://www.isotc211.org/2005/resources/codeList.xml#CI_DateTypeCode" codeListValue="publication">publication</gmd:CI_DateTypeCode>
</gmd:dateType>
</gmd:CI_Date>
</gmd:date>
</gmd:CI_Citation>
</gmd:thesaurusName>
</gmd:MD_Keywords>
</gmd:descriptiveKeywords>
<gmd:descriptiveKeywords>
<gmd:MD_Keywords>
<gmd:keyword>
<gco:CharacterString>Geodetic/Global Positioning</gco:CharacterString>
</gmd:keyword>
<gmd:type>
<gmd:MD_KeywordTypeCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#gmd:MD_KeywordTypeCode" codeListValue="theme">theme</gmd:MD_KeywordTypeCode>
</gmd:type>
<gmd:thesaurusName>
<gmd:CI_Citation>
<gmd:title>
<gco:CharacterString>NOS Data Explorer Topic Category</gco:CharacterString>
</gmd:title>
<gmd:date gco:nilReason="unknown"/>
</gmd:CI_Citation>
</gmd:thesaurusName>
</gmd:MD_Keywords>
</gmd:descriptiveKeywords>
<gmd:descriptiveKeywords>
<gmd:MD_Keywords>
<gmd:keyword>
<gco:CharacterString>DOC/NOAA/NOS/NGS > National Geodetic Survey, National Ocean Service, NOAA, U.S. Department of Commerce</gco:CharacterString>
</gmd:keyword>
<gmd:type>
<gmd:MD_KeywordTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode" codeListValue="dataCentre">dataCentre</gmd:MD_KeywordTypeCode>
</gmd:type>
<gmd:thesaurusName>
<gmd:CI_Citation uuid="9f0de6e6-428b-11df-9879-0800200c9a66">
<gmd:title>
<gco:CharacterString>Global Change Master Directory (GCMD) Data Center Keywords</gco:CharacterString>
</gmd:title>
<gmd:date>
<gmd:CI_Date>
<gmd:date>
<gco:Date>2017-04-24</gco:Date>
</gmd:date>
<gmd:dateType>
<gmd:CI_DateTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#CI_DateTypeCode" codeListValue="publication">publication</gmd:CI_DateTypeCode>
</gmd:dateType>
</gmd:CI_Date>
</gmd:date>
<gmd:edition>
<gco:CharacterString>8.5</gco:CharacterString>
</gmd:edition>
<gmd:citedResponsibleParty xlink:title="GCMD Landing Page">
<gmd:CI_ResponsibleParty uuid="1edb41d0-428a-11df-9879-0800200c9a66">
<gmd:organisationName>
<gco:CharacterString>NASA Goddard Space Flight Center, Earth Science Data and Information System</gco:CharacterString>
</gmd:organisationName>
<gmd:contactInfo>
<gmd:CI_Contact>
<gmd:onlineResource>
<gmd:CI_OnlineResource>
<gmd:linkage>
<gmd:URL>https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords</gmd:URL>
</gmd:linkage>
<gmd:name>
<gco:CharacterString>Global Change Master Directory (GCMD) Keywords</gco:CharacterString>
</gmd:name>
<gmd:description>
<gco:CharacterString>The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords.</gco:CharacterString>
</gmd:description>
<gmd:function>
<gmd:CI_OnLineFunctionCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#CI_OnLineFunctionCode" codeListValue="information">information</gmd:CI_OnLineFunctionCode>
</gmd:function>
</gmd:CI_OnlineResource>
</gmd:onlineResource>
</gmd:CI_Contact>
</gmd:contactInfo>
<gmd:role>
<gmd:CI_RoleCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#CI_RoleCode" codeListValue="custodian">custodian</gmd:CI_RoleCode>
</gmd:role>
</gmd:CI_ResponsibleParty>
</gmd:citedResponsibleParty>
</gmd:CI_Citation>
</gmd:thesaurusName>
</gmd:MD_Keywords>
</gmd:descriptiveKeywords>
<gmd:descriptiveKeywords>
<gmd:MD_Keywords>
<gmd:keyword>
<gco:CharacterString>ngs</gco:CharacterString>
</gmd:keyword>
<gmd:type>
<gmd:MD_KeywordTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode" codeListValue="project">project</gmd:MD_KeywordTypeCode>
</gmd:type>
<gmd:thesaurusName>
<gmd:CI_Citation>
<gmd:title>
<gco:CharacterString>InPort</gco:CharacterString>
</gmd:title>
<gmd:date gco:nilReason="inapplicable" />
</gmd:CI_Citation>
</gmd:thesaurusName>
</gmd:MD_Keywords>
</gmd:descriptiveKeywords>
<gmd:resourceConstraints>
<gmd:MD_LegalConstraints>
<gmd:useConstraints>
<gmd:MD_RestrictionCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#gmd:MD_RestrictionCode" codeListValue="otherRestrictions">otherRestrictions</gmd:MD_RestrictionCode>
</gmd:useConstraints>
<gmd:otherConstraints>
<gco:CharacterString>Cite As: National Geodetic Survey, [Date of Access]: National Geospatial Data Asset (NGDA) Continuously Operating Reference Stations (CORS) [Data Date Range], https://www.fisheries.noaa.gov/inport/item/39662.</gco:CharacterString>
</gmd:otherConstraints>
</gmd:MD_LegalConstraints>
</gmd:resourceConstraints>
<gmd:resourceConstraints>
<gmd:MD_Constraints>
<gmd:useLimitation>
<gco:CharacterString>NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose.</gco:CharacterString>
</gmd:useLimitation>
</gmd:MD_Constraints>
</gmd:resourceConstraints>
<gmd:resourceConstraints>
<gmd:MD_LegalConstraints>
<gmd:accessConstraints>
<gmd:MD_RestrictionCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#gmd:MD_RestrictionCode" codeListValue="otherRestrictions">otherRestrictions</gmd:MD_RestrictionCode>
</gmd:accessConstraints>
<gmd:useConstraints>
<gmd:MD_RestrictionCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#gmd:MD_RestrictionCode" codeListValue="otherRestrictions">otherRestrictions</gmd:MD_RestrictionCode>
</gmd:useConstraints>
<gmd:otherConstraints>
<gco:CharacterString>Access Constraints: None | Use Constraints: 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. | Distribution Liability: Use at your own risk</gco:CharacterString>
</gmd:otherConstraints>
</gmd:MD_LegalConstraints>
</gmd:resourceConstraints>
<gmd:aggregationInfo>
<gmd:MD_AggregateInformation>
<gmd:aggregateDataSetName>
<gmd:CI_Citation>
<gmd:title>
<gco:CharacterString>NOAA Data Management Plan (DMP)</gco:CharacterString>
</gmd:title>
<gmd:date gco:nilReason="unknown" />
<gmd:identifier>
<gmd:MD_Identifier>
<gmd:authority>
<gmd:CI_Citation>
<gmd:title>
<gco:CharacterString>NOAA/NMFS/EDM</gco:CharacterString>
</gmd:title>
<gmd:date gco:nilReason="inapplicable" />
</gmd:CI_Citation>
</gmd:authority>
<gmd:code>
<gco:CharacterString>39662</gco:CharacterString>
</gmd:code>
</gmd:MD_Identifier>
</gmd:identifier>
<gmd:citedResponsibleParty>
<gmd:CI_ResponsibleParty>
<gmd:organisationName>
<gco:CharacterString>National Oceanic and Atmospheric Adminstration (NOAA)</gco:CharacterString>
</gmd:organisationName>
<gmd:contactInfo>
<gmd:CI_Contact>
<gmd:onlineResource>
<gmd:CI_OnlineResource>
<gmd:linkage>
<gmd:URL>https://www.fisheries.noaa.gov/inportserve/waf/noaa/nos/ngs/dmp/pdf/39662.pdf</gmd:URL>
</gmd:linkage>
<gmd:protocol>
<gco:CharacterString>WWW:LINK-1.0-http--link</gco:CharacterString>
</gmd:protocol>
<gmd:name>
<gco:CharacterString>NOAA Data Management Plan (DMP)</gco:CharacterString>
</gmd:name>
<gmd:description>
<gco:CharacterString>NOAA Data Management Plan for this record on InPort.</gco:CharacterString>
</gmd:description>
<gmd:function>
<gmd:CI_OnLineFunctionCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_OnLineFunctionCode" codeListValue="information">information</gmd:CI_OnLineFunctionCode>
</gmd:function>
</gmd:CI_OnlineResource>
</gmd:onlineResource>
</gmd:CI_Contact>
</gmd:contactInfo>
<gmd:role>
<gmd:CI_RoleCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#CI_RoleCode" codeListValue="custodian">custodian</gmd:CI_RoleCode>
</gmd:role>
</gmd:CI_ResponsibleParty>
</gmd:citedResponsibleParty>
</gmd:CI_Citation>
</gmd:aggregateDataSetName>
<gmd:associationType>
<gmd:DS_AssociationTypeCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#DS_AssociationTypeCode" codeListValue="crossReference">crossReference</gmd:DS_AssociationTypeCode>
</gmd:associationType>
</gmd:MD_AggregateInformation>
</gmd:aggregationInfo>
<gmd:spatialRepresentationType>
<gmd:MD_SpatialRepresentationTypeCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#gmd:MD_SpatialRepresentationTypeCode" codeListValue="vector">vector</gmd:MD_SpatialRepresentationTypeCode>
</gmd:spatialRepresentationType>
<gmd:language>
<gco:CharacterString>eng; US</gco:CharacterString>
</gmd:language>
<gmd:topicCategory>
<gmd:MD_TopicCategoryCode>geoscientificInformation</gmd:MD_TopicCategoryCode>
</gmd:topicCategory>
<gmd:topicCategory>
<gmd:MD_TopicCategoryCode>location</gmd:MD_TopicCategoryCode>
</gmd:topicCategory>
<gmd:environmentDescription>
<gco:CharacterString>The GPS or 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 (where available), 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 the rest have a delay of 24 hours.</gco:CharacterString>
</gmd:environmentDescription>
<gmd:extent>
<gmd:EX_Extent>
<gmd:geographicElement>
<gmd:EX_GeographicBoundingBox>
<gmd:westBoundLongitude>
<gco:Decimal>-180</gco:Decimal>
</gmd:westBoundLongitude>
<gmd:eastBoundLongitude>
<gco:Decimal>180</gco:Decimal>
</gmd:eastBoundLongitude>
<gmd:southBoundLatitude>
<gco:Decimal>-90</gco:Decimal>
</gmd:southBoundLatitude>
<gmd:northBoundLatitude>
<gco:Decimal>90</gco:Decimal>
</gmd:northBoundLatitude>
</gmd:EX_GeographicBoundingBox>
</gmd:geographicElement>
<gmd:temporalElement>
<gmd:EX_TemporalExtent>
<gmd:extent>
<gml:TimePeriod gml:id="boundingTemporalExtent-1-1">
<gml:description>| Currentness: Ground Condition</gml:description>
<gml:beginPosition>1994-04-21</gml:beginPosition>
<gml:endPosition indeterminatePosition="now" />
</gml:TimePeriod>
</gmd:extent>
</gmd:EX_TemporalExtent>
</gmd:temporalElement>
</gmd:EX_Extent>
</gmd:extent>
</gmd:MD_DataIdentification>
</gmd:identificationInfo>
<gmd:contentInfo>
<gmd:MD_FeatureCatalogueDescription>
<gmd:complianceCode>
<gco:Boolean>false</gco:Boolean>
</gmd:complianceCode>
<gmd:language>
<gmd:LanguageCode codeList="http://www.loc.gov/standards/iso639-2/php/code_list.php" codeListValue="eng">eng</gmd:LanguageCode>
</gmd:language>
<gmd:includedWithDataset>
<gco:Boolean>false</gco:Boolean>
</gmd:includedWithDataset>
<gmd:featureCatalogueCitation>
<gmd:CI_Citation>
<gmd:title>
<gco:CharacterString>Information on the details of the data sets is available at: https://geodesy.noaa.gov/CORS/</gco:CharacterString>
</gmd:title>
<gmd:date gco:nilReason="unknown" />
<gmd:citedResponsibleParty>
<gmd:CI_ResponsibleParty>
<gmd:organisationName>
<gco:CharacterString>National Oceanic and Atmospheric Adminstration (NOAA)</gco:CharacterString>
</gmd:organisationName>
<gmd:contactInfo>
<gmd:CI_Contact>
<gmd:onlineResource>
<gmd:CI_OnlineResource>
<gmd:linkage>
<gmd:URL>https://geodesy.noaa.gov/CORS/</gmd:URL>
</gmd:linkage>
<gmd:protocol>
<gco:CharacterString>WWW:LINK-1.0-http--link</gco:CharacterString>
</gmd:protocol>
<gmd:name>
<gco:CharacterString>Entity Attribute Detail URL</gco:CharacterString>
</gmd:name>
<gmd:description>
<gco:CharacterString>Entity Attribute Detail URL</gco:CharacterString>
</gmd:description>
<gmd:function>
<gmd:CI_OnLineFunctionCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_OnLineFunctionCode" codeListValue="information">information</gmd:CI_OnLineFunctionCode>
</gmd:function>
</gmd:CI_OnlineResource>
</gmd:onlineResource>
</gmd:CI_Contact>
</gmd:contactInfo>
<gmd:role>
<gmd:CI_RoleCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#CI_RoleCode" codeListValue="custodian">custodian</gmd:CI_RoleCode>
</gmd:role>
</gmd:CI_ResponsibleParty>
</gmd:citedResponsibleParty>
</gmd:CI_Citation>
</gmd:featureCatalogueCitation>
</gmd:MD_FeatureCatalogueDescription>
</gmd:contentInfo>
<gmd:distributionInfo>
<gmd:MD_Distribution>
<gmd:distributionFormat>
<gmd:MD_Format>
<gmd:name>
<gco:CharacterString>Multiple formats</gco:CharacterString>
</gmd:name>
<gmd:version gco:nilReason="unknown" />
<gmd:fileDecompressionTechnique>
<gco:CharacterString>GZIP</gco:CharacterString>
</gmd:fileDecompressionTechnique>
</gmd:MD_Format>
</gmd:distributionFormat>
<gmd:distributor>
<gmd:MD_Distributor>
<gmd:distributorContact>
<gmd:CI_ResponsibleParty>
<gmd:organisationName>
<gco:CharacterString>NGS Communications and Outreach Branch</gco:CharacterString>
</gmd:organisationName>
<gmd:contactInfo>
<gmd:CI_Contact>
<gmd:phone>
<gmd:CI_Telephone>
<gmd:voice>
<gco:CharacterString>(301) 713-3242</gco:CharacterString>
</gmd:voice>
<gmd:facsimile>
<gco:CharacterString>(301) 713-4172</gco:CharacterString>
</gmd:facsimile>
</gmd:CI_Telephone>
</gmd:phone>
<gmd:address>
<gmd:CI_Address>
<gmd:electronicMailAddress>
<gco:CharacterString>ngs.infocenter@noaa.gov</gco:CharacterString>
</gmd:electronicMailAddress>
</gmd:CI_Address>
</gmd:address>
<gmd:contactInstructions>
<gco:CharacterString>Email or call</gco:CharacterString>
</gmd:contactInstructions>
</gmd:CI_Contact>
</gmd:contactInfo>
<gmd:role>
<gmd:CI_RoleCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#gmd:CI_RoleCode" codeListValue="distributor">distributor</gmd:CI_RoleCode>
</gmd:role>
</gmd:CI_ResponsibleParty>
</gmd:distributorContact>
</gmd:MD_Distributor>
</gmd:distributor>
<gmd:transferOptions>
<gmd:MD_DigitalTransferOptions>
<gmd:onLine>
<gmd:CI_OnlineResource>
<gmd:linkage>
<gmd:URL>https://geodesy.noaa.gov/corsdata/</gmd:URL>
</gmd:linkage>
<gmd:protocol>
<gco:CharacterString>WWW:LINK-1.0-http--link</gco:CharacterString>
</gmd:protocol>
<gmd:name>
<gco:CharacterString>NCN data web server</gco:CharacterString>
</gmd:name>
<gmd:description>
<gco:CharacterString>Data download</gco:CharacterString>
</gmd:description>
<gmd:function>
<gmd:CI_OnLineFunctionCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_OnLineFunctionCode" codeListValue="download">download</gmd:CI_OnLineFunctionCode>
</gmd:function>
</gmd:CI_OnlineResource>
</gmd:onLine>
<gmd:onLine>
<gmd:CI_OnlineResource>
<gmd:linkage>
<gmd:URL>https://geodesy.noaa.gov/UFCORS/</gmd:URL>
</gmd:linkage>
<gmd:protocol>
<gco:CharacterString>WWW:LINK-1.0-http--link</gco:CharacterString>
</gmd:protocol>
<gmd:name>
<gco:CharacterString>NCN UFCORS</gco:CharacterString>
</gmd:name>
<gmd:description>
<gco:CharacterString>User-Friendly NCN data download page</gco:CharacterString>
</gmd:description>
<gmd:function>
<gmd:CI_OnLineFunctionCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_OnLineFunctionCode" codeListValue="download">download</gmd:CI_OnLineFunctionCode>
</gmd:function>
</gmd:CI_OnlineResource>
</gmd:onLine>
</gmd:MD_DigitalTransferOptions>
</gmd:transferOptions>
</gmd:MD_Distribution>
</gmd:distributionInfo>
<gmd:dataQualityInfo>
<gmd:DQ_DataQuality>
<gmd:scope>
<gmd:DQ_Scope>
<gmd:level>
<gmd:MD_ScopeCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#MD_ScopeCode" codeListValue="dataset">dataset</gmd:MD_ScopeCode>
</gmd:level>
</gmd:DQ_Scope>
</gmd:scope>
<gmd:report>
<gmd:DQ_NonQuantitativeAttributeAccuracy>
<gmd:nameOfMeasure>
<gco:CharacterString>Representativeness</gco:CharacterString>
</gmd:nameOfMeasure>
<gmd:evaluationMethodDescription>
<gco:CharacterString>Receiver and Antenna is at least dual frequency, receiving L1 and L2 signals.
Receiver tracks at least ten satellites above 0 degrees.
Receiver provides L1 and L2 full wavelength carrier phase.
Receiver must have be accepted as suitable for inclusion into International GNSS Service or IGS network
Antenna code, antenna model + radome, must be permitted by NGS for inclusion into the NCN.</gco:CharacterString>
</gmd:evaluationMethodDescription>
<gmd:result gco:nilReason="inapplicable" />
</gmd:DQ_NonQuantitativeAttributeAccuracy>
</gmd:report>
<gmd:report>
<gmd:DQ_QuantitativeAttributeAccuracy>
<gmd:nameOfMeasure>
<gco:CharacterString>Accuracy</gco:CharacterString>
</gmd:nameOfMeasure>
<gmd:evaluationMethodDescription>
<gco:CharacterString>The carrier phase observations are accurate to a few centimeters, once biases have been removed.
For further information, see https://geodesy.noaa.gov/CORS/data.shtml</gco:CharacterString>
</gmd:evaluationMethodDescription>
<gmd:result gco:nilReason="inapplicable" />
</gmd:DQ_QuantitativeAttributeAccuracy>
</gmd:report>
<gmd:report>
<gmd:DQ_AbsoluteExternalPositionalAccuracy>
<gmd:nameOfMeasure>
<gco:CharacterString>Horizontal Positional Accuracy</gco:CharacterString>
</gmd:nameOfMeasure>
<gmd:result>
<gmd:DQ_QuantitativeResult>
<gmd:valueUnit>
<gml:BaseUnit gml:id="ID001">
<gml:identifier codeSpace="http://urn.opengis.net/">urn:ogc:def:uom:OGC::m</gml:identifier>
<gml:name>meter</gml:name>
<gml:unitsSystem xlink:href="http://www.bipm.fr/en/si/"/>
</gml:BaseUnit>
</gmd:valueUnit>
<gmd:value>
<gco:Record>0.02</gco:Record>
</gmd:value>
</gmd:DQ_QuantitativeResult>
</gmd:result>
</gmd:DQ_AbsoluteExternalPositionalAccuracy>
</gmd:report>
<gmd:report>
<gmd:DQ_AbsoluteExternalPositionalAccuracy>
<gmd:nameOfMeasure>
<gco:CharacterString>Vertical Positional Accuracy</gco:CharacterString>
</gmd:nameOfMeasure>
<gmd:result>
<gmd:DQ_QuantitativeResult>
<gmd:valueUnit>
<gml:BaseUnit gml:id="ID002">
<gml:identifier codeSpace="http://urn.opengis.net/">urn:ogc:def:uom:OGC::m</gml:identifier>
<gml:name>meter</gml:name>
<gml:unitsSystem xlink:href="http://www.bipm.fr/en/si/"/>
</gml:BaseUnit>
</gmd:valueUnit>
<gmd:value>
<gco:Record>0.04</gco:Record>
</gmd:value>
</gmd:DQ_QuantitativeResult>
</gmd:result>
</gmd:DQ_AbsoluteExternalPositionalAccuracy>
</gmd:report>
<gmd:report>
<gmd:DQ_ThematicClassificationCorrectness>
<gmd:nameOfMeasure>
<gco:CharacterString>Bias</gco:CharacterString>
</gmd:nameOfMeasure>
<gmd:evaluationMethodDescription>
<gco:CharacterString>The carrier phase observations are accurate to a few centimeters, once biases have been removed.
For further information, see https://geodesy.noaa.gov/CORS/data.shtml</gco:CharacterString>
</gmd:evaluationMethodDescription>
<gmd:result gco:nilReason="inapplicable" />
</gmd:DQ_ThematicClassificationCorrectness>
</gmd:report>
<gmd:report>
<gmd:DQ_CompletenessCommission>
<gmd:nameOfMeasure>
<gco:CharacterString>Completeness Report</gco:CharacterString>
</gmd:nameOfMeasure>
<gmd:evaluationMethodDescription>
<gco:CharacterString>The National Geodetic Survey, or NGS, publishes coordinates for NCN in several reference frames. This includes the current global reference frame from the International GNSS Service, or IGS, and with respect to the National Spatial Reference System, NSRS, realizations of the North American Datum of 1983, NAD 83, as defined by NGS. Reference frames are updated periodically as according to policy: http://geodesy.noaa.gov/INFO/Policy/files/042011_CORS_Coordinate_Policy.pdf</gco:CharacterString>
</gmd:evaluationMethodDescription>
<gmd:result gco:nilReason="missing" />
</gmd:DQ_CompletenessCommission>
</gmd:report>
<gmd:report>
<gmd:DQ_ConceptualConsistency>
<gmd:nameOfMeasure>
<gco:CharacterString>Conceptual Consistency</gco:CharacterString>
</gmd:nameOfMeasure>
<gmd:evaluationMethodDescription>
<gco:CharacterString>To become part of the NOAA CORS Network (NCN), each station must meet NGS' station criteria standards and maintain its integrity. Data is quality controlled by NGS before it is distributed to the public. In addition, NGS publishes position and velocity values for each CORS in both the global reference frame and in the National Spatial Reference System. More information can be found at https://geodesy.noaa.gov/PUBS_LIB/CORS_guidelines.pdf</gco:CharacterString>
</gmd:evaluationMethodDescription>
<gmd:result gco:nilReason="inapplicable" />
</gmd:DQ_ConceptualConsistency>
</gmd:report>
<gmd:lineage>
<gmd:LI_Lineage>
<gmd:statement>
<gco:CharacterString>NCN data is processed at an hourly or daily cadence, dependent a particular stations' retrieval frequency. Hourly data is deleted one day after daily file is created.</gco:CharacterString>
</gmd:statement>
<gmd:processStep>
<gmd:LI_ProcessStep>
<gmd:description>
<gco:CharacterString>GPS or GNSS data that are received in either binary or Receiver INdepedent EXchange (RINEX) format, and are processed by NGS into a compressed daily RINEX formatted file. Other files made available include navigation/ephemeris, station logs, NGS coordinates and may include other observations, such as meteorological files.</gco:CharacterString>
</gmd:description>
</gmd:LI_ProcessStep>
</gmd:processStep>
<gmd:processStep>
<gmd:LI_ProcessStep>
<gmd:description>
<gco:CharacterString>RINEX data is posted online at the at-sampling rate for a period of 30 days</gco:CharacterString>
</gmd:description>
</gmd:LI_ProcessStep>
</gmd:processStep>
<gmd:processStep>
<gmd:LI_ProcessStep>
<gmd:description>
<gco:CharacterString>At-sampling daily RINEX data is concurrently staged at NCEI for archive.</gco:CharacterString>
</gmd:description>
</gmd:LI_ProcessStep>
</gmd:processStep>
<gmd:processStep>
<gmd:LI_ProcessStep>
<gmd:description>
<gco:CharacterString>After 30 days, NCN at-sampling daily RINEX data (when available) is archived.</gco:CharacterString>
</gmd:description>
</gmd:LI_ProcessStep>
</gmd:processStep>
<gmd:processStep>
<gmd:LI_ProcessStep>
<gmd:description>
<gco:CharacterString>After 30 days, NGS online daily RINEX data are decimated to a 30-second sampling rate.</gco:CharacterString>
</gmd:description>
</gmd:LI_ProcessStep>
</gmd:processStep>
<gmd:source>
<gmd:LI_Source>
<gmd:description>
<gco:CharacterString>Source Contribution: The CORS network is a multi-purpose, multi-agency cooperative endeavor, combining the efforts of hundreds of government, academic, and private organizations. The stations are independently owned and operated. Each agency shares their GNSS/GPS carrier phase and code range measurements and station metadata with NGS, which are analyzed and distributed free of charge.</gco:CharacterString>
</gmd:description>
<gmd:sourceCitation>
<gmd:CI_Citation>
<gmd:title>
<gco:CharacterString>NOAA CORS Network (NCN)</gco:CharacterString>
</gmd:title>
<gmd:date>
<gmd:CI_Date>
<gmd:date>
<gco:Date>2021-09-14</gco:Date>
</gmd:date>
<gmd:dateType>
<gmd:CI_DateTypeCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_DateTypeCode" codeListValue="publication">publication</gmd:CI_DateTypeCode>
</gmd:dateType>
</gmd:CI_Date>
</gmd:date>
<gmd:citedResponsibleParty>
<gmd:CI_ResponsibleParty>
<gmd:organisationName>
<gco:CharacterString>NGS Communications and Outreach Branch</gco:CharacterString>
</gmd:organisationName>
<gmd:contactInfo>
<gmd:CI_Contact>
<gmd:onlineResource>
<gmd:CI_OnlineResource>
<gmd:linkage>
<gmd:URL>https://geodesy.noaa.gov/CORS/index.shtml</gmd:URL>
</gmd:linkage>
<gmd:protocol>
<gco:CharacterString>WWW:LINK-1.0-http--link</gco:CharacterString>
</gmd:protocol>
<gmd:name>
<gco:CharacterString>NOAA CORS Network</gco:CharacterString>
</gmd:name>
<gmd:description>
<gco:CharacterString>The NOAA Continuously Operating Reference Stations (CORS) Network (NCN), managed by NOAA/National Geodetic Survey, provide Global Navigation Satellite System (GNSS) data, supporting three dimensional positioning, meteorology, space weather, and geophysical applications throughout the United States.</gco:CharacterString>
</gmd:description>
<gmd:function>
<gmd:CI_OnLineFunctionCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_OnLineFunctionCode" codeListValue="information">information</gmd:CI_OnLineFunctionCode>
</gmd:function>
</gmd:CI_OnlineResource>
</gmd:onlineResource>
</gmd:CI_Contact>
</gmd:contactInfo>
<gmd:role>
<gmd:CI_RoleCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#gmd:CI_RoleCode" codeListValue="originator">originator</gmd:CI_RoleCode>
</gmd:role>
</gmd:CI_ResponsibleParty>
</gmd:citedResponsibleParty>
</gmd:CI_Citation>
</gmd:sourceCitation>
<gmd:sourceExtent>
<gmd:EX_Extent>
<gmd:temporalElement>
<gmd:EX_TemporalExtent>
<gmd:extent>
<gml:TimePeriod gml:id="sourceExtent-1085929">
<gml:beginPosition>1994-04-21</gml:beginPosition>
<gml:endPosition indeterminatePosition="now" />
</gml:TimePeriod>
</gmd:extent>
</gmd:EX_TemporalExtent>
</gmd:temporalElement>
</gmd:EX_Extent>
</gmd:sourceExtent>
</gmd:LI_Source>
</gmd:source>
</gmd:LI_Lineage>
</gmd:lineage>
</gmd:DQ_DataQuality>
</gmd:dataQualityInfo>
<gmd:metadataConstraints>
<gmd:MD_LegalConstraints>
<gmd:accessConstraints>
<gmd:MD_RestrictionCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#gmd:MD_RestrictionCode" codeListValue="otherRestrictions">otherRestrictions</gmd:MD_RestrictionCode>
</gmd:accessConstraints>
<gmd:useConstraints>
<gmd:MD_RestrictionCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#gmd:MD_RestrictionCode" codeListValue="otherRestrictions">otherRestrictions</gmd:MD_RestrictionCode>
</gmd:useConstraints>
<gmd:otherConstraints>
<gco:CharacterString>Access Constraints: None | Use Constraints: None</gco:CharacterString>
</gmd:otherConstraints>
</gmd:MD_LegalConstraints>
</gmd:metadataConstraints>
<gmi:acquisitionInformation>
<gmi:MI_AcquisitionInformation>
<gmi:instrument>
<gmi:MI_Instrument>
<gmi:identifier>
<gmd:MD_Identifier>
<gmd:code>
<gco:CharacterString>GPS (Global Positioning System)</gco:CharacterString>
</gmd:code>
</gmd:MD_Identifier>
</gmi:identifier>
<gmi:type>
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<gco:CharacterString>The Global Positioning System (GPS) is a U.S.-owned utility that provides users with positioning, navigation, and timing (PNT) services. This system consists of three segments: the space segment, the control segment, and the user segment. The U.S. Air Force develops, maintains, and operates the space and control segments.</gco:CharacterString>
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</gmi:MI_Instrument>
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<gmi:platform>
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<gco:CharacterString>Global Positioning System (GPS)</gco:CharacterString>
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<gco:CharacterString>The Global Positioning System (GPS) is a U.S.-owned utility that provides users with positioning, navigation, and timing (PNT) services. This system consists of three segments: the space segment, the control segment, and the user segment. The U.S. Air Force develops, maintains, and operates the space and control segments.</gco:CharacterString>
</gmi:description>
<gmi:instrument>
<gmi:MI_Instrument>
<gmi:identifier>
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<gco:CharacterString>GPS (Global Positioning System)</gco:CharacterString>
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<gco:CharacterString>GPS (Global Positioning System)</gco:CharacterString>
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<gco:CharacterString>The Global Positioning System (GPS) is a U.S.-owned utility that provides users with positioning, navigation, and timing (PNT) services. This system consists of three segments: the space segment, the control segment, and the user segment. The U.S. Air Force develops, maintains, and operates the space and control segments.</gco:CharacterString>
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</gmi:MI_AcquisitionInformation>
</gmi:acquisitionInformation>
</gmi:MI_Metadata>