<geo:GeodesyML xmlns:gco="http://www.isotc211.org/2005/gco" xmlns:geo="urn:xml-gov-au:icsm:egeodesy:0.5" xmlns:gmd="http://www.isotc211.org/2005/gmd" xmlns:gml="http://www.opengis.net/gml/3.2" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" gml:id="OP7100FRA">
  <geo:siteLog gml:id="OP7100FRA_20251209">
    <geo:formInformation>
      <geo:FormInformation gml:id="form-info">
        <geo:preparedBy>Michel Abgrall</geo:preparedBy>
        <geo:datePrepared>2025-12-09</geo:datePrepared>
        <geo:reportType>UPDATE</geo:reportType>
      </geo:FormInformation>
    </geo:formInformation>
    <geo:siteIdentification>
      <geo:SiteIdentification gml:id="site-identification">
        <geo:siteName>Observatoire de Paris</geo:siteName>
        <geo:fourCharacterID>OP71</geo:fourCharacterID>
        <geo:monumentInscription>None</geo:monumentInscription>
        <geo:iersDOMESNumber>10001S007</geo:iersDOMESNumber>
        <geo:cdpNumber>None</geo:cdpNumber>
        <geo:monumentDescription codeSpace="urn:ga-gov-au:monument-description-type">Concrete balk and metallic mast</geo:monumentDescription>
        <geo:heightOfTheMonument>5.0</geo:heightOfTheMonument>
        <geo:monumentFoundation>ROOF</geo:monumentFoundation>
        <geo:foundationDepth>14.73</geo:foundationDepth>
        <geo:dateInstalled>2016-10-18T00:00:00Z</geo:dateInstalled>
      </geo:SiteIdentification>
    </geo:siteIdentification>
    <geo:siteLocation>
      <geo:SiteLocation gml:id="site-location">
        <geo:city>Paris</geo:city>
        <geo:state>Ile-de-France</geo:state>
        <geo:countryCodeISO codeList="http://xml.gov.au/icsm/geodesyml/codelists/country-codes-codelist.xml#GeodesyML_CountryCode" codeListValue="AUS" codeSpace="urn:xml-gov-au:icsm:egeodesy:0.5">France</geo:countryCodeISO>
        <geo:tectonicPlate codeSpace="urn:ga-gov-au:plate-type">EURASIAN</geo:tectonicPlate>
        <geo:approximatePositionITRF>
          <geo:cartesianPosition>
            <gml:Point gml:id="itrf_cartesian">
              <gml:pos srsName="EPSG:7789">4202779.735 171370.766 4778660.65</gml:pos>
            </gml:Point>
          </geo:cartesianPosition>
          <geo:geodeticPosition>
            <gml:Point gml:id="itrf_geodetic">
              <gml:pos srsName="EPSG:7912">48.8359058611 2.3349749167 </gml:pos>
            </gml:Point>
          </geo:geodeticPosition>
        </geo:approximatePositionITRF>
        <geo:notes/>
      </geo:SiteLocation>
    </geo:siteLocation>
    <geo:gnssReceiver>
      <geo:GnssReceiver gml:id="gnss-receiver-1">
        <geo:manufacturerSerialNumber>3009606</geo:manufacturerSerialNumber>
        <geo:igsModelCode codeList="http://xml.gov.au/icsm/geodesyml/codelists/antenna-receiver-codelists.xml#GeodesyML_GNSSReceiverTypeCode" codeListValue="SEPT POLARX4TR" codeSpace="urn:xml-gov-au:icsm:egeodesy:0.5">SEPT POLARX4TR</geo:igsModelCode>
        <geo:satelliteSystem>GPS+GLO+GAL+BDS+SBAS</geo:satelliteSystem>
        <geo:firmwareVersion>2.9.6</geo:firmwareVersion>
        <geo:elevationCutoffSetting>5</geo:elevationCutoffSetting>
        <geo:dateInstalled>2016-10-18T00:00:00Z</geo:dateInstalled>
        <geo:dateRemoved>2018-12-05T23:59:00Z</geo:dateRemoved>
        <geo:temperatureStabilization>2.0</geo:temperatureStabilization>
      </geo:GnssReceiver>
      <geo:dateInserted>2016-10-18T00:00:00Z</geo:dateInserted>
    </geo:gnssReceiver>
    <geo:gnssReceiver>
      <geo:GnssReceiver gml:id="gnss-receiver-2">
        <geo:manufacturerSerialNumber>3009606</geo:manufacturerSerialNumber>
        <geo:igsModelCode codeList="http://xml.gov.au/icsm/geodesyml/codelists/antenna-receiver-codelists.xml#GeodesyML_GNSSReceiverTypeCode" codeListValue="SEPT POLARX4TR" codeSpace="urn:xml-gov-au:icsm:egeodesy:0.5">SEPT POLARX4TR</geo:igsModelCode>
        <geo:satelliteSystem>GPS+GLO+GAL+BDS+SBAS</geo:satelliteSystem>
        <geo:firmwareVersion>2.9.6</geo:firmwareVersion>
        <geo:elevationCutoffSetting>5</geo:elevationCutoffSetting>
        <geo:dateInstalled>2019-12-01T00:00:00Z</geo:dateInstalled>
        <geo:dateRemoved>2022-11-26T23:59:00Z</geo:dateRemoved>
        <geo:temperatureStabilization>1.0</geo:temperatureStabilization>
      </geo:GnssReceiver>
      <geo:dateInserted>2019-12-01T00:00:00Z</geo:dateInserted>
    </geo:gnssReceiver>
    <geo:gnssReceiver>
      <geo:GnssReceiver gml:id="gnss-receiver-3">
        <geo:manufacturerSerialNumber>3083499</geo:manufacturerSerialNumber>
        <geo:igsModelCode codeList="http://xml.gov.au/icsm/geodesyml/codelists/antenna-receiver-codelists.xml#GeodesyML_GNSSReceiverTypeCode" codeListValue="SEPT POLARX5TR" codeSpace="urn:xml-gov-au:icsm:egeodesy:0.5">SEPT POLARX5TR</geo:igsModelCode>
        <geo:satelliteSystem>GPS+GLO+GAL+BDS+QZSS+IRNSS+SBAS</geo:satelliteSystem>
        <geo:firmwareVersion>5.5.0</geo:firmwareVersion>
        <geo:elevationCutoffSetting>5</geo:elevationCutoffSetting>
        <geo:dateInstalled>2022-11-27T00:00:00Z</geo:dateInstalled>
        <geo:dateRemoved/>
        <geo:temperatureStabilization>1.0</geo:temperatureStabilization>
      </geo:GnssReceiver>
      <geo:dateInserted>2022-11-27T00:00:00Z</geo:dateInserted>
    </geo:gnssReceiver>
    <geo:gnssAntenna>
      <geo:GnssAntenna gml:id="gnss-antenna-1">
        <geo:manufacturerSerialNumber>725498</geo:manufacturerSerialNumber>
        <geo:igsModelCode codeList="http://xml.gov.au/icsm/geodesyml/codelists/antenna-receiver-codelists.xml#GeodesyML_GNSSAntennaTypeCode" codeListValue="LEIAR25.R4 LEIT" codeSpace="urn:xml-gov-au:icsm:egeodesy:0.5">LEIAR25.R4      LEIT</geo:igsModelCode>
        <geo:antennaReferencePoint codeSpace="urn:ga-gov-au:antenna-reference-point-type">BPA</geo:antennaReferencePoint>
        <geo:marker-arpUpEcc.>0.0000</geo:marker-arpUpEcc.>
        <geo:marker-arpNorthEcc.>0.0000</geo:marker-arpNorthEcc.>
        <geo:marker-arpEastEcc.>0.0000</geo:marker-arpEastEcc.>
        <geo:alignmentFromTrueNorth>0</geo:alignmentFromTrueNorth>
        <geo:antennaRadomeType codeSpace="urn:igs-org:gnss-radome-model-code">LEIT</geo:antennaRadomeType>
        <geo:radomeSerialNumber>Unknown</geo:radomeSerialNumber>
        <geo:antennaCableType>Andrew FSJ2P-50N</geo:antennaCableType>
        <geo:antennaCableLength>25</geo:antennaCableLength>
        <geo:dateInstalled>2016-10-18T00:00:00Z</geo:dateInstalled>
        <geo:dateRemoved/>
      </geo:GnssAntenna>
      <geo:dateInserted>2016-10-18T00:00:00Z</geo:dateInserted>
    </geo:gnssAntenna>
    <geo:frequencyStandard>
      <geo:FrequencyStandard gml:id="frequency-standard-1">
        <geo:standardType codeSpace="urn:ga-gov-au:frequency-standard-type">EXTERNAL UTC(OP)</geo:standardType>
        <geo:inputFrequency>10.0</geo:inputFrequency>
        <gml:validTime>
          <gml:TimePeriod gml:id="frequency-standard-1-time-period-1">
            <gml:beginPosition>2016-10-18</gml:beginPosition>
            <gml:endPosition>2022-11-26</gml:endPosition>
          </gml:TimePeriod>
        </gml:validTime>
        <geo:notes>Real-time prediction of UTC in Observatoire
de Paris (OP) based on an H-maser signal
steered on Primary Frequency Standards.
The required 1 PPS signal is coming from the
output 7 of the TimeTech Pulse Distribution
Unit 0174 labelled 'UTCOP'.
The required 10 MHz signal is coming from the
output A3 of the TimeTech Frequency Distribution
Amplifier 88 labelled '10MHzUTCOP'.

** 2023-03-31 SLM 2.0 altered field 
input_frequency from its original value: 1 PPS 
and 10</geo:notes>
      </geo:FrequencyStandard>
      <geo:dateInserted>2016-10-18T00:00:00Z</geo:dateInserted>
    </geo:frequencyStandard>
    <geo:frequencyStandard>
      <geo:FrequencyStandard gml:id="frequency-standard-2">
        <geo:standardType codeSpace="urn:ga-gov-au:frequency-standard-type">EXTERNAL UTC(OP)</geo:standardType>
        <geo:inputFrequency>10.0</geo:inputFrequency>
        <gml:validTime>
          <gml:TimePeriod gml:id="frequency-standard-2-time-period-1">
            <gml:beginPosition>2022-11-27</gml:beginPosition>
            <gml:endPosition/>
          </gml:TimePeriod>
        </gml:validTime>
        <geo:notes>Real-time prediction of UTC in Observatoire
de Paris (OP) based on an H-maser signal
steered on Primary Frequency Standards.
The required 1 PPS signal is coming from the
output 6 of the TimeTech Pulse Distribution
Unit 0174 labelled 'UTCOP'.
The required 10 MHz signal is coming from the
output B7 of the TimeTech Frequency Distribution
Amplifier 88 labelled '10MHzUTCOP'.

** 2023-03-31 SLM 2.0 altered field 
input_frequency from its original value: 1 PPS 
and 10</geo:notes>
      </geo:FrequencyStandard>
      <geo:dateInserted>2022-11-27T00:00:00Z</geo:dateInserted>
    </geo:frequencyStandard>
    <geo:collocationInformation>
      <geo:CollocationInformation gml:id="collocation-information-1">
        <geo:instrumentationType codeSpace="urn:ga-gov-au:collocation-information-type">GNSS receiver</geo:instrumentationType>
        <geo:status codeSpace="urn:ga-gov-au:collocation-information-type">PERMANENT</geo:status>
        <gml:validTime>
          <gml:TimePeriod gml:id="collocation-information-1-time-period-1">
            <gml:beginPosition>2016-10-18</gml:beginPosition>
            <gml:endPosition>2022-11-26</gml:endPosition>
          </gml:TimePeriod>
        </gml:validTime>
        <geo:notes>SEPT POLARX3TR 'OPM6'</geo:notes>
      </geo:CollocationInformation>
      <geo:dateInserted>2016-10-18T00:00:00Z</geo:dateInserted>
    </geo:collocationInformation>
    <geo:collocationInformation>
      <geo:CollocationInformation gml:id="collocation-information-2">
        <geo:instrumentationType codeSpace="urn:ga-gov-au:collocation-information-type">GNSS receiver</geo:instrumentationType>
        <geo:status codeSpace="urn:ga-gov-au:collocation-information-type">PERMANENT</geo:status>
        <gml:validTime>
          <gml:TimePeriod gml:id="collocation-information-2-time-period-1">
            <gml:beginPosition>2022-11-27</gml:beginPosition>
            <gml:endPosition/>
          </gml:TimePeriod>
        </gml:validTime>
        <geo:notes>SEPT POLARX4TR 'OP31&#8217;</geo:notes>
      </geo:CollocationInformation>
      <geo:dateInserted>2022-11-27T00:00:00Z</geo:dateInserted>
    </geo:collocationInformation>
    <geo:signalObstruction>
      <geo:SignalObstruction gml:id="signal-obstruction-1">
        <geo:possibleProblemSource>BUILDINGS</geo:possibleProblemSource>
        <gml:validTime>
          <gml:TimePeriod gml:id="signal-obstruction-1-time-period-1">
            <gml:beginPosition>2016-10-18</gml:beginPosition>
            <gml:endPosition/>
          </gml:TimePeriod>
        </gml:validTime>
        <geo:notes>The horizon profile is clear above an elevation
of 5 degrees except between the azimuths 240
degrees 
E and 330 degrees E where the buildings' mask
can 
reach an elevation of 45 degrees with an
average value 
of 23 degrees</geo:notes>
      </geo:SignalObstruction>
      <geo:dateInserted>2016-10-18T00:00:00Z</geo:dateInserted>
    </geo:signalObstruction>
    <geo:siteContact gml:id="site-contact-2">
      <gmd:CI_ResponsibleParty>
        <gmd:individualName>
          <gco:CharacterString>Baptiste CHUPIN</gco:CharacterString>
        </gmd:individualName>
        <gmd:organisationName>
          <gco:CharacterString>Laboratoire Temps Espace, Observatoire de Paris, Universit&#233; PSL, CNRS, Sorbonne Universit&#233;, Universit&#233; de Lille, Laboratoire National de M&#233;trologie et d&#8217;Essais</gco:CharacterString>
        </gmd:organisationName>
        <gmd:contactInfo>
          <gmd:CI_Contact>
            <gmd:phone>
              <gmd:CI_Telephone>
                <gmd:voice>
                  <gco:CharacterString>+33(0)140512215</gco:CharacterString>
                </gmd:voice>
              </gmd:CI_Telephone>
            </gmd:phone>
            <gmd:address>
              <gmd:CI_Address>
                <gmd:deliveryPoint>
                  <gco:CharacterString>LTE
Observatoire de Paris
61 avenue de l'Observatoire
F-75014 Paris
France</gco:CharacterString>
                </gmd:deliveryPoint>
                <gmd:electronicMailAddress>
                  <gco:CharacterString>baptiste.chupin@obspm.fr</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#CI_RoleCode" codeListValue="pointOfContact"/>
        </gmd:role>
      </gmd:CI_ResponsibleParty>
    </geo:siteContact>
    <geo:siteMetadataCustodian gml:id="site-metadata-custodian">
      <gmd:CI_ResponsibleParty>
        <gmd:individualName>
          <gco:CharacterString>Michel ABGRALL</gco:CharacterString>
        </gmd:individualName>
        <gmd:organisationName>
          <gco:CharacterString>Laboratoire Temps Espace, Observatoire de Paris, Universit&#233; PSL, CNRS, Sorbonne Universit&#233;, Universit&#233; de Lille, Laboratoire National de M&#233;trologie et d&#8217;Essais</gco:CharacterString>
        </gmd:organisationName>
        <gmd:contactInfo>
          <gmd:CI_Contact>
            <gmd:phone>
              <gmd:CI_Telephone>
                <gmd:voice>
                  <gco:CharacterString>+33(0)140512011</gco:CharacterString>
                </gmd:voice>
              </gmd:CI_Telephone>
            </gmd:phone>
            <gmd:address>
              <gmd:CI_Address>
                <gmd:deliveryPoint>
                  <gco:CharacterString>LTE
Observatoire de Paris
61 avenue de l'Observatoire
F-75014 Paris
France</gco:CharacterString>
                </gmd:deliveryPoint>
                <gmd:electronicMailAddress>
                  <gco:CharacterString>michel.abgrall@obspm.fr</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#CI_RoleCode" codeListValue="pointOfContact"/>
        </gmd:role>
      </gmd:CI_ResponsibleParty>
    </geo:siteMetadataCustodian>
    <geo:moreInformation>
      <geo:MoreInformation gml:id="more-information">
        <geo:dataCenter>IGN</geo:dataCenter>
        <geo:dataCenter>BKG</geo:dataCenter>
        <geo:urlForMoreInformation/>
        <geo:siteMap/>
        <geo:siteDiagram/>
        <geo:horizonMask/>
        <geo:monumentDescription/>
        <geo:sitePictures/>
        <geo:antennaGraphicsWithDimensions/>
        <geo:insertTextGraphicFromAntenna>

LEIAR25.R4

                       +-------+                          &lt;--  0.1995
                      /         \
                +---+-------------+---+                   &lt;--  0.1606  TCR
                |                     |
             |---------------------------|
          |---------------------------------|
       |---------------------------------------|
    +---------------------------------------------+
    |                                             |
    |                                             |
  +-+---------------------------------------------+-+
  +-----------------+-------------+-----------------+     &lt;--  0.0320  BCR
                    |             |
                    |             |
                    +------x------+                       &lt;--  0.0000  BPA=ARP
                                                              (5/8" thread might
                                                               differ from BPA!)
  &lt;--                    0.3802                   --&gt;                  NOM=NRP



    </geo:insertTextGraphicFromAntenna>
        <geo:DOI codeSpace="urn:ga-gov-au:self.moreInformation-type">TODO</geo:DOI>
      </geo:MoreInformation>
    </geo:moreInformation>
    <geo:associatedDocument>
      <geo:Document gml:id="file-1182">
        <gml:name>OP7100FRA-20180530-E.jpg</gml:name>
        <geo:type>image</geo:type>
        <geo:createdDate>2018-05-30T17:58:58Z</geo:createdDate>
        <geo:receivedDate>2018-05-30T00:00:00Z</geo:receivedDate>
        <geo:body>
          <geo:fileReference xlink:href="https://network.igs.org/api/public/files/1182/"/>
        </geo:body>
      </geo:Document>
    </geo:associatedDocument>
    <geo:associatedDocument>
      <geo:Document gml:id="file-1184">
        <gml:name>OP7100FRA-20180530-N.jpg</gml:name>
        <geo:type>image</geo:type>
        <geo:createdDate>2018-05-30T15:18:37Z</geo:createdDate>
        <geo:receivedDate>2018-05-30T00:00:00Z</geo:receivedDate>
        <geo:body>
          <geo:fileReference xlink:href="https://network.igs.org/api/public/files/1184/"/>
        </geo:body>
      </geo:Document>
    </geo:associatedDocument>
    <geo:associatedDocument>
      <geo:Document gml:id="file-1186">
        <gml:name>OP7100FRA-20180530-NW.jpg</gml:name>
        <geo:type>image</geo:type>
        <geo:createdDate>2018-05-30T15:40:55Z</geo:createdDate>
        <geo:receivedDate>2018-05-30T00:00:00Z</geo:receivedDate>
        <geo:body>
          <geo:fileReference xlink:href="https://network.igs.org/api/public/files/1186/"/>
        </geo:body>
      </geo:Document>
    </geo:associatedDocument>
    <geo:associatedDocument>
      <geo:Document gml:id="file-1192">
        <gml:name>OP7100FRA-20180530-SE.jpg</gml:name>
        <geo:type>image</geo:type>
        <geo:createdDate>2018-05-30T15:17:23Z</geo:createdDate>
        <geo:receivedDate>2018-05-30T00:00:00Z</geo:receivedDate>
        <geo:body>
          <geo:fileReference xlink:href="https://network.igs.org/api/public/files/1192/"/>
        </geo:body>
      </geo:Document>
    </geo:associatedDocument>
    <geo:associatedDocument>
      <geo:Document gml:id="file-1194">
        <gml:name>OP7100FRA-20180530-W.jpg</gml:name>
        <geo:type>image</geo:type>
        <geo:createdDate>2018-05-30T15:19:27Z</geo:createdDate>
        <geo:receivedDate>2018-05-30T00:00:00Z</geo:receivedDate>
        <geo:body>
          <geo:fileReference xlink:href="https://network.igs.org/api/public/files/1194/"/>
        </geo:body>
      </geo:Document>
    </geo:associatedDocument>
  </geo:siteLog>
</geo:GeodesyML>
