<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="HUMG00VNM">
  <geo:siteLog gml:id="HUMG00VNM_20260129">
    <geo:formInformation>
      <geo:FormInformation gml:id="form-info">
        <geo:preparedBy>Markus Bradke</geo:preparedBy>
        <geo:datePrepared>2026-01-29</geo:datePrepared>
        <geo:reportType>UPDATE</geo:reportType>
      </geo:FormInformation>
    </geo:formInformation>
    <geo:siteIdentification>
      <geo:SiteIdentification gml:id="site-identification">
        <geo:siteName>Hanoi</geo:siteName>
        <geo:fourCharacterID>HUMG</geo:fourCharacterID>
        <geo:iersDOMESNumber>24301M002</geo:iersDOMESNumber>
        <geo:cdpNumber/>
        <geo:monumentDescription codeSpace="urn:ga-gov-au:monument-description-type">Pillar</geo:monumentDescription>
        <geo:heightOfTheMonument>2.94</geo:heightOfTheMonument>
        <geo:monumentFoundation>ROOF</geo:monumentFoundation>
        <geo:dateInstalled>2023-06-10T00:00:00Z</geo:dateInstalled>
      </geo:SiteIdentification>
    </geo:siteIdentification>
    <geo:siteLocation>
      <geo:SiteLocation gml:id="site-location">
        <geo:city>Hanoi</geo:city>
        <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">Viet Nam</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">-1618563.5164 5730001.8237 2278810.0966</gml:pos>
            </gml:Point>
          </geo:cartesianPosition>
          <geo:geodeticPosition>
            <gml:Point gml:id="itrf_geodetic">
              <gml:pos srsName="EPSG:7912">21.0717521013 105.7734857973 </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>02853</geo:manufacturerSerialNumber>
        <geo:igsModelCode codeList="http://xml.gov.au/icsm/geodesyml/codelists/antenna-receiver-codelists.xml#GeodesyML_GNSSReceiverTypeCode" codeListValue="JAVAD TRE_3 DELTA" codeSpace="urn:xml-gov-au:icsm:egeodesy:0.5">JAVAD TRE_3 DELTA</geo:igsModelCode>
        <geo:satelliteSystem>GPS+GLO+GAL</geo:satelliteSystem>
        <geo:firmwareVersion>4.2.00-211012</geo:firmwareVersion>
        <geo:elevationCutoffSetting>0</geo:elevationCutoffSetting>
        <geo:dateInstalled>2023-06-10T00:00:00Z</geo:dateInstalled>
        <geo:dateRemoved>2025-10-11T23:59:00Z</geo:dateRemoved>
        <geo:temperatureStabilization xsi:nil="true"/>
      </geo:GnssReceiver>
      <geo:dateInserted>2025-08-21T13:45:38Z</geo:dateInserted>
    </geo:gnssReceiver>
    <geo:gnssReceiver>
      <geo:GnssReceiver gml:id="gnss-receiver-2">
        <geo:manufacturerSerialNumber>5099777</geo:manufacturerSerialNumber>
        <geo:igsModelCode codeList="http://xml.gov.au/icsm/geodesyml/codelists/antenna-receiver-codelists.xml#GeodesyML_GNSSReceiverTypeCode" codeListValue="JAVAD TR_2S" codeSpace="urn:xml-gov-au:icsm:egeodesy:0.5">JAVAD TR_2S</geo:igsModelCode>
        <geo:satelliteSystem>GPS+GLO+GAL+BDS+QZSS+IRNSS+SBAS</geo:satelliteSystem>
        <geo:firmwareVersion>4.6.00-250628</geo:firmwareVersion>
        <geo:elevationCutoffSetting>0</geo:elevationCutoffSetting>
        <geo:dateInstalled>2026-01-23T00:00:00Z</geo:dateInstalled>
        <geo:dateRemoved/>
        <geo:temperatureStabilization xsi:nil="true"/>
      </geo:GnssReceiver>
      <geo:dateInserted>2026-01-29T09:27:17Z</geo:dateInserted>
    </geo:gnssReceiver>
    <geo:gnssAntenna>
      <geo:GnssAntenna gml:id="gnss-antenna-1">
        <geo:manufacturerSerialNumber>19087006</geo:manufacturerSerialNumber>
        <geo:igsModelCode codeList="http://xml.gov.au/icsm/geodesyml/codelists/antenna-receiver-codelists.xml#GeodesyML_GNSSAntennaTypeCode" codeListValue="LEIAR20 LEIM" codeSpace="urn:xml-gov-au:icsm:egeodesy:0.5">LEIAR20         LEIM</geo:igsModelCode>
        <geo:antennaReferencePoint codeSpace="urn:ga-gov-au:antenna-reference-point-type">BAM</geo:antennaReferencePoint>
        <geo:marker-arpUpEcc.>0.1000</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">LEIM</geo:antennaRadomeType>
        <geo:radomeSerialNumber/>
        <geo:antennaCableType/>
        <geo:antennaCableLength>30</geo:antennaCableLength>
        <geo:dateInstalled>2023-06-10T00:00:00Z</geo:dateInstalled>
        <geo:dateRemoved/>
      </geo:GnssAntenna>
      <geo:dateInserted>2025-08-21T13:45:37Z</geo:dateInserted>
    </geo:gnssAntenna>
    <geo:frequencyStandard>
      <geo:FrequencyStandard gml:id="frequency-standard-1">
        <geo:standardType codeSpace="urn:ga-gov-au:frequency-standard-type">INTERNAL</geo:standardType>
        <gml:validTime>
          <gml:TimePeriod gml:id="frequency-standard-1-time-period-1">
            <gml:beginPosition>2023-06-10</gml:beginPosition>
            <gml:endPosition/>
          </gml:TimePeriod>
        </gml:validTime>
        <geo:notes/>
      </geo:FrequencyStandard>
      <geo:dateInserted>2025-08-21T13:45:37Z</geo:dateInserted>
    </geo:frequencyStandard>
    <geo:humiditySensor>
      <geo:HumiditySensor gml:id="humidity-sensor-1">
        <geo:type codeSpace="urn:ga-gov-au:humidity-sensor-type">BME280</geo:type>
        <geo:manufacturer>Bosch</geo:manufacturer>
        <geo:serialNumber>BME280LC10007</geo:serialNumber>
        <geo:heightDiffToAntenna>-1.55</geo:heightDiffToAntenna>
        <geo:calibrationDate/>
        <gml:validTime>
          <gml:TimePeriod gml:id="humidity-sensor-1-time-period-1">
            <gml:beginPosition>2023-06-16</gml:beginPosition>
            <gml:endPosition>2025-10-11</gml:endPosition>
          </gml:TimePeriod>
        </gml:validTime>
        <geo:dataSamplingInterval>300</geo:dataSamplingInterval>
        <geo:accuracy-percentRelativeHumidity>3</geo:accuracy-percentRelativeHumidity>
        <geo:aspiration>UNASPIRATED</geo:aspiration>
      </geo:HumiditySensor>
      <geo:dateInserted>2025-08-21T13:45:36Z</geo:dateInserted>
    </geo:humiditySensor>
    <geo:humiditySensor>
      <geo:HumiditySensor gml:id="humidity-sensor-2">
        <geo:type codeSpace="urn:ga-gov-au:humidity-sensor-type">BME280</geo:type>
        <geo:manufacturer>Bosch</geo:manufacturer>
        <geo:serialNumber>BME280LC10032</geo:serialNumber>
        <geo:heightDiffToAntenna>-1.55</geo:heightDiffToAntenna>
        <geo:calibrationDate/>
        <gml:validTime>
          <gml:TimePeriod gml:id="humidity-sensor-2-time-period-1">
            <gml:beginPosition>2026-01-23</gml:beginPosition>
            <gml:endPosition/>
          </gml:TimePeriod>
        </gml:validTime>
        <geo:dataSamplingInterval>300</geo:dataSamplingInterval>
        <geo:accuracy-percentRelativeHumidity>3</geo:accuracy-percentRelativeHumidity>
        <geo:aspiration>UNASPIRATED</geo:aspiration>
      </geo:HumiditySensor>
      <geo:dateInserted>2026-01-29T09:29:26Z</geo:dateInserted>
    </geo:humiditySensor>
    <geo:pressureSensor>
      <geo:PressureSensor gml:id="pressure-sensor-1">
        <geo:type codeSpace="urn:ga-gov-au:pressure-sensor-type">BME280</geo:type>
        <geo:manufacturer>Bosch</geo:manufacturer>
        <geo:serialNumber>BME280LC10007</geo:serialNumber>
        <geo:heightDiffToAntenna>-1.55</geo:heightDiffToAntenna>
        <geo:calibrationDate/>
        <gml:validTime>
          <gml:TimePeriod gml:id="pressure-sensor-1-time-period-1">
            <gml:beginPosition>2023-06-16</gml:beginPosition>
            <gml:endPosition>2025-10-11</gml:endPosition>
          </gml:TimePeriod>
        </gml:validTime>
        <geo:dataSamplingInterval>300</geo:dataSamplingInterval>
        <geo:accuracy-hPa>1</geo:accuracy-hPa>
      </geo:PressureSensor>
      <geo:dateInserted>2025-08-21T13:45:36Z</geo:dateInserted>
    </geo:pressureSensor>
    <geo:pressureSensor>
      <geo:PressureSensor gml:id="pressure-sensor-2">
        <geo:type codeSpace="urn:ga-gov-au:pressure-sensor-type">BME280</geo:type>
        <geo:manufacturer>Bosch</geo:manufacturer>
        <geo:serialNumber>BME280LC10032</geo:serialNumber>
        <geo:heightDiffToAntenna>-1.55</geo:heightDiffToAntenna>
        <geo:calibrationDate/>
        <gml:validTime>
          <gml:TimePeriod gml:id="pressure-sensor-2-time-period-1">
            <gml:beginPosition>2026-01-23</gml:beginPosition>
            <gml:endPosition/>
          </gml:TimePeriod>
        </gml:validTime>
        <geo:dataSamplingInterval>300</geo:dataSamplingInterval>
        <geo:accuracy-hPa>1</geo:accuracy-hPa>
      </geo:PressureSensor>
      <geo:dateInserted>2026-01-29T09:30:42Z</geo:dateInserted>
    </geo:pressureSensor>
    <geo:temperatureSensor>
      <geo:TemperatureSensor gml:id="temperature-sensor-1">
        <geo:type codeSpace="urn:ga-gov-au:temperature-sensor-type">BME280</geo:type>
        <geo:manufacturer>Bosch</geo:manufacturer>
        <geo:serialNumber>BME280LC10007</geo:serialNumber>
        <geo:heightDiffToAntenna>-1.55</geo:heightDiffToAntenna>
        <geo:calibrationDate/>
        <gml:validTime>
          <gml:TimePeriod gml:id="temperature-sensor-1-time-period-1">
            <gml:beginPosition>2023-06-16</gml:beginPosition>
            <gml:endPosition>2025-10-11</gml:endPosition>
          </gml:TimePeriod>
        </gml:validTime>
        <geo:dataSamplingInterval>300</geo:dataSamplingInterval>
        <geo:accuracy-degreesCelcius>0.3</geo:accuracy-degreesCelcius>
        <geo:aspiration>UNASPIRATED</geo:aspiration>
      </geo:TemperatureSensor>
      <geo:dateInserted>2025-08-21T13:45:35Z</geo:dateInserted>
    </geo:temperatureSensor>
    <geo:temperatureSensor>
      <geo:TemperatureSensor gml:id="temperature-sensor-2">
        <geo:type codeSpace="urn:ga-gov-au:temperature-sensor-type">BME280</geo:type>
        <geo:manufacturer>Bosch</geo:manufacturer>
        <geo:serialNumber>BME280LC10032</geo:serialNumber>
        <geo:heightDiffToAntenna>-1.55</geo:heightDiffToAntenna>
        <geo:calibrationDate/>
        <gml:validTime>
          <gml:TimePeriod gml:id="temperature-sensor-2-time-period-1">
            <gml:beginPosition>2026-01-23</gml:beginPosition>
            <gml:endPosition/>
          </gml:TimePeriod>
        </gml:validTime>
        <geo:dataSamplingInterval>300</geo:dataSamplingInterval>
        <geo:accuracy-degreesCelcius>0.3</geo:accuracy-degreesCelcius>
        <geo:aspiration>UNASPIRATED</geo:aspiration>
      </geo:TemperatureSensor>
      <geo:dateInserted>2026-01-29T09:32:16Z</geo:dateInserted>
    </geo:temperatureSensor>
    <geo:siteOwner gml:id="site-owner">
      <gmd:CI_ResponsibleParty>
        <gmd:individualName>
          <gco:CharacterString>GFZ Network Operator</gco:CharacterString>
        </gmd:individualName>
        <gmd:organisationName>
          <gco:CharacterString>GFZ Helmholtz Centre for Geosciences</gco:CharacterString>
        </gmd:organisationName>
        <gmd:contactInfo>
          <gmd:CI_Contact>
            <gmd:address>
              <gmd:CI_Address>
                <gmd:deliveryPoint>
                  <gco:CharacterString>Telegrafenberg, Potsdam, Brandenburg, 14473,
Germany</gco:CharacterString>
                </gmd:deliveryPoint>
                <gmd:electronicMailAddress>
                  <gco:CharacterString>gnss@gfz.de</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:siteOwner>
    <geo:siteMetadataCustodian gml:id="site-metadata-custodian">
      <gmd:CI_ResponsibleParty>
        <gmd:individualName>
          <gco:CharacterString>GFZ Network Operator</gco:CharacterString>
        </gmd:individualName>
        <gmd:organisationName>
          <gco:CharacterString>Hanoi University of Mining and Geology</gco:CharacterString>
        </gmd:organisationName>
        <gmd:contactInfo>
          <gmd:CI_Contact>
            <gmd:address>
              <gmd:CI_Address>
                <gmd:electronicMailAddress>
                  <gco:CharacterString>gnss@gfz.de</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>CDDIS</geo:dataCenter>
        <geo:dataCenter>IGN</geo:dataCenter>
        <geo:urlForMoreInformation>https://gnss.gfz.de</geo:urlForMoreInformation>
        <geo:siteMap/>
        <geo:siteDiagram/>
        <geo:horizonMask/>
        <geo:monumentDescription/>
        <geo:sitePictures/>
        <geo:antennaGraphicsWithDimensions/>
        <geo:insertTextGraphicFromAntenna>

                        +-----+                           &lt;--  0.1613
                      /         \
                     |           |
    +----------------+-----------+----------------+       &lt;--  0.1113  TCR
    |                                             |
    |                                             |
    |                                             |
    |                                             |
  +-+---------------------------------------------+-+
  +------------------+-----------+------------------+     &lt;--  0.0323  BCR
                     |           |
                     |           |
                     +----+ +----+                        &lt;--  0.0013  BPA
                          +x+                             &lt;--  0.0000  BAM=ARP
                                                                       NOM=NRP
  &lt;--                    0.3200                   --&gt;



    </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-3833">
        <gml:name>HUMG00VNM-20250515-1.png</gml:name>
        <geo:type>image</geo:type>
        <geo:receivedDate>2025-08-21T13:46:50Z</geo:receivedDate>
        <geo:body>
          <geo:fileReference xlink:href="https://network.igs.org/api/public/files/3833/"/>
        </geo:body>
      </geo:Document>
    </geo:associatedDocument>
    <geo:associatedDocument>
      <geo:Document gml:id="file-3834">
        <gml:name>HUMG00VNM-20250515-2.png</gml:name>
        <geo:type>image</geo:type>
        <geo:receivedDate>2025-08-21T13:46:50Z</geo:receivedDate>
        <geo:body>
          <geo:fileReference xlink:href="https://network.igs.org/api/public/files/3834/"/>
        </geo:body>
      </geo:Document>
    </geo:associatedDocument>
  </geo:siteLog>
</geo:GeodesyML>
