<?xml version="1.0" encoding="utf-8"?>
<TEI xmlns="http://www.tei-c.org/ns/1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:hal="http://hal.archives-ouvertes.fr/" xmlns:gml="http://www.opengis.net/gml/3.3/" xmlns:gmlce="http://www.opengis.net/gml/3.3/ce" version="1.1" xsi:schemaLocation="http://www.tei-c.org/ns/1.0 http://api.archives-ouvertes.fr/documents/aofr-sword.xsd">
  <teiHeader>
    <fileDesc>
      <titleStmt>
        <title>HAL TEI export of hal-03954001</title>
      </titleStmt>
      <publicationStmt>
        <distributor>CCSD</distributor>
        <availability status="restricted">
          <licence target="https://creativecommons.org/publicdomain/zero/1.0/">CC0 1.0 - Universal</licence>
        </availability>
        <date when="2026-05-20T12:09:56+02:00"/>
      </publicationStmt>
      <sourceDesc>
        <p part="N">HAL API Platform</p>
      </sourceDesc>
    </fileDesc>
  </teiHeader>
  <text>
    <body>
      <listBibl>
        <biblFull>
          <titleStmt>
            <title xml:lang="en">Multi-constellation GNSS orbit combination based on MGEX products</title>
            <author role="aut">
              <persName>
                <forename type="first">Gustavo</forename>
                <surname>Mansur</surname>
              </persName>
              <idno type="idhal" notation="numeric">1219044</idno>
              <idno type="halauthorid" notation="string">2704472-1219044</idno>
              <idno type="ORCID">https://orcid.org/0000-0003-2963-4886</idno>
              <affiliation ref="#struct-239972"/>
              <affiliation ref="#struct-86624"/>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">Pierre</forename>
                <surname>Sakic</surname>
              </persName>
              <email type="md5">43a959245d28633dbce3ea1a00106288</email>
              <email type="domain">ipgp.fr</email>
              <idno type="idhal" notation="string">psakic</idno>
              <idno type="idhal" notation="numeric">182605</idno>
              <idno type="halauthorid" notation="string">33324-182605</idno>
              <idno type="ORCID">https://orcid.org/0000-0003-1770-0532</idno>
              <idno type="IDREF">https://www.idref.fr/221012192</idno>
              <affiliation ref="#struct-239972"/>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">Benjamin</forename>
                <surname>Männel</surname>
              </persName>
              <idno type="halauthorid">2069689-0</idno>
              <affiliation ref="#struct-239972"/>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">Harald</forename>
                <surname>Schuh</surname>
              </persName>
              <idno type="idhal" notation="numeric">759604</idno>
              <idno type="halauthorid" notation="string">494113-759604</idno>
              <idno type="ORCID">https://orcid.org/0000-0001-5443-0370</idno>
              <idno type="IDREF">https://www.idref.fr/170714586</idno>
              <affiliation ref="#struct-239972"/>
              <affiliation ref="#struct-86624"/>
            </author>
            <editor role="depositor">
              <persName>
                <forename>Pierre</forename>
                <surname>Sakic</surname>
              </persName>
              <email type="md5">43a959245d28633dbce3ea1a00106288</email>
              <email type="domain">ipgp.fr</email>
            </editor>
          </titleStmt>
          <editionStmt>
            <edition n="v1" type="current">
              <date type="whenSubmitted">2023-01-24 12:20:08</date>
              <date type="whenModified">2025-04-14 16:28:02</date>
              <date type="whenReleased">2023-02-16 16:19:46</date>
              <date type="whenProduced">2020</date>
              <date type="whenEndEmbargoed">2023-01-24</date>
              <ref type="file" target="https://hal.science/hal-03954001v1/document">
                <date notBefore="2023-01-24"/>
              </ref>
              <ref type="file" subtype="greenPublisher" n="1" target="https://hal.science/hal-03954001v1/file/adgeo-50-57-2020.pdf" id="file-3954001-3453256">
                <date notBefore="2023-01-24"/>
              </ref>
            </edition>
            <respStmt>
              <resp>contributor</resp>
              <name key="75461">
                <persName>
                  <forename>Pierre</forename>
                  <surname>Sakic</surname>
                </persName>
                <email type="md5">43a959245d28633dbce3ea1a00106288</email>
                <email type="domain">ipgp.fr</email>
              </name>
            </respStmt>
          </editionStmt>
          <publicationStmt>
            <distributor>CCSD</distributor>
            <idno type="halId">hal-03954001</idno>
            <idno type="halUri">https://hal.science/hal-03954001</idno>
            <idno type="halBibtex">mansur:hal-03954001</idno>
            <idno type="halRefHtml">&lt;i&gt;Advances in Geosciences&lt;/i&gt;, 2020, 50, pp.57-64. &lt;a target="_blank" href="https://dx.doi.org/10.5194/adgeo-50-57-2020"&gt;&amp;#x27E8;10.5194/adgeo-50-57-2020&amp;#x27E9;&lt;/a&gt;</idno>
            <idno type="halRef">Advances in Geosciences, 2020, 50, pp.57-64. &amp;#x27E8;10.5194/adgeo-50-57-2020&amp;#x27E9;</idno>
            <availability status="restricted">
              <licence target="https://about.hal.science/hal-authorisation-v1/">HAL Authorization<ref corresp="#file-3954001-3453256"/></licence>
            </availability>
          </publicationStmt>
          <seriesStmt>
            <idno type="stamp" n="TEST3-HALCNRS">TEST3-HALCNRS</idno>
          </seriesStmt>
          <notesStmt>
            <note type="audience" n="2">International</note>
            <note type="popular" n="0">No</note>
            <note type="peer" n="1">Yes</note>
          </notesStmt>
          <sourceDesc>
            <biblStruct>
              <analytic>
                <title xml:lang="en">Multi-constellation GNSS orbit combination based on MGEX products</title>
                <author role="aut">
                  <persName>
                    <forename type="first">Gustavo</forename>
                    <surname>Mansur</surname>
                  </persName>
                  <idno type="idhal" notation="numeric">1219044</idno>
                  <idno type="halauthorid" notation="string">2704472-1219044</idno>
                  <idno type="ORCID">https://orcid.org/0000-0003-2963-4886</idno>
                  <affiliation ref="#struct-239972"/>
                  <affiliation ref="#struct-86624"/>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">Pierre</forename>
                    <surname>Sakic</surname>
                  </persName>
                  <email type="md5">43a959245d28633dbce3ea1a00106288</email>
                  <email type="domain">ipgp.fr</email>
                  <idno type="idhal" notation="string">psakic</idno>
                  <idno type="idhal" notation="numeric">182605</idno>
                  <idno type="halauthorid" notation="string">33324-182605</idno>
                  <idno type="ORCID">https://orcid.org/0000-0003-1770-0532</idno>
                  <idno type="IDREF">https://www.idref.fr/221012192</idno>
                  <affiliation ref="#struct-239972"/>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">Benjamin</forename>
                    <surname>Männel</surname>
                  </persName>
                  <idno type="halauthorid">2069689-0</idno>
                  <affiliation ref="#struct-239972"/>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">Harald</forename>
                    <surname>Schuh</surname>
                  </persName>
                  <idno type="idhal" notation="numeric">759604</idno>
                  <idno type="halauthorid" notation="string">494113-759604</idno>
                  <idno type="ORCID">https://orcid.org/0000-0001-5443-0370</idno>
                  <idno type="IDREF">https://www.idref.fr/170714586</idno>
                  <affiliation ref="#struct-239972"/>
                  <affiliation ref="#struct-86624"/>
                </author>
              </analytic>
              <monogr>
                <idno type="halJournalId" status="VALID">67</idno>
                <idno type="issn">1680-7340</idno>
                <idno type="eissn">1680-7359</idno>
                <title level="j">Advances in Geosciences</title>
                <imprint>
                  <publisher>European Geosciences Union</publisher>
                  <biblScope unit="volume">50</biblScope>
                  <biblScope unit="pp">57-64</biblScope>
                  <date type="datePub">2020</date>
                </imprint>
              </monogr>
              <idno type="doi">10.5194/adgeo-50-57-2020</idno>
            </biblStruct>
          </sourceDesc>
          <profileDesc>
            <langUsage>
              <language ident="en">English</language>
            </langUsage>
            <textClass>
              <classCode scheme="halDomain" n="sdu">Sciences of the Universe [physics]</classCode>
              <classCode scheme="halDomain" n="sdu.stu">Sciences of the Universe [physics]/Earth Sciences</classCode>
              <classCode scheme="halTypology" n="ART">Journal articles</classCode>
              <classCode scheme="halOldTypology" n="ART">Journal articles</classCode>
              <classCode scheme="halTreeTypology" n="ART">Journal articles</classCode>
            </textClass>
            <abstract xml:lang="en">
              <p>Abstract. The mission of the International GNSS Service (IGS) is to deliver highly accurate GNSS data and products to the scientific users and the community. Among these products, precise orbits, and clocks for GPS and GLONASS are available to the public. These products are system-wise combinations based on solutions provided by the Analysis Centers (AC). Over the past years, the IGS has been putting efforts in extending the service to other navigation satellite systems within the Multi-GNSS Experiment and Pilot Project (MGEX). Several ACs contribute by providing solutions containing not only GPS and GLONASS but also Galileo, BeiDou, and QZSS. However, there is no official MGEX combination so far. Therefore, we started to develop a new combination algorithm aiming at a fully consistent multi-constellation solution. We apply two different strategies focusing on the alignment of the orbits to the International Terrestrial Reference Frame (ITRF). In the first strategy, we use the Earth Rotation Parameters (ERP) to align the orbits, whereas in the second strategy Helmert parameters provided by the Terrestrial Frame Combination Center (TFCC) are applied. Based on the alignment we compare the GPS orbit products from both strategies with the official IGS orbits. These preliminary results show that the ERP strategy agrees with the official orbits around by 30 mm whereas, with the second strategy, the agreement is around 15 mm.</p>
            </abstract>
          </profileDesc>
        </biblFull>
      </listBibl>
    </body>
    <back>
      <listOrg type="structures">
        <org type="institution" xml:id="struct-239972" status="VALID">
          <idno type="ROR">https://ror.org/04z8jg394</idno>
          <orgName>German Research Centre for Geosciences - Helmholtz-Centre Potsdam</orgName>
          <orgName type="acronym">GFZ</orgName>
          <desc>
            <address>
              <addrLine>Telegrafenberg, 14473 Potsdam</addrLine>
              <country key="DE"/>
            </address>
            <ref type="url">https://www.gfz.de/</ref>
          </desc>
        </org>
        <org type="institution" xml:id="struct-86624" status="VALID">
          <idno type="ROR">https://ror.org/03v4gjf40</idno>
          <orgName>Technical University of Berlin / Technische Universität Berlin</orgName>
          <orgName type="acronym">TUB</orgName>
          <date type="start">1946-01-01</date>
          <desc>
            <address>
              <addrLine>Straße des 17. Juni 135 10623 Berlin</addrLine>
              <country key="DE"/>
            </address>
            <ref type="url">https://www.tu.berlin/</ref>
          </desc>
        </org>
      </listOrg>
    </back>
  </text>
</TEI>