https://gssc.esa.int/navipedia/index.php?action=history&feed=atom&title=EGNOS_Space_SegmentEGNOS Space Segment - Revision history2026-04-28T01:45:00ZRevision history for this page on the wikiMediaWiki 1.43.1https://gssc.esa.int/navipedia/index.php?title=EGNOS_Space_Segment&diff=14890&oldid=prevGema.Cueto at 11:02, 18 March 20202020-03-18T11:02:15Z<p></p>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>This space segment configuration provides a high level of redundancy over the whole service area in case of a geostationary satellite link failure. The EGNOS operations are handled in such a way that, at any point in time, at least two GEOs broadcast an operational signal. Since it is only necessary to track a single GEO satellite link to benefit from the EGNOS Services, this secures a switching capability in case of interruption and ensures a high level of continuity of service.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>This space segment configuration provides a high level of redundancy over the whole service area in case of a geostationary satellite link failure. The EGNOS operations are handled in such a way that, at any point in time, at least two GEOs broadcast an operational signal. Since it is only necessary to track a single GEO satellite link to benefit from the EGNOS Services, this secures a switching capability in case of interruption and ensures a high level of continuity of service.</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>[[File:<del style="font-weight: bold; text-decoration: none;">EGNOS_footprint</del>.png| <del style="font-weight: bold; text-decoration: none;">Coverage of </del>EGNOS <del style="font-weight: bold; text-decoration: none;">of GEOs with 5 degrees masking angle </del> |340px|thumb|right]]</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[[File:<ins style="font-weight: bold; text-decoration: none;">EGNOS_Coverage</ins>.png|<ins style="font-weight: bold; text-decoration: none;">Source: </ins>EGNOS <ins style="font-weight: bold; text-decoration: none;">Service Notice #22 <ref name = "EGNOS Service Notice22"> [https://egnos-user-support.essp-sas.eu/new_egnos_ops/sites/default/files/documents/service_notice_22_0.pdf EGNOS Service Notice 22]</ref> </ins> |340px|thumb|right]]</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>It is intended that the EGNOS space segment will be replenished over time in order to maintain a similar level of redundancy. The exact orbital location of future satellites may vary, though this will not impact the service offered to users. Similarly, different PRN code numbers may be assigned to future GEOs. The PRN code changes will be explain in the future Service Definition Documents <ref name=" EGNOS Safety of Life Service Definition Document">[https://egnos-user-support.essp-sas.eu/new_egnos_ops/sites/default/files/documents/egnos_sol_sdd_in_force.pdf EGNOS Safety of Life Service Definition Document ]</ref> <ref name=" EGNOS Open Service Service Definition Document">[https://egnos-user-support.essp-sas.eu/new_egnos_ops/sites/default/files/documents/egnos_os_sdd_in_force.pdf EGNOS Open Service Service Definition Document]</ref> and in complementary EGNOS Service Notices.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>It is intended that the EGNOS space segment will be replenished over time in order to maintain a similar level of redundancy. The exact orbital location of future satellites may vary, though this will not impact the service offered to users. Similarly, different PRN code numbers may be assigned to future GEOs. The PRN code changes will be explain in the future Service Definition Documents <ref name=" EGNOS Safety of Life Service Definition Document">[https://egnos-user-support.essp-sas.eu/new_egnos_ops/sites/default/files/documents/egnos_sol_sdd_in_force.pdf EGNOS Safety of Life Service Definition Document ]</ref> <ref name=" EGNOS Open Service Service Definition Document">[https://egnos-user-support.essp-sas.eu/new_egnos_ops/sites/default/files/documents/egnos_os_sdd_in_force.pdf EGNOS Open Service Service Definition Document]</ref> and in complementary EGNOS Service Notices.</div></td></tr>
</table>Gema.Cuetohttps://gssc.esa.int/navipedia/index.php?title=EGNOS_Space_Segment&diff=14877&oldid=prevGema.Cueto at 10:39, 18 March 20202020-03-18T10:39:04Z<p></p>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[File:EGNOS_footprint.png| Coverage of EGNOS of GEOs with 5 degrees masking angle |340px|thumb|right]]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[File:EGNOS_footprint.png| Coverage of EGNOS of GEOs with 5 degrees masking angle |340px|thumb|right]]</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>It is intended that the EGNOS space segment will be replenished over time in order to maintain a similar level of redundancy. The exact orbital location of future satellites may vary, though this will not impact the service offered to users. Similarly, different PRN code numbers may be assigned to future GEOs. The PRN code changes will be explain in the future Service Definition Documents <ref name=" EGNOS Safety of Life Service Definition Document">[https://egnos-user-support.essp-sas.eu/new_egnos_ops/sites/default/files/documents/egnos_sol_sdd_in_force.pdf EGNOS Safety of Life Service Definition Document ]</ref> <ref name=" EGNOS Open Service Service Definition Document">[https://<del style="font-weight: bold; text-decoration: none;">www</del>.<del style="font-weight: bold; text-decoration: none;">gsc</del>-<del style="font-weight: bold; text-decoration: none;">europa</del>.eu/<del style="font-weight: bold; text-decoration: none;">system</del>/files/<del style="font-weight: bold; text-decoration: none;">galileo_documents</del>/egnos_os_sdd_in_force.pdf EGNOS Open Service Service Definition Document]</ref> and in complementary EGNOS Service Notices.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>It is intended that the EGNOS space segment will be replenished over time in order to maintain a similar level of redundancy. The exact orbital location of future satellites may vary, though this will not impact the service offered to users. Similarly, different PRN code numbers may be assigned to future GEOs. The PRN code changes will be explain in the future Service Definition Documents <ref name=" EGNOS Safety of Life Service Definition Document">[https://egnos-user-support.essp-sas.eu/new_egnos_ops/sites/default/files/documents/egnos_sol_sdd_in_force.pdf EGNOS Safety of Life Service Definition Document ]</ref> <ref name=" EGNOS Open Service Service Definition Document">[https://<ins style="font-weight: bold; text-decoration: none;">egnos-user-support</ins>.<ins style="font-weight: bold; text-decoration: none;">essp</ins>-<ins style="font-weight: bold; text-decoration: none;">sas</ins>.eu/<ins style="font-weight: bold; text-decoration: none;">new_egnos_ops/sites/default</ins>/files/<ins style="font-weight: bold; text-decoration: none;">documents</ins>/egnos_os_sdd_in_force.pdf EGNOS Open Service Service Definition Document]</ref> and in complementary EGNOS Service Notices.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The foreseen new services will be made available from the provision of new signals from the last EGNOS transponders generation embarked on-board the SES-5 and ASTRA-5B geostationary satellites. Both satellites are capable of transmitting dual-frequency signals compliant with GPS L1/L5 and Galileo E1/E5 signal specifications (GPS L1/L5 and Galileo E1/E5 will be augmented by EGNOS V3 evolution), but L1-only signals were introduced into the EGNOS service provision.<ref>[http://www.gsa.europa.eu/news/gsa-kicks-egnos-geo-transponder-service-contracts GSA Kicks Off EGNOS GEO Transponder Service Contracts], GSA, November 27, 2014</ref></div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The foreseen new services will be made available from the provision of new signals from the last EGNOS transponders generation embarked on-board the SES-5 and ASTRA-5B geostationary satellites. Both satellites are capable of transmitting dual-frequency signals compliant with GPS L1/L5 and Galileo E1/E5 signal specifications (GPS L1/L5 and Galileo E1/E5 will be augmented by EGNOS V3 evolution), but L1-only signals were introduced into the EGNOS service provision.<ref>[http://www.gsa.europa.eu/news/gsa-kicks-egnos-geo-transponder-service-contracts GSA Kicks Off EGNOS GEO Transponder Service Contracts], GSA, November 27, 2014</ref></div></td></tr>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Inmarsat’s Third Generation satellites carry a navigation payload which is used by EGNOS, as can be seen in the Service Definition Document.<ref name=" EGNOS Open Service Service Definition Document">[https://<del style="font-weight: bold; text-decoration: none;">www</del>.<del style="font-weight: bold; text-decoration: none;">gsc</del>-<del style="font-weight: bold; text-decoration: none;">europa</del>.eu/<del style="font-weight: bold; text-decoration: none;">system</del>/files/<del style="font-weight: bold; text-decoration: none;">galileo_documents</del>/egnos_os_sdd_in_force.pdf EGNOS Open Service Service Definition Document]</ref></div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Inmarsat’s Third Generation satellites carry a navigation payload which is used by EGNOS, as can be seen in the Service Definition Document.<ref name=" EGNOS Open Service Service Definition Document">[https://<ins style="font-weight: bold; text-decoration: none;">egnos-user-support</ins>.<ins style="font-weight: bold; text-decoration: none;">essp</ins>-<ins style="font-weight: bold; text-decoration: none;">sas</ins>.eu/<ins style="font-weight: bold; text-decoration: none;">new_egnos_ops/sites/default</ins>/files/<ins style="font-weight: bold; text-decoration: none;">documents</ins>/egnos_os_sdd_in_force.pdf EGNOS Open Service Service Definition Document]</ref></div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The first Inmarsat-3 (F2 AOR-E) satellite carrying an EGNOS transponder was launched in September 1996 (PRN 120) while the second one, Inmarsat-3 F5 IOR-W, was launched in February 1998 (PRN 126).</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The first Inmarsat-3 (F2 AOR-E) satellite carrying an EGNOS transponder was launched in September 1996 (PRN 120) while the second one, Inmarsat-3 F5 IOR-W, was launched in February 1998 (PRN 126).</div></td></tr>
</table>Gema.Cuetohttps://gssc.esa.int/navipedia/index.php?title=EGNOS_Space_Segment&diff=14862&oldid=prevGema.Cueto: /* The Inmarsat-3 Satellite-Navigation Mission */2020-03-18T09:09:12Z<p><span class="autocomment">The Inmarsat-3 Satellite-Navigation Mission</span></p>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The first Inmarsat-3 (F2 AOR-E) satellite carrying an EGNOS transponder was launched in September 1996 (PRN 120) while the second one, Inmarsat-3 F5 IOR-W, was launched in February 1998 (PRN 126).</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The first Inmarsat-3 (F2 AOR-E) satellite carrying an EGNOS transponder was launched in September 1996 (PRN 120) while the second one, Inmarsat-3 F5 IOR-W, was launched in February 1998 (PRN 126).</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Inmarsat-3s were built by Lockheed Martin Astro Space (now Lockheed Martin Missiles & Space) of the USA, responsible for the basic spacecraft, and the European Matra Marconi Space (now Astrium), which developed the communications payload, being the first <del style="font-weight: bold; text-decoration: none;">satellitelaunched </del>by the Proton launch vehicle.<ref name=" Inmarsat Wikipedia Web site">[https://en.wikipedia.org/wiki/Inmarsat Inmarsat Wikipedia Web site]</ref></div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Inmarsat-3s were built by Lockheed Martin Astro Space (now Lockheed Martin Missiles & Space) of the USA, responsible for the basic spacecraft, and the European Matra Marconi Space (now Astrium), which developed the communications payload, being the first <ins style="font-weight: bold; text-decoration: none;">satellite launched </ins>by the Proton launch vehicle.<ref name=" Inmarsat Wikipedia Web site">[https://en.wikipedia.org/wiki/Inmarsat Inmarsat Wikipedia Web site]</ref></div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> </div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>On 30th August 2018, the GEO satellite INMARSAT 3F2 (PRN120) became part of the EGNOS TEST Platform broadcasting the TEST SIS. On 1st January 2019, it ceased to broadcast EGNOS SIS and was totally removed from the EGNOS system<ref name=" EGNOS GEO Evolution">[https://egnos-user-support.essp-sas.eu/new_egnos_ops/sites/default/files/documents/service_notice_15.pdf EGNOS Service Notice 15 ]</ref>.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>On 30th August 2018, the GEO satellite INMARSAT 3F2 (PRN120) became part of the EGNOS TEST Platform broadcasting the TEST SIS. On 1st January 2019, it ceased to broadcast EGNOS SIS and was totally removed from the EGNOS system<ref name=" EGNOS GEO Evolution">[https://egnos-user-support.essp-sas.eu/new_egnos_ops/sites/default/files/documents/service_notice_15.pdf EGNOS Service Notice 15 ]</ref>.</div></td></tr>
</table>Gema.Cuetohttps://gssc.esa.int/navipedia/index.php?title=EGNOS_Space_Segment&diff=14861&oldid=prevGema.Cueto at 09:07, 18 March 20202020-03-18T09:07:44Z<p></p>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[File:EGNOS_footprint.png| Coverage of EGNOS of GEOs with 5 degrees masking angle |340px|thumb|right]]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[File:EGNOS_footprint.png| Coverage of EGNOS of GEOs with 5 degrees masking angle |340px|thumb|right]]</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>It is intended that the EGNOS space segment will be replenished over time in order to maintain a similar level of redundancy. The exact orbital location of future satellites may vary, though this will not impact the service offered to users. Similarly, different PRN code numbers may be assigned to future GEOs. The PRN code changes will be explain in the future Service Definition Documents<del style="font-weight: bold; text-decoration: none;">.</del><ref name=" EGNOS Safety of Life Service Definition Document">[https://egnos-user-support.essp-sas.eu/new_egnos_ops/sites/default/files/documents/egnos_sol_sdd_in_force.pdf EGNOS Safety of Life Service Definition Document ]</ref> <ref name=" EGNOS Open Service Service Definition Document">[https://www.gsc-europa.eu/system/files/galileo_documents/egnos_os_sdd_in_force.pdf EGNOS Open Service Service Definition Document]</ref> and in complementary EGNOS Service Notices.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>It is intended that the EGNOS space segment will be replenished over time in order to maintain a similar level of redundancy. The exact orbital location of future satellites may vary, though this will not impact the service offered to users. Similarly, different PRN code numbers may be assigned to future GEOs. The PRN code changes will be explain in the future Service Definition Documents <ref name=" EGNOS Safety of Life Service Definition Document">[https://egnos-user-support.essp-sas.eu/new_egnos_ops/sites/default/files/documents/egnos_sol_sdd_in_force.pdf EGNOS Safety of Life Service Definition Document ]</ref> <ref name=" EGNOS Open Service Service Definition Document">[https://www.gsc-europa.eu/system/files/galileo_documents/egnos_os_sdd_in_force.pdf EGNOS Open Service Service Definition Document]</ref> and in complementary EGNOS Service Notices.</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>The services will be made available from the provision of new signals from the last EGNOS transponders generation embarked on-board the SES-5 and ASTRA-5B geostationary satellites. Both satellites are capable of transmitting dual-frequency signals compliant with GPS L1/L5 and Galileo E1/E5 signal specifications (GPS L1/L5 and Galileo E1/E5 will be augmented by EGNOS V3 evolution), but L1-only signals were introduced into the EGNOS service provision.<ref>[http://www.gsa.europa.eu/news/gsa-kicks-egnos-geo-transponder-service-contracts GSA Kicks Off EGNOS GEO Transponder Service Contracts], GSA, November 27, 2014</ref></div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>The <ins style="font-weight: bold; text-decoration: none;">foreseen new </ins>services will be made available from the provision of new signals from the last EGNOS transponders generation embarked on-board the SES-5 and ASTRA-5B geostationary satellites. Both satellites are capable of transmitting dual-frequency signals compliant with GPS L1/L5 and Galileo E1/E5 signal specifications (GPS L1/L5 and Galileo E1/E5 will be augmented by EGNOS V3 evolution), but L1-only signals were introduced into the EGNOS service provision.<ref>[http://www.gsa.europa.eu/news/gsa-kicks-egnos-geo-transponder-service-contracts GSA Kicks Off EGNOS GEO Transponder Service Contracts], GSA, November 27, 2014</ref></div></td></tr>
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</table>Gema.Cuetohttps://gssc.esa.int/navipedia/index.php?title=EGNOS_Space_Segment&diff=14860&oldid=prevGema.Cueto at 09:05, 18 March 20202020-03-18T09:05:25Z<p></p>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* Astra-5B | PRN Number 123 | Orbital Slot 31.5 E</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* Astra-5B | PRN Number 123 | Orbital Slot 31.5 E</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>EGNOS GEO satellites SES-5 (PRN 136), ASTRE 5B (PRN 123) and INMARSAT 4F2 EMEA (PRN 126) are currently part of the EGNOS operational platform and are transmitting the operational Signal-In-Space (SIS) to be used by EGNOS users. <del style="font-weight: bold; text-decoration: none;">From </del>1st January 2019 <del style="font-weight: bold; text-decoration: none;">onward, PRN 123 and PRN 136 are operational and PRN 126 is in test mode whereas </del>the INMARSAT 3F2 AOR-E(PRN 120) <del style="font-weight: bold; text-decoration: none;">has been totally removed from </del>the <del style="font-weight: bold; text-decoration: none;">EGNOS system</del>.<ref name=" EGNOS <del style="font-weight: bold; text-decoration: none;">GEO Evolution</del>">[https://egnos-user-support.essp-sas.eu/new_egnos_ops/sites/default/files/documents/<del style="font-weight: bold; text-decoration: none;">service_notice_15</del>.pdf EGNOS Service Notice <del style="font-weight: bold; text-decoration: none;">15 </del>]</ref></div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>EGNOS GEO satellites SES-5 (PRN 136), ASTRE 5B (PRN 123) and INMARSAT 4F2 EMEA (PRN 126) are currently part of the EGNOS operational platform and are transmitting the operational Signal-In-Space (SIS) to be used by EGNOS users. <ins style="font-weight: bold; text-decoration: none;">On </ins>1st January 2019 the INMARSAT 3F2 AOR-E (PRN 120) <ins style="font-weight: bold; text-decoration: none;">was decommissioned.<ref name = "EGNOS Service Notice"> [https://egnos-user-support.essp-sas.eu/new_egnos_ops/sites/default/files/documents/service_notice_20_0.pdf EGNOS Service Notice 20]</ref> From 23rd March 2020 onwards, PRN123 and PRN136 are operational while </ins>the <ins style="font-weight: bold; text-decoration: none;">PRN126 is in test mode</ins>.<ref name = "EGNOS <ins style="font-weight: bold; text-decoration: none;">Service Notice22</ins>"> [https://egnos-user-support.essp-sas.eu/new_egnos_ops/sites/default/files/documents/<ins style="font-weight: bold; text-decoration: none;">service_notice_22_0</ins>.pdf EGNOS Service Notice <ins style="font-weight: bold; text-decoration: none;">22</ins>]</ref></div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>This space segment configuration provides a high level of redundancy over the whole service area in case of a geostationary satellite link failure. The EGNOS operations are handled in such a way that, at any point in time, at least two <del style="font-weight: bold; text-decoration: none;">of the four </del>GEOs broadcast an operational signal. Since it is only necessary to track a single GEO satellite link to benefit from the EGNOS Services, this secures a switching capability in case of interruption and ensures a high level of continuity of service.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>This space segment configuration provides a high level of redundancy over the whole service area in case of a geostationary satellite link failure. The EGNOS operations are handled in such a way that, at any point in time, at least two GEOs broadcast an operational signal. Since it is only necessary to track a single GEO satellite link to benefit from the EGNOS Services, this secures a switching capability in case of interruption and ensures a high level of continuity of service.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[File:EGNOS_footprint.png| Coverage of EGNOS of GEOs with 5 degrees masking angle |340px|thumb|right]]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[File:EGNOS_footprint.png| Coverage of EGNOS of GEOs with 5 degrees masking angle |340px|thumb|right]]</div></td></tr>
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</table>Gema.Cuetohttps://gssc.esa.int/navipedia/index.php?title=EGNOS_Space_Segment&diff=14859&oldid=prevGema.Cueto at 09:01, 18 March 20202020-03-18T09:01:24Z<p></p>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>|Title={{PAGENAME}}</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>|Title={{PAGENAME}}</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>}}</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>}}</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>The EGNOS space segment is composed of four geostationary satellites (GEO) broadcasting corrections and integrity information for GPS satellites in the L1 frequency band (1575,42 MHz). The configuration of the GEOs in operation does not change frequently but possible updates are nevertheless reported to users by the EGNOS Service Provider. At the date of publication the 4 GEOs used by EGNOS are: </div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>The EGNOS space segment is composed of four geostationary satellites (GEO) broadcasting corrections and integrity information for GPS satellites in the L1 frequency band (1575,42 MHz). The configuration of the GEOs in operation does not change frequently but possible updates are nevertheless reported to users by the EGNOS Service Provider. At the date of publication the 4 GEOs used by EGNOS <ins style="font-weight: bold; text-decoration: none;">over time </ins>are: </div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* Inmarsat 3F2 AOR-E | PRN Number 120 | Orbital Slot 15.5 W</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* Inmarsat 3F2 AOR-E | PRN Number 120 | Orbital Slot 15.5 W</div></td></tr>
</table>Gema.Cuetohttps://gssc.esa.int/navipedia/index.php?title=EGNOS_Space_Segment&diff=14330&oldid=prevGema.Cueto at 14:04, 28 February 20192019-02-28T14:04:22Z<p></p>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The first Inmarsat-3 (F2 AOR-E) satellite carrying an EGNOS transponder was launched in September 1996 (PRN 120) while the second one, Inmarsat-3 F5 IOR-W, was launched in February 1998 (PRN 126).</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The first Inmarsat-3 (F2 AOR-E) satellite carrying an EGNOS transponder was launched in September 1996 (PRN 120) while the second one, Inmarsat-3 F5 IOR-W, was launched in February 1998 (PRN 126).</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Inmarsat-3s were built by Lockheed Martin Astro Space (now Lockheed Martin Missiles & Space) of the USA, responsible for the basic spacecraft, and the European Matra Marconi Space (now Astrium), which developed the communications payload, being the first satellitelaunched by the Proton launch vehicle.<ref name=" Inmarsat Wikipedia Web site">[https://<del style="font-weight: bold; text-decoration: none;">www</del>.<del style="font-weight: bold; text-decoration: none;">nav-es</del>.<del style="font-weight: bold; text-decoration: none;">com</del>/<del style="font-weight: bold; text-decoration: none;">es</del>/<del style="font-weight: bold; text-decoration: none;">web?q=wikipedia+inmarsat </del>Inmarsat Wikipedia Web site]</ref></div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Inmarsat-3s were built by Lockheed Martin Astro Space (now Lockheed Martin Missiles & Space) of the USA, responsible for the basic spacecraft, and the European Matra Marconi Space (now Astrium), which developed the communications payload, being the first satellitelaunched by the Proton launch vehicle.<ref name=" Inmarsat Wikipedia Web site">[https://<ins style="font-weight: bold; text-decoration: none;">en</ins>.<ins style="font-weight: bold; text-decoration: none;">wikipedia</ins>.<ins style="font-weight: bold; text-decoration: none;">org</ins>/<ins style="font-weight: bold; text-decoration: none;">wiki</ins>/<ins style="font-weight: bold; text-decoration: none;">Inmarsat </ins>Inmarsat Wikipedia Web site]</ref></div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"> </del></div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"> </ins></div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>On 30th August 2018, the GEO satellite INMARSAT 3F2 (PRN120) became part of the EGNOS TEST Platform broadcasting the TEST SIS <del style="font-weight: bold; text-decoration: none;">until it ceased to broadcast EGNOS SIS on </del>1st January 2019, it ceased to broadcast EGNOS SIS and was totally removed from the EGNOS system<ref name=" EGNOS GEO Evolution">[https://egnos-user-support.essp-sas.eu/new_egnos_ops/sites/default/files/documents/service_notice_15.pdf EGNOS Service Notice 15 ]</ref>.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>On 30th August 2018, the GEO satellite INMARSAT 3F2 (PRN120) became part of the EGNOS TEST Platform broadcasting the TEST SIS<ins style="font-weight: bold; text-decoration: none;">. On </ins>1st January 2019, it ceased to broadcast EGNOS SIS and was totally removed from the EGNOS system<ref name=" EGNOS GEO Evolution">[https://egnos-user-support.essp-sas.eu/new_egnos_ops/sites/default/files/documents/service_notice_15.pdf EGNOS Service Notice 15 ]</ref>.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==The Inmarsat-4 Satellite-Navigation Mission==</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==The Inmarsat-4 Satellite-Navigation Mission==</div></td></tr>
</table>Gema.Cuetohttps://gssc.esa.int/navipedia/index.php?title=EGNOS_Space_Segment&diff=14329&oldid=prevGema.Cueto at 13:13, 28 February 20192019-02-28T13:13:30Z<p></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Inmarsat’s Third Generation satellites carry a navigation payload which is used by EGNOS, as can be seen in the Service Definition Document.<ref name=" EGNOS Open Service Service Definition Document">[https://www.gsc-europa.eu/system/files/galileo_documents/egnos_os_sdd_in_force.pdf EGNOS Open Service Service Definition Document]</ref></div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Inmarsat’s Third Generation satellites carry a navigation payload which is used by EGNOS, as can be seen in the Service Definition Document.<ref name=" EGNOS Open Service Service Definition Document">[https://www.gsc-europa.eu/system/files/galileo_documents/egnos_os_sdd_in_force.pdf EGNOS Open Service Service Definition Document]</ref></div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>The first Inmarsat-3 (F2 AOR-E) satellite carrying an EGNOS transponder was launched in September 1996 (PRN 120) while the second one, Inmarsat-3 F5 IOR-W, was launched in February 1998 (PRN 126)<del style="font-weight: bold; text-decoration: none;">.<ref name=" EGNOS Programme Evolution">[https://egnos-user-support.essp-sas.eu/new_egnos_ops/ EGNOS Programme Evolution (EGNOS Portal) ]</ref></del></div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>The first Inmarsat-3 (F2 AOR-E) satellite carrying an EGNOS transponder was launched in September 1996 (PRN 120) while the second one, Inmarsat-3 F5 IOR-W, was launched in February 1998 (PRN 126).</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> </div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">Inmarsat-3s were built by Lockheed Martin Astro Space (now Lockheed Martin Missiles & Space) of the USA, responsible for the basic spacecraft, and the European Matra Marconi Space (now Astrium), which developed the communications payload, being the first satellite [http://www.ilslaunch.com/newsroom/news-releases/proton-219-successfully-launches-inmarsat-iii-f2 ] launched by the Proton launch vehicle.</del></div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">On 30th August 2018, the GEO satellite INMARSAT 3F2 (PRN120) became part of the EGNOS TEST Platform broadcasting the TEST SIS until it ceased to broadcast EGNOS SIS on 1st January 2019, and it has been totally removed from the EGNOS system</del>.</div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">Inmarsat-3s were built by Lockheed Martin Astro Space (now Lockheed Martin Missiles & Space) of the USA, responsible for the basic spacecraft, and the European Matra Marconi Space (now Astrium), which developed the communications payload, being the first satellitelaunched by the Proton launch vehicle.<ref name=" Inmarsat Wikipedia Web site">[https://www.nav-es.com/es/web?q=wikipedia+inmarsat Inmarsat Wikipedia Web site]</ref></ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"> </ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">On 30th August 2018, the GEO satellite INMARSAT 3F2 (PRN120) became part of the EGNOS TEST Platform broadcasting the TEST SIS until it ceased to broadcast EGNOS SIS on 1st January 2019, it ceased to broadcast EGNOS SIS and was totally removed from the EGNOS system<ref name=" EGNOS GEO Evolution">[https://egnos-user-support.essp-sas.eu/new_egnos_ops/sites/default/files/documents/service_notice_15.pdf EGNOS Service Notice 15 ]</ref>.</ins></div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==The Inmarsat-4 Satellite-Navigation Mission==</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==The Inmarsat-4 Satellite-Navigation Mission==</div></td></tr>
</table>Gema.Cuetohttps://gssc.esa.int/navipedia/index.php?title=EGNOS_Space_Segment&diff=14328&oldid=prevGema.Cueto at 12:51, 28 February 20192019-02-28T12:51:54Z<p></p>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[File:EGNOS_footprint.png| Coverage of EGNOS of GEOs with 5 degrees masking angle |340px|thumb|right]]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[File:EGNOS_footprint.png| Coverage of EGNOS of GEOs with 5 degrees masking angle |340px|thumb|right]]</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>It is intended that the EGNOS space segment will be replenished over time in order to maintain a similar level of redundancy. The exact orbital location of future satellites may vary, though this will not impact the service offered to users. Similarly, different PRN code numbers may be assigned to future GEOs. The PRN code changes will be explain in the future Service Definition Documents.<ref name=" EGNOS Safety of Life <del style="font-weight: bold; text-decoration: none;">SDD</del>">[https://egnos-user-support.essp-sas.eu/new_egnos_ops/sites/default/files/documents/egnos_sol_sdd_in_force.pdf EGNOS Safety of Life <del style="font-weight: bold; text-decoration: none;">SDD </del>]</ref> <ref name=" EGNOS Open Service Service Definition Document">[https://www.gsc-europa.eu/system/files/galileo_documents/egnos_os_sdd_in_force.pdf EGNOS Open Service Service Definition Document]</ref> and in complementary EGNOS Service Notices.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>It is intended that the EGNOS space segment will be replenished over time in order to maintain a similar level of redundancy. The exact orbital location of future satellites may vary, though this will not impact the service offered to users. Similarly, different PRN code numbers may be assigned to future GEOs. The PRN code changes will be explain in the future Service Definition Documents.<ref name=" EGNOS Safety of Life <ins style="font-weight: bold; text-decoration: none;">Service Definition Document</ins>">[https://egnos-user-support.essp-sas.eu/new_egnos_ops/sites/default/files/documents/egnos_sol_sdd_in_force.pdf EGNOS Safety of Life <ins style="font-weight: bold; text-decoration: none;">Service Definition Document </ins>]</ref> <ref name=" EGNOS Open Service Service Definition Document">[https://www.gsc-europa.eu/system/files/galileo_documents/egnos_os_sdd_in_force.pdf EGNOS Open Service Service Definition Document]</ref> and in complementary EGNOS Service Notices.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The services will be made available from the provision of new signals from the last EGNOS transponders generation embarked on-board the SES-5 and ASTRA-5B geostationary satellites. Both satellites are capable of transmitting dual-frequency signals compliant with GPS L1/L5 and Galileo E1/E5 signal specifications (GPS L1/L5 and Galileo E1/E5 will be augmented by EGNOS V3 evolution), but L1-only signals were introduced into the EGNOS service provision.<ref>[http://www.gsa.europa.eu/news/gsa-kicks-egnos-geo-transponder-service-contracts GSA Kicks Off EGNOS GEO Transponder Service Contracts], GSA, November 27, 2014</ref></div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The services will be made available from the provision of new signals from the last EGNOS transponders generation embarked on-board the SES-5 and ASTRA-5B geostationary satellites. Both satellites are capable of transmitting dual-frequency signals compliant with GPS L1/L5 and Galileo E1/E5 signal specifications (GPS L1/L5 and Galileo E1/E5 will be augmented by EGNOS V3 evolution), but L1-only signals were introduced into the EGNOS service provision.<ref>[http://www.gsa.europa.eu/news/gsa-kicks-egnos-geo-transponder-service-contracts GSA Kicks Off EGNOS GEO Transponder Service Contracts], GSA, November 27, 2014</ref></div></td></tr>
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</table>Gema.Cuetohttps://gssc.esa.int/navipedia/index.php?title=EGNOS_Space_Segment&diff=14327&oldid=prevGema.Cueto at 12:50, 28 February 20192019-02-28T12:50:20Z<p></p>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* Astra-5B | PRN Number 123 | Orbital Slot 31.5 E</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* Astra-5B | PRN Number 123 | Orbital Slot 31.5 E</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>EGNOS GEO satellites SES-5 (PRN 136), ASTRE 5B (PRN 123) and INMARSAT 4F2 EMEA (PRN 126) are currently part of the EGNOS operational platform and are transmitting the operational Signal-In-Space (SIS) to be used by EGNOS users<del style="font-weight: bold; text-decoration: none;">. The INMARSAT 3F2 AOR-E (PRN 120) is currently in test mode</del>. From 1st January 2019 onward, PRN 123 and PRN 136 are operational and PRN 126 is in test mode.<ref name=" EGNOS GEO Evolution">[https://egnos-user-support.essp-sas.eu/new_egnos_ops/sites/default/files/documents/service_notice_15.pdf EGNOS <del style="font-weight: bold; text-decoration: none;">GEO Evolution </del>]</ref></div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>EGNOS GEO satellites SES-5 (PRN 136), ASTRE 5B (PRN 123) and INMARSAT 4F2 EMEA (PRN 126) are currently part of the EGNOS operational platform and are transmitting the operational Signal-In-Space (SIS) to be used by EGNOS users. From 1st January 2019 onward, PRN 123 and PRN 136 are operational and PRN 126 is in test mode <ins style="font-weight: bold; text-decoration: none;">whereas the INMARSAT 3F2 AOR-E(PRN 120) has been totally removed from the EGNOS system</ins>.<ref name=" EGNOS GEO Evolution">[https://egnos-user-support.essp-sas.eu/new_egnos_ops/sites/default/files/documents/service_notice_15.pdf EGNOS <ins style="font-weight: bold; text-decoration: none;">Service Notice 15 </ins>]</ref></div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>This space segment configuration provides a high level of redundancy over the whole service area in case of a geostationary satellite link failure. The EGNOS operations are handled in such a way that, at any point in time, at least two of the four GEOs broadcast an operational signal. Since it is only necessary to track a single GEO satellite link to benefit from the EGNOS Services, this secures a switching capability in case of interruption and ensures a high level of continuity of service.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>This space segment configuration provides a high level of redundancy over the whole service area in case of a geostationary satellite link failure. The EGNOS operations are handled in such a way that, at any point in time, at least two of the four GEOs broadcast an operational signal. Since it is only necessary to track a single GEO satellite link to benefit from the EGNOS Services, this secures a switching capability in case of interruption and ensures a high level of continuity of service.</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>[[File:EGNOS_footprint.png| Coverage of EGNOS of GEOs with 5 degrees masking angle |340px|thumb|<del style="font-weight: bold; text-decoration: none;">left</del>]]</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[[File:EGNOS_footprint.png| Coverage of EGNOS of GEOs with 5 degrees masking angle |340px|thumb|<ins style="font-weight: bold; text-decoration: none;">right</ins>]]</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>It is intended that the EGNOS space segment will be replenished over time in order to maintain a similar level of redundancy. The exact orbital location of future satellites may vary, though this will not impact the service offered to users. Similarly, different PRN code numbers may be assigned to future GEOs. The PRN code changes will be explain in the future Service Definition Documents.<ref name=" EGNOS Safety of Life SDD">[https://egnos-user-support.essp-sas.eu/new_egnos_ops/sites/default/files/documents/egnos_sol_sdd_in_force.pdf EGNOS Safety of Life SDD ]</ref>and in complementary EGNOS Service Notices.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>It is intended that the EGNOS space segment will be replenished over time in order to maintain a similar level of redundancy. The exact orbital location of future satellites may vary, though this will not impact the service offered to users. Similarly, different PRN code numbers may be assigned to future GEOs. The PRN code changes will be explain in the future Service Definition Documents.<ref name=" EGNOS Safety of Life SDD">[https://egnos-user-support.essp-sas.eu/new_egnos_ops/sites/default/files/documents/egnos_sol_sdd_in_force.pdf EGNOS Safety of Life SDD <ins style="font-weight: bold; text-decoration: none;">]</ref> <ref name=" EGNOS Open Service Service Definition Document">[https://www.gsc-europa.eu/system/files/galileo_documents/egnos_os_sdd_in_force.pdf EGNOS Open Service Service Definition Document</ins>]</ref> and in complementary EGNOS Service Notices.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The services will be made available from the provision of new signals from the last EGNOS transponders generation embarked on-board the SES-5 and ASTRA-5B geostationary satellites. Both satellites are capable of transmitting dual-frequency signals compliant with GPS L1/L5 and Galileo E1/E5 signal specifications (GPS L1/L5 and Galileo E1/E5 will be augmented by EGNOS V3 evolution), but L1-only signals were introduced into the EGNOS service provision.<ref>[http://www.gsa.europa.eu/news/gsa-kicks-egnos-geo-transponder-service-contracts GSA Kicks Off EGNOS GEO Transponder Service Contracts], GSA, November 27, 2014</ref></div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The services will be made available from the provision of new signals from the last EGNOS transponders generation embarked on-board the SES-5 and ASTRA-5B geostationary satellites. Both satellites are capable of transmitting dual-frequency signals compliant with GPS L1/L5 and Galileo E1/E5 signal specifications (GPS L1/L5 and Galileo E1/E5 will be augmented by EGNOS V3 evolution), but L1-only signals were introduced into the EGNOS service provision.<ref>[http://www.gsa.europa.eu/news/gsa-kicks-egnos-geo-transponder-service-contracts GSA Kicks Off EGNOS GEO Transponder Service Contracts], GSA, November 27, 2014</ref></div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l34">Line 34:</td>
<td colspan="2" class="diff-lineno">Line 34:</td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[File:Inmarsat-3_Nav_Payload.JPG| Inmarsat-3 Navigation Payload block diagram |300px|thumb|right]]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[File:Inmarsat-3_Nav_Payload.JPG| Inmarsat-3 Navigation Payload block diagram |300px|thumb|right]]</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Inmarsat’s Third Generation satellites carry a navigation payload which is used by EGNOS, as can be seen in the Service Definition Document.<ref name=" <del style="font-weight: bold; text-decoration: none;">The Inmarsat-3 Satellite Navigation Payload</del>">[https://www.gsc-europa.eu/<del style="font-weight: bold; text-decoration: none;">news</del>/<del style="font-weight: bold; text-decoration: none;">new-egnos-open-service-definition-released </del>EGNOS <del style="font-weight: bold; text-decoration: none;">SDD</del>]</ref></div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Inmarsat’s Third Generation satellites carry a navigation payload which is used by EGNOS, as can be seen in the Service Definition Document.<ref name=" <ins style="font-weight: bold; text-decoration: none;">EGNOS Open Service Service Definition Document</ins>">[https://www.gsc-europa.eu/<ins style="font-weight: bold; text-decoration: none;">system</ins>/<ins style="font-weight: bold; text-decoration: none;">files/galileo_documents/egnos_os_sdd_in_force.pdf </ins>EGNOS <ins style="font-weight: bold; text-decoration: none;">Open Service Service Definition Document</ins>]</ref></div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The first Inmarsat-3 (F2 AOR-E) satellite carrying an EGNOS transponder was launched in September 1996 (PRN 120) while the second one, Inmarsat-3 F5 IOR-W, was launched in February 1998 (PRN 126).<ref name=" EGNOS Programme Evolution">[https://egnos-user-support.essp-sas.eu/new_egnos_ops/ EGNOS Programme Evolution (EGNOS Portal) ]</ref></div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The first Inmarsat-3 (F2 AOR-E) satellite carrying an EGNOS transponder was launched in September 1996 (PRN 120) while the second one, Inmarsat-3 F5 IOR-W, was launched in February 1998 (PRN 126).<ref name=" EGNOS Programme Evolution">[https://egnos-user-support.essp-sas.eu/new_egnos_ops/ EGNOS Programme Evolution (EGNOS Portal) ]</ref></div></td></tr>
</table>Gema.Cueto