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		<title>Navipedia  - Recent changes [en]</title>
		<link>https://gssc.esa.int/navipedia/index.php?title=Special:RecentChanges</link>
		<description>Track the most recent changes to the wiki in this feed.</description>
		<language>en</language>
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		<lastBuildDate>Sat, 12 Sep 2026 15:46:10 GMT</lastBuildDate>
		<item>
			<title>GPS Services</title>
			<link>https://gssc.esa.int/navipedia/index.php?title=GPS_Services&amp;diff=16796&amp;oldid=16724</link>
			<guid isPermaLink="false">https://gssc.esa.int/navipedia/index.php?title=GPS_Services&amp;diff=16796&amp;oldid=16724</guid>
			<description>&lt;p&gt;Fixed PPS to SPS for referring to Standard Positioning Service.&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
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				&lt;col class=&quot;diff-content&quot; /&gt;
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				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 06:50, 11 September 2026&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l27&quot;&gt;Line 27:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 27:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;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;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;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;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;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;&quot;&gt;&lt;div&gt;==Standard Positioning Service==&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;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;&quot;&gt;&lt;div&gt;==Standard Positioning Service==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;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;&quot;&gt;&lt;div&gt;As defined by the United States Government is&amp;lt;ref&amp;gt;[https://archive.gps.gov/technical/ps/2020-SPS-performance-standard.pdf Global Positioning System Standard Positioning Service Performance Standard, 5th Ed. April 2020]&amp;lt;/ref&amp;gt; the GPS Standard Positioning Service (&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;PPS&lt;/del&gt;) is &#039;&#039;a positioning and timing service that it is available for peaceful civil, commercial and scientific use. It includes the C/A-code signal, the CM/CL-code signals, and the I5-code/Q5- code signals. The C/A-code signal is transmitted by all satellites and comprises an L1 carrier modulated by a coarse/acquisition (C/A) code ranging signal with a legacy navigation (LNAV) data message. The CM-code and CL-code signals are transmitted by some satellites and comprise an L2 carrier modulated by both a civil moderate length (CM) code ranging signal with a civil navigation (CNAV) data message and a civil long length (CL) code ranging signal without a data message. The I5-code and Q5-code signals are transmitted by some satellites and comprise an L5 carrier modulated by both a civil in-phase (I5) code ranging signal with a CNAV data message and a civil quadrature-phase (Q5) code ranging signal without a data message.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;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;&quot;&gt;&lt;div&gt;As defined by the United States Government is&amp;lt;ref&amp;gt;[https://archive.gps.gov/technical/ps/2020-SPS-performance-standard.pdf Global Positioning System Standard Positioning Service Performance Standard, 5th Ed. April 2020]&amp;lt;/ref&amp;gt; the GPS Standard Positioning Service (&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;SPS&lt;/ins&gt;) is &#039;&#039;a positioning and timing service that it is available for peaceful civil, commercial and scientific use. It includes the C/A-code signal, the CM/CL-code signals, and the I5-code/Q5- code signals. The C/A-code signal is transmitted by all satellites and comprises an L1 carrier modulated by a coarse/acquisition (C/A) code ranging signal with a legacy navigation (LNAV) data message. The CM-code and CL-code signals are transmitted by some satellites and comprise an L2 carrier modulated by both a civil moderate length (CM) code ranging signal with a civil navigation (CNAV) data message and a civil long length (CL) code ranging signal without a data message. The I5-code and Q5-code signals are transmitted by some satellites and comprise an L5 carrier modulated by both a civil in-phase (I5) code ranging signal with a CNAV data message and a civil quadrature-phase (Q5) code ranging signal without a data message.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;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;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;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;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;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;&quot;&gt;&lt;div&gt;The Standard Positioning Service is therefore based on:&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;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;&quot;&gt;&lt;div&gt;The Standard Positioning Service is therefore based on:&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</description>
			<pubDate>Fri, 11 Sep 2026 06:50:27 GMT</pubDate>
			<dc:creator>Jalbert</dc:creator>
			<comments>https://gssc.esa.int/navipedia/index.php?title=Talk:GPS_Services</comments>
		</item>
		<item>
			<title>PPP Systems</title>
			<link>https://gssc.esa.int/navipedia/index.php?title=PPP_Systems&amp;diff=16795&amp;oldid=14544</link>
			<guid isPermaLink="false">https://gssc.esa.int/navipedia/index.php?title=PPP_Systems&amp;diff=16795&amp;oldid=14544</guid>
			<description>&lt;p&gt;&lt;/p&gt;
&lt;a href=&quot;https://gssc.esa.int/navipedia/index.php?title=PPP_Systems&amp;amp;diff=16795&amp;amp;oldid=14544&quot;&gt;Show changes&lt;/a&gt;</description>
			<pubDate>Fri, 28 Aug 2026 07:01:15 GMT</pubDate>
			<dc:creator>Natalia.Castrillo</dc:creator>
			<comments>https://gssc.esa.int/navipedia/index.php?title=Talk:PPP_Systems</comments>
		</item>
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