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<icalendar xmlns="urn:ietf:params:xml:ns:icalendar-2.0"><!-- created 20260307T084553Z using kigkonsult.se iCalcreator 2.26.9 iCal2XMl (rfc6321) --><vcalendar><properties><version><text>2.0</text></version><prodid><text>-//192.0.66.192//NONSGML kigkonsult.se iCalcreator 2.26.9//</text></prodid><calscale><text>GREGORIAN</text></calscale><method><text>PUBLISH</text></method><x-wr-calname><unknown>Spatial Source</unknown></x-wr-calname><x-wr-caldesc><unknown>Spatial Source</unknown></x-wr-caldesc><x-from-url><unknown>https://www.spatialsource.com.au</unknown></x-from-url><x-wr-timezone><unknown>Australia/Sydney</unknown></x-wr-timezone></properties><components><vtimezone><properties><tzid><text>Australia/Sydney</text></tzid><x-lic-location><unknown>Australia/Sydney</unknown></x-lic-location></properties><standard><properties><dtstart><date-time>2026-04-05T03:00:00</date-time></dtstart><rdate><date-time>2027-04-04T03:00:00</date-time></rdate><tzname><text>AEST</text></tzname><tzoffsetfrom><utc-offset>+11:00</utc-offset></tzoffsetfrom><tzoffsetto><utc-offset>+10:00</utc-offset></tzoffsetto></properties></standard><daylight><properties><dtstart><date-time>2025-10-05T02:00:00</date-time></dtstart><rdate><date-time>2026-10-04T02:00:00</date-time></rdate><tzname><text>AEDT</text></tzname><tzoffsetfrom><utc-offset>+10:00</utc-offset></tzoffsetfrom><tzoffsetto><utc-offset>+11:00</utc-offset></tzoffsetto></properties></daylight></vtimezone><vevent><properties><uid><text>ai1ec-42585@www.spatialsource.com.au</text></uid><dtstamp><date-time>2026-03-07T08:45:53Z</date-time></dtstamp><summary><text>International Association of Geodesy, Commission 4 Symposium</text></summary><description><text>&lt;div class="ai1ec-event-avatar alignleft timely"&gt;&lt;img src="https://www.spatialsource.com.au/wp-content/uploads/2024/12/bg-CjeIbeQC.png?w=280" width="280" height="202" /&gt;&lt;/div&gt;&lt;p&gt;&lt;strong&gt;The third International Association of Geodesy (IAG) Commission 4 Symposium will bring together scientists, researchers and professionals working in the broad field of positioning and its applications.&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;The &lt;a href="https://iagc4.bdsmart.cn/index" target="_blank" rel="noopener"&gt;symposium&lt;/a&gt; will serve as a platform for discussing research that leverages current and emerging positioning techniques and technologies. It aims to provide both practical and theoretical solutions across a wide range of topics.&lt;/p&gt;
&lt;p&gt;Discussions will address both technical and institutional aspects of developing GNSS backup systems, integrated positioning solutions, resilient PNT systems, and emerging LEO-based PNT techniques. The symposium will also explore space weather monitoring and forecasting through both ground-based and space-based geodetic observations. Additionally, the application of machine learning and artificial intelligence in geodesy will be examined.&lt;/p&gt;
&lt;p&gt;The main topics to be covered include:&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;Multi-frequency and multi-constellation GNSS technique&lt;/li&gt;
&lt;li&gt;Terrestrial and satellite-based positioning system development&lt;/li&gt;
&lt;li&gt;Multi-sensor fusion navigation and integrity monitoring&lt;/li&gt;
&lt;li&gt;Emerging positioning technologies, e.g., resilient PNT and LEO-based PNT&lt;/li&gt;
&lt;li&gt;Atmospheric space weather monitoring using geodetic observation techniques&lt;/li&gt;
&lt;li&gt;Applications of geodesy to engineering&lt;/li&gt;
&lt;li&gt;Artificial Intelligence technique for geodesy research&lt;/li&gt;
&lt;/ul&gt;</text></description><dtstart><parameters><tzid><text>Australia/Sydney</text></tzid></parameters><date-time>2025-05-13T08:30:00</date-time></dtstart><dtend><parameters><tzid><text>Australia/Sydney</text></tzid></parameters><date-time>2025-05-15T17:00:00</date-time></dtend><categories><parameters><language><text>en-US</text></language></parameters></categories><contact><text>https://iagc4.bdsmart.cn/index</text></contact><location><text>Wuhan, China</text></location><sequence><integer>0</integer></sequence><url><uri>https://www.spatialsource.com.au/event/international-association-of-geodesy-commission-4-symposium/</uri></url><x-cost-type><unknown>free</unknown></x-cost-type><x-wp-images-url><unknown>thumbnail;https://www.spatialsource.com.au/wp-content/uploads/2024/12/bg-CjeIbeQC.png?w=175&amp;h=140&amp;crop=1;175;140;1,medium;https://www.spatialsource.com.au/wp-content/uploads/2024/12/bg-CjeIbeQC.png?w=280;280;202;1,large;https://www.spatialsource.com.au/wp-content/uploads/2024/12/bg-CjeIbeQC.png?w=346;346;250;1</unknown></x-wp-images-url><x-tags><parameters><language><text>en-US</text></language></parameters><unknown>AI,China,geodesy,GNSS,PNT,positioning,space weather,symposium</unknown></x-tags></properties></vevent></components></vcalendar></icalendar>
