<html aria-label="message body"><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><div style="font-family: GillSans;">Dear Colleagues</div><div style="font-family: GillSans;"><br></div><div style="font-family: GillSans;">Sorry for cross posting.</div><div style="font-family: GillSans;"><br></div><div style="font-family: GillSans;">We are pleased to release the WCC0OPSULT ultra-rapid combined products and the archived WUM0MGXRTS products from the Wuhan IGS Real-Time Service (RTS).</div><div style="font-family: GillSans;"><br></div><div style="font-family: GillSans;">The WCC (Wuhan Combination Center) ultra-rapid product combination is carried out operationally, and the combined products have been routinely archived on <a href="ftps://bdspride.com/wcc/">ftps://bdspride.com/wcc/</a> since June of 2026. The products are generated every six hours with a typical latency of roughly 6–8 hours. In-house evaluations showed that the observed parts achieved positioning precisions of about 5 and 8 mm in horizontal and vertical directions, respectively, for GPS or Galileo daily positioning, while 20 and 30 mm for GLONASS, benchmarked by the IGS weekly solutions. A dedicated webpage under the IGS WCC website has been established to visualize the combined ultra-rapid satellite orbit and clock solutions, together with the performance of individual AC’s contributions (<a href="https://igs.org/wg/wcc/#ultra">https://igs.org/wg/wcc/#ultra</a>).</div><div style="font-family: GillSans;"><br></div><div style="font-family: GillSans;">In addition, the real-time GNSS product streams from Wuhan (IGSMAIL-8424) have long been archived as WUM0MGXRTS products at <a href="ftp://igs.gnsswhu.cn/pub/whu/phasebias/">ftp://igs.gnsswhu.cn/pub/whu/phasebias/</a> since two years ago. These RTS include satellite orbit, clock and all-frequency phase/code bias products. They are typically available near immediately despite two hours of latency, and could provide positioning performance comparable with the rapid products. The open-source PRIDE PPP-AR (<a href="https://github.com/PrideLab/PRIDE-PPPAR/">https://github.com/PrideLab/PRIDE-PPPAR/</a>) software would automatically download and process the RTS products if the rapid products have not yet been available. This feature would provide ultra-rapid solutions for those urgent tasks. The archived RTS products will also be available at <a href="ftps://bdspride.com/wum/">ftps://bdspride.com/wum/</a> from GPS week 2427.</div><div style="font-family: GillSans;"><br></div><div style="font-family: GillSans;">This work is funded by National Science Foundation of China (U25D8020) and Central Government Funds for Hubei Science & Technology Development (2025CSA009). The reference is</div><div style="font-family: GillSans;">Guo J, Geng J, Zeng J, Song X, Defraigne P (2024) GPS/Galileo/BDS phase bias stream from Wuhan IGS analysis center for real-time PPP ambiguity resolution. GPS Solut. 28, 67. doi:10.1007/s10291-023-01610-6</div><div style="font-family: GillSans;"><br></div><div style="font-family: GillSans;">Best,</div><div style="font-family: GillSans;"><div dir="auto" style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><div dir="auto" style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><div dir="auto" style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><div dir="auto" style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><div dir="auto" style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><div dir="auto" style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><div dir="auto" style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><div dir="auto" style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">Jianghui Geng on behalf of the PRIDE Group including Jiang Guo, Qiang Wen and Yahao Zhang</div></div></div></div></div></div></div></div></div><div><div dir="auto" style="text-align: start; text-indent: 0px; overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><div dir="auto" style="text-align: start; text-indent: 0px; overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><div dir="auto" style="text-align: start; text-indent: 0px; overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><div dir="auto" style="text-align: start; text-indent: 0px; overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><div dir="auto" style="text-align: start; text-indent: 0px; overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><div dir="auto" style="text-align: start; text-indent: 0px; overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><div dir="auto" style="text-align: start; text-indent: 0px; overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><div dir="auto" style="text-align: start; text-indent: 0px; overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><div style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); letter-spacing: normal; text-transform: none; white-space: normal; word-spacing: 0px; text-decoration: none; -webkit-text-stroke-width: 0px;">Professor in GNSS Geodesy<br>Director of State Key Laboratory of Precision Geodesy,</div><div style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); letter-spacing: normal; text-transform: none; white-space: normal; word-spacing: 0px; text-decoration: none; -webkit-text-stroke-width: 0px;">APM, Chinese Academy of Sciences, Wuhan, China<br>Email: jgeng@apm.ac.cn<br>Office: +86 (0)27 68881316<br>Homepage: http://pride.apm.ac.cn</div><div>SKL hpage: https://sklpg.apm.ac.cn<br><br>Earn the right to be wrong</div><div style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); letter-spacing: normal; text-transform: none; white-space: normal; word-spacing: 0px; text-decoration: none; -webkit-text-stroke-width: 0px;"><br></div></div><br class="Apple-interchange-newline"></div><br class="Apple-interchange-newline"></div><br class="Apple-interchange-newline"></div><br class="Apple-interchange-newline"></div><br class="Apple-interchange-newline"></div><br class="Apple-interchange-newline"></div><br class="Apple-interchange-newline"></div><br class="Apple-interchange-newline"><br class="Apple-interchange-newline">
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