<html><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;">Dear colleagues,<div><br></div><div><div>We are pleased to announce that the real-time all-frequency code/phase OSB streams in the format of IGS SSR from Wuhan can now be accessed at the mountpoint “OSBC00WHU1” from the casters of the IGS “products.igs-ip.net” and Wuhan “58.49.94.212”.</div><div><br></div><div>These OSBs are computed by fixing the real-time satellite orbits and clocks from SSRC00WHU0. Our OSB streams contain the 5-s code/phase biases (Ref: CoM) estimated every 5 minutes for the GPS L1/L2/L5, Galileo E1/E5a/E5b/E5/E6, BDS-2 B1I/B2I/B3I and BDS-3 B1I/B1C/B2a/B2b/B3I signals, and thus can enable all-frequency PPP ambiguity resolution. Conservatively, over 80% of GPS, Galileo and BDS-3 ambiguities can be resolved at a typical GNSS station, which depends on the global GNSS data stream quality. More details can refer to the following articles.</div><div><br></div><div>This work is funded by National Science Foundation of China (No. 42025401) and under the auspices of IAG Sub-Commission 4.2 “Multi-constellation and multi-frequency GNSS” and the IGS PPP-AR & RT WGs.</div><div><br></div><div>References:</div><div>Geng J, Wen Q, Zhang Q, Li G, Zhang K (2022) GNSS observable-specific phase biases for all-frequency PPP ambiguity resolution. J. Geod. 96, 11. doi:10.1007/s00190-022-01602-3</div><div>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. doi:10.1007/s10291-023-01610-6</div><div><br></div><div>Best</div><div>
<div dir="auto" style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><div>Jianghui Geng on behalf of the PRIDE Group including Jiang Guo, Jing Zeng, Kunlun Zhang and Wenyi Li</div><div>Chair of the IGS PPP-AR Pilot Project</div><div><br>Professor in GNSS Geodesy<br>GNSS Research Center, Wuhan University<br>Email: jgeng@whu.edu.cn<br>Office: +86 (0)27 68778955<br>Homepage: http://pride.whu.edu.cn</div><div><br></div><div>Earn the right to be wrong</div></div>
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