[IGSMAIL-8506] Day-boundary discontinuity specification and upgraded PRIDE PPP-AR v3.0

[Jianghui Geng]

Dear colleagues,



We are delighted to release the all-frequency rapid code/phase bias
products (i.e., WUM0MGXRAP ) containing quantities for the discontinuity of
orbits, clocks and code/phase biases (DOCB) as an integral at day
boundaries. The Wuhan IGS AC/DC has released such products since day 001,
2024 on ftp://igs.gnsswhu.cn/pub/whu/phasebias. The products from 2020 to
2023 are also being reprocessed. Details on such DOCB quantities refer to
http://pride.whu.edu.cn/ueditor/jsp/upload/file/20240906/1725615296863059719.pdf.
Note that this quantity and its format are still tentative and may change.
Users can safely ignore them without modifying their software to
accommodate the new block.



We have upgraded the open-source software PRIDE PPP-AR version 3.0 at
https://github.com/PrideLab/PRIDE-PPPAR
<https://github.com/PrideLab/PRIDE-PPPAR.> to accommodate this new
quantity. In addition, this version also updates the ocean tidal loading
module to support self-computed corrections in case of no oceanload
coefficients for user stations. Refer to https://www.zcyphygeodesy.com/en/
for more details and we thank Dr Chuanyin Zhang for his contribution. An
EarthScope online training course will be held on 10 and 12 of this
September (
https://www.earthscope.org/event/2024-technical-short-course-multi-gnss-precise-point-positioning-and-pride-ppp-ar/).
Recorded video will be on Youtube for open access after the course.



Please do not hesitate to contact us (pride at whu.edu.cn
<https://lists.igs.org/mailman/listinfo/igsmail>) if you have any problem
with the WUM0MGXRAP product or the PRIDE PPP-AR software. 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 Pilot Project PPP-AR (https://igs.org/wg/ppp-ar/#rapid).



Best regards,

Jianghui Geng on behalf of the PRIDE Group

Jianghui GENG

Professor in GNSS Geodesy

GNSS Research Center, Wuhan University

Office: +86 (0)27 68778955

Mobile: +86 17762578656

Homepage: http://pride.whu.edu.cn
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