PRIDE PPP-AR (Precise Point Positioning with Ambiguity Resolution) originates in Dr. Maorong Ge’s efforts on PPP-AR and later developed by Dr. Jianghui Geng’s team. It is an open-source software package which is based on many GNSS professionals’ collective work in GNSS Research Center, Wuhan University. We would like to thank them all for their brilliant contributions to this software. No proprietary modules are used anymore in the software. We make this package open source with the goal of benefiting those professionals in their early career, and also advocate the geodetic and geophysical applications of PPP-AR. Especially, we hope that this package can contribute to high-precision applications in geosciences such as crustal motion and troposphere sounding studies. The entire open-source project is funded by the National Natural Science Foundation of China (No. 42025401) and is under the auspices of IAG SC 4.2 “Positioning and Applications”.

The open-source software PRIDE PPP-AR introduced in this article can be downloaded from the website /~https://github.com/PrideLab/PRIDE-PPPAR. The precise products required for the software can be downloaded at ftp://igs.gnsswhu.cn/pub/whu/phasebias/. Latest updates for Support, Training courses and FAQ can be found at https://pride.whu.edu.cn/. The copyright of this package is protected by GNU General Public License (version 3). Relevant publications are

• Geng J, Zhang Q, Li G, et al. Observable-specific phase biases of Wuhan multi-GNSS experiment analysis center’s rapid satellite products[J]. Satellite Navigation, 2022, 3(1): 1-15. doi:10.1186/s43020-022-00084-0
• Geng J, Wen Q, Zhang Q, Li G, Zhang K (2022). GNSS observable-specific phase biases for all-frequency PPP ambiguity resolution. Journal of Geodesy, 96(11):1-18. doi:10.1007/s00190-022-01602-3
• Geng J, Chen X, Pan Y, Zhao Q (2019). A modified phase clock/bias model to improve PPP ambiguity resolution at Wuhan University. Journal of Geodesy, 93(10):2053-2067. doi:10.1007/s00190-019-01301-6
• Geng J, Chen X, Pan Y, Mao S, Li C, Zhou J, Zhang K (2019). PRIDE PPP‑AR: an open‑source software for GPS PPP ambiguity resolution. GPS Solutions, 23(91):1-10. doi:10.1007/s10291-019-0888-1
• Geng J, Yang S, Guo J (2021). Assessing IGS GPS/Galileo/BDS-2/BDS-3 phase bias products with PRIDE PPP-AR. Satellite Navigation, 2(1):1-15. doi:10.1186/s43020-021-00049-9
• Geng J, Mao S. Massive GNSS network analysis without baselines: Undifferenced ambiguity resolution. J. Geophys. Res. 2021, 126(10), e2020JB021558. doi:10.1029/2020JB021558
• ZENG J, GENG J, LI G, et al. Improving cycle slip detection in ambiguity-fixed precise point positioning for kinematic LEO orbit determination[J/OL]. GPS Solutions, 2024, 28(3): 135. doi:10.1007/s10291-024-01639-1.
• Geng, J., Zhang, H., Li, G. et al. Multipath mitigation for GPS/Galileo/BDS-3 precise point positioning with overlap-frequency signals. Satell Navig 5, 22 (2024). https://doi.org/10.1186/s43020-024-00144-7

PRIDE PPP-AR aims at post-processing of multi-GNSS data for the science community including geodesy, seismology, photogrammetry, gravimetry, etc. The major features of PRIDE PPP-AR include:

1. Multi-GNSS data processing with GPS, GLONASS, Galileo, BDS-2/3 and QZSS;
2. All-frequency PPP-AR on any dual-frequency ionosphere-free combinations of GPS, Galileo, and BDS-2/3;
3. High-rate GNSS data processing up to 50 Hz;
4. High-dynamic mobile platforms applicable for aerial photogrammetry, ship-borne gravimetry, etc;
5. Kinematic orbiting for LEO satellites;
6. Multi-day processing up to 108 days without day-boundary discontinuities;
7. IPPP clock estimation for time and frequency transfer;
8. Troposphere modeling with Vienna Mapping Function 1/3 (VMF1/VMF3);
9. Second-order ionospheric delay correction with GIM products;
10. Receiver clock jump detection and mitigation;
11. Adoption of the latest IGS conventions: Bias-SINEX, IGS20 reference frame, ORBEX, RINEX 4, etc.;
12. User-friendly operation and visualization for early-career researchers with lite-version GUI;
13. Ambiguity-float PPP with backward compatibility from 1994 when selective availablity (SA) was on;
14. Timely data processing with rapid (RAP) products and real-time archived (RTS) products.
15. Use oceanload correction module supported by Chinese Academy of Surveying and Mapping to enable oceanload correction without oceanload coefficient;
16. determine whether cross-day ambiguities need to be truncated according to the bias-SINEX file DOCB data block;
17. Support multipath modeling and compensation for static measurement stations.

If you encounter any issues during the software usage, you can contact us by sending an email to report bugs and seek assistance.

​ Email: pride@whu.edu.cn Website: pride.whu.edu.cn

For Chinese users, we have established a QQ communication group for discussing software-related usage questions. Group Number: 971523302. Leave your organization and name when applying for admission.