From June 1 to 5, 2026, Prof. Jianghui Geng, together with Dr. Qiang Wen and graduate student Bingchen Fu from the PRIDE team, attended the IGS Workshop 2026 in Santiago, Chile. This workshop marked the first time that an International GNSS Service (IGS) workshop has been held in South America since the establishment of the IGS. The event aimed to attract more organizations to join the IGS service framework and to further promote the development of GNSS technologies worldwide.

During the workshop, Prof. Geng delivered two oral presentations entitled “Consistent in-orbit calibration of all-frequency BDS-3 satellite antenna phase centers and their implications for the terrestrial reference frame scale” and “One-Hz real-time multi-GNSS satellite phase clocks for global rapid geohazard response.”

The first presentation introduced the team's recent work on the consistent calibration of all-frequency BDS-3 satellite antenna phase center offsets (PCOs). A unified calibration strategy was developed to ensure compatibility among different BDS-3 frequencies while maintaining consistency with the IGS20 terrestrial reference frame. The results demonstrated improved internal consistency of BDS-3 antenna models and provided important support for future updates of satellite antenna calibrations within the IGS framework.The second presentation focused on the team's efforts in generating real-time precise satellite clock and bias products with a 1 Hz update rate. Real-time and precise surface displacement monitoring is essential for rapid geohazard response. Compared with the current 5-second IGS clock products, 1 Hz GNSS satellite clocks provide significantly improved positioning performance. However, generating a stable 1 Hz real-time multi-GNSS clock stream, including GPS, GLONASS, Galileo, and BDS, remains computationally demanding. To address this challenge, the team developed GSeisRT, a real-time GNSS platform for geohazard monitoring that enables the global generation of 1 Hz real-time satellite clocks together with all-frequency code and phase bias products. 

The second presentation focused on the team's efforts in generating real-time precise satellite clock and bias products with a 1 Hz update rate. Real-time and precise surface displacement monitoring is essential for rapid geohazard response. Compared with the current 5-second IGS clock products, 1 Hz GNSS satellite clocks provide significantly improved positioning performance. However, generating a stable 1 Hz real-time multi-GNSS clock stream, including GPS, GLONASS, Galileo, and BDS, remains computationally demanding. To address this challenge, the team developed GSeisRT, a real-time GNSS platform for geohazard monitoring that enables the global generation of 1 Hz real-time satellite clocks together with all-frequency code and phase bias products. 

During a splinter meeting, Dr. Qiang Wen presented a report entitled “WCC Update,” highlighting the recent progress of the IGS Wuhan Combination Center (WCC), which has been led by the PRIDE team since its establishment in 2024. WCC has successfully implemented the combination of ultra-rapid, rapid, and final multi-GNSS products, including precise satellite orbits, clocks, and biases for GPS, GLONASS, and Galileo. These combined products are released operationally on a daily basis through the WCC data service. A key feature of the products is their continuity across day boundaries, which is particularly beneficial for applications such as time transfer and multi-day kinematic positioning. Building upon the team's extensive experience in GNSS product combination, the WCC is also leading the development of a standardized format for combination statistics and metadata. A Version 0.1 draft specification and its accompanying documentation have been completed, and the full standardization effort is expected to be finalized by the end of 2026.