<
>
<
>
2025 Dec 1, Dr. Cheng Quanrun successfully defended his doctoral dissertation titled "Research on GNSS Real-Time Precise Positioning Optimization Algorithms."(2025年12月1日，程泉润博士题为“GNSS实时精密定位优化算法研究”的学位论文顺利通过博士论文答辩。)
2025 Nov 14, Group member Weijie Tan has been selected for the 2025 "Shanghai KeYan Return Program".（2025年11月14日，团队成员谭伟杰成功入选2025年度上海市“科妍回归计划”。）
2025 July 19 - 20, Prof. Junping Chen, as the President of the Association of Chinese Professionals in Global Positioning Systems , organized and held this forum, and delivered a speech at the opening ceremony. In addition, group member Yize Zhang and Dr. Junsheng Ding from the team gave reports entitled Rapid Ionospheric Products and Ionospheric Stochastic Models of Shanghai Astronomical Observatory and GNSS Tropospheric Delay Prediction Platform Based on Artificial Intelligence respectively.（2025年7月19日至20日，陈俊平研究员作为全球华人导航定位协会主席，组织召开了本次论坛，并在开幕式上发表致辞。此外，团队张益泽老师、丁君生博士分别作了题为《上海天文台快速电离层产品及电离层随机模型》及《基于人工智能的GNSS对流层延迟预测平台》的报告。）
The SHABDS team participated in the "2025 Comprehensive Academic Annual Conference on Geodesy and Navigation" held in Qingdao, Shandong Province. Four team members delivered presentations: Weijie Tan presented "Research on Crustal Periodic Deformation and Data Processing Based on GNSS Observations"; Bin Wang presented "Geodetic Studies Based on BeiDou Precision Time-Frequency Transfer"; Chenglong Zhang introduced research on GNSS multi-antenna attitude determination performance evaluation in a parallel session; and Ruyuan Wang presented "Low Earth Orbit Satellites Augmented BeiDou Reference Frame" at the Doctoral Academic Forum. The conference took place from May 17 to 18, 2025.（2025年5月17日至18日，SHABDS团队参加了在山东青岛举办的"大地测量与导航2025综合学术年会"。团队四位成员分别作出学术报告：谭伟杰老师作《基于GNSS观测的地壳周期性形变和数据处理研究》报告，王彬老师作《基于北斗精密时频传递的大地测量学研究》报告，张成龙博士在分会场介绍GNSS多天线测姿性能评估研究，王茹圆博士在博士论坛作"低轨卫星联合北斗增强参考框架"主题报告。）
Prof. Junping Chen was honored with the title of "Shanghai Municipal Advanced Worker" on May 9, 2025.（陈俊平研究员于2025年5月9日获颁"上海市先进工作者"荣誉称号。）
SHABDS team members won a special award in the university category of the 2025 Space-Time Intelligent LEO Satellite Application Innovation Competition.（SHABDS团队在“2025时空智联低轨卫星应用创意大赛”中斩获高校组单项奖。）
Prof. Junping Chen serves as the president of the International Association of Chinese Professionals in Global Navigation Satellite Systems (CPGNSS), starting from Jan. 2025
2024 Nov 8-10, Ph.D. students Ruyuan Wang, Hongyu Zhu, and Siyi Xu each gave a presentation at the National Doctoral Student Academic Forum (Surveying and Mapping Science and Technology)((全国博士生学术论坛（测绘科学与技术）), held in Zhuhai, China.
Shanghai Astronomical Observatory (SHAO) has long history in research of Astronomy and Geodesy. The Center for Astro-geodynamics Research (UCAR) engages in measurement and analysis of the motion of the Earth and underlying dynamical mechanisms using the modern space techniques, including space Geodesy and astronomy. We operate a core site (SHAO) with co-location of VLBI,SLR and GNSS equipments in the supporting the GGOS geodetic core network. We maintained the analysis centers for VLBI, SLR and GNSS.
SHAO hosts the Central Bureau of the Asia-Pacific Space Geodynamics (APSG) program, which unites all relevant activities in the Asia-Pacific region into a cooperative research project in plate tectonic, crustal motion and deformation, and sea level changes.
SHAO is the current one of collaborative coordinators in the establishment of the Crustal Movement Observation Network of China (CMONOC), which includes ~260 GNSS fiducial sites and ~2000 GNSS campaign sites.
The Group of GNSS Data Analysis and Applications at SHAO was established early 2011. Routine GNSS data analysis using global GNSS network together the CMONOC network has been established since then. The products have been utilized and acknowledged in many key space programs of China.
Our main activities are:
The GNSS data analysis at SHA is the
integrated GNSS solution [Presentation at IGS Bias Workshop 2012] with products presented in the same ITRF reference frames. All satellite clocks are in the same defined time frame as GPS with a sampling of 30 seconds. Time offsets among GNSS systems are monitored.A citation is acknowledged when using the SHA products in your research and applications:
Junping Chen, Bin Wu, Xiaogong Hu, et al. (2012), SHA: the GNSS Analysis Center at SHAO, in Lecture Notes in Electrical Engineering, v 160 LNEE, p 213-221, 2012, Proceedings - 3rd China Satellite Navigation Conference, CSNC 2012
Junping Chen, Yize Zhang, Xuhua Zhou, et al. GNSS Clock Corrections Densification at SHAO: from 5 minutes to 30 seconds. SCIENCE CHINA Physics, Mechanics & Astronomy,57(1),pp.166-175,2014.
30 Mar. 2019, originator Prof.
Junping Chen