4 papers
An Approximately 70-Year Core-Related Modulation of Earth Rotation and Its Implications for the Leap Second
Zewen Zhang, Yuanwei Wu, Xishun Li +4
Recent observations of Universal Time (UT1) indicate an acceleration in Earth's rotation. If sustained under the current leap-second framework, this behavior could eventually promp…
Accuracy Analysis of VLBI Universal Time Measurement Based on a GNSS Single-Station Regional Ionospheric Model
Xu-chong Duan, Dang Yao, Yuan-wei Wu +3
Universal Time (UT1) is a key parameter characterizing Earth's rotation, and very long baseline interferometry (VLBI) is the mainstream technique for measuring UT1. To address the…
Prediction of Celestial Pole Offsets Based on Sliding Window and Bivariate Least Squares Fitting
Wang Wei-long, Wu Yuan-wei, Li Xi-shun +4
As an important component of Earth Orientation Parameters (EOP), the prediction of Celestial Pole Offsets (CPO) holds significant importance for missions such as deep space explora…
GASV: A New VLBI analysis software for Geodesy and Astrometry
Dang Yao, Yuan-wei Wu, Xu-hai Yang
We present GASV, a novel Python-based software package specifically designed for the analysis of Very Long Baseline Interferometry (VLBI) data. Developed with ease of installation…